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SOUTH CAROLINA

2021 ANNUAL REPORT

U.S. Department ofTransportation 

Federal Highway Administration 

HIGHWAY SAFETY 

IMPROVEMENT PROGRAM 

Photo source: Federal Highway Administration
2021 South Carolina Highway Safety Improvement Program

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Table of Contents

Disclaimer ............................................................................................................................................. 3

Protection of Data from Discovery Admission into Evidence............................................................. 3

Executive Summary .............................................................................................................................. 4

Introduction ........................................................................................................................................... 5

Program Structure................................................................................................................................. 5

Program Administration..................................................................................................................... 5

Program Methodology ....................................................................................................................... 7

Project Implementation .......................................................................................................................16

Funds Programmed.........................................................................................................................16

General Listing of Projects ..............................................................................................................18

Safety Performance ............................................................................................................................29

General Highway Safety Trends......................................................................................................29

Safety Performance Targets............................................................................................................34

Applicability of Special Rules...........................................................................................................36

Evaluation ...........................................................................................................................................38

Program Effectiveness ....................................................................................................................38

Effectiveness of Groupings or Similar Types of Improvements .......................................................38

Project Effectiveness.......................................................................................................................42

Compliance Assessment ....................................................................................................................46

Optional Attachments..........................................................................................................................49

Glossary..............................................................................................................................................50
2021 South Carolina Highway Safety Improvement Program

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Disclaimer

Protection of Data from Discovery Admission into Evidence

23 U.S.C. 148(h)(4) states “Notwithstanding any other provision of law, reports, surveys, schedules, lists, or 

data compiled or collected for any purpose relating to this section[HSIP], shall not be subject to discovery or 

admitted into evidence in a Federal or State court proceeding or considered for other purposes in any action 

for damages arising from any occurrence at a location identified or addressed in the reports, surveys, 

schedules, lists, or other data.

23 U.S.C. 148(h)(4) states “Notwithstanding any other provision of law, reports, surveys, schedules, lists, or 

data compiled or collected for any purpose relating to this section[HSIP], shall not be subject to discovery or 

admitted into evidence in a Federal or State court proceeding or considered for other purposes in any action 

for damages arising from any occurrence at a location identified or addressed in the reports, surveys, 

schedules, lists, or other data.23 U.S.C. 409 states “Notwithstanding any other provision of law, reports, 

surveys, schedules, lists, or data compiled or collected for the purpose of identifying, evaluating, or planning 

the safety enhancement of potential accident sites, hazardous roadway conditions, or railway-highway 

crossings, pursuant to sections 130, 144, and 148 of this title or for the purpose of developing any highway 

safety construction improvement project which may be implemented utilizing Federal-aid highway funds shall 

not be subject to discovery or admitted into evidence in a Federal or State court proceeding or considered for 

other purposes in any action for damages arising from any occurrence at a location mentioned or addressed in 

such reports, surveys, schedules, lists, or data.”
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Executive Summary

In 2005, the Safe, Accountable, Flexible, and Efficient Transportation Equity Act: A Legacy for Users 

(SAFETEA-LU) established the Highway Safety Improvement Program as a core Federal-aid program with the 

goal of achieving a signification reduction in fatalities and serious injuries on all public roads under Section 

148, Title 23 of the United States Code (23 USC 148). The program has continued through the enactment of 

the Moving Ahead for Progress in the 21st Century Act (MAP-21) in 2012 and the Fixing America's Surface 

Transportation Act (FAST Act) in 2015.

The Highway Safety Improvement Program (HSIP) emphasizes a data-driven, performance-based strategic 

approach to improving highway safety, through the development and implementation of a Strategic Highway 

Safety Plan (SHSP), a comprehensive plan that establishes statewide highway safety goals, objectives, and 

key emphasis areas intended to drive HSIP investment decisions.

This report provides an overview of SCDOT's administration of the Highway Safety Improvement Program 

(HSIP). SCDOT's HSIP has a primary focus on state-maintained roads since nearly 93 percent of fatal crashes 

and the vast majority of severe crashes occur on the state system. This report covers funding obligations from 

January 1, 2020 to December 31, 2020
2021 South Carolina Highway Safety Improvement Program

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Introduction

The Highway Safety Improvement Program (HSIP) is a core Federal-aid program with the purpose of achieving 

a significant reduction in fatalities and serious injuries on all public roads. As per 23 U.S.C. 148(h) and 23 CFR 

924.15, States are required to report annually on the progress being made to advance HSIP implementation 

and evaluation efforts. The format of this report is consistent with the HSIP Reporting Guidance dated 

December 29, 2016 and consists of five sections: program structure, progress in implementing highway safety 

improvement projects, progress in achieving safety outcomes and performance targets, effectiveness of the 

improvements and compliance assessment.

Program Structure

Program Administration

Describe the general structure of the HSIP in the State. 

The Highway Safety Improvement Program is implemented through the Traffic Engineering-Traffic Safety 

Office. This office is composed of five groups: Highway Safety Improvement Program, Railroad/Research, 

Safety Program Administration, Safety Project Development, and Strategic Highway Safety Plan/Special 

Projects. The HSIP group is responsible for all aspects of the HSIP process: planning, implementation, and 

evaluation.

HSIP funding is currently allocated to align with crash categories and emphasis areas from the Strategic 

Highway Safety Plan (SHSP). The funding for these Emphasis area is as follows with some overlap between 

categories: 

• Roadway Departure ($20 Million)

o Interstate Safety Program ($11M) 

o Rumble Strip Program ($9M) 

• Intersections and Other High Risk Locations ($18 Million)

o Intersection Safety Program ($13M) 

o Road Safety Assessments Program ($5M) 

• Non-Motorized Users ($5 Milliion) 

Where is HSIP staff located within the State DOT? 

 Engineering

How are HSIP funds allocated in a State? 

• Other-Central Office through Statewide Screening Process

Describe how local and tribal roads are addressed as part of HSIP.

In South Carolina, the vast majority (~93%) of fatal crashes occur on state-maintained roadways. Due to this 

statistic, our primary focus for safety has been on state-maintained roadways. However, we have some 

intersection improvement projects where a local road intersects with a state-owned road. Additionally, as our 

crash data is improving in accessibility and completeness, local roads are being incorporated into our Road 

Inventory Management System (RIMS) for analysis. 
2021 South Carolina Highway Safety Improvement Program

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It is also worth noting that South Carolina maintains the fourth largest highway system in the nation at nearly 

41,400 center-line miles of roadway, despite a land area of roughly 32,000 square miles.

Identify which internal partners (e.g., State departments of transportation (DOTs) 

Bureaus, Divisions) are involved with HSIP planning.

• Design

• Districts/Regions

• Local Aid Programs Office/Division

• Maintenance

• Operations

• Planning

• Traffic Engineering/Safety

Describe coordination with internal partners.

Several partners within SCDOT and consultants are involved thoughout the process of HSIP planning. Many of 

our safety improvements are designed by our Safety Project group within Traffic Engineering and they are 

involved with project design or oversight on all projects to ensure proper designs. Consultant led designs are 

reviewed and approved by internal staff. Our Planning office is consulted during the selection process to 

determine if any qualifying projects have been identified for improvements through other funding sources such 

as the Metropolitan Planning Organizations (MPOs) or Council of Governments (COGs). Our Maintenance 

office is also contacted to ensure that there are no conflicting maintenance activities such as resurfacing or 

pavement marking contracts that involve overlapping work. Operations are monitored through other Traffic 

Engineering offices or consultants to ensure that all projects include consideration of proper traffic operations 

by conducting traffic volume counts, Synchro analysis, signal operations, etc. 

Identify which external partners are involved with HSIP planning.

• FHWA

• Governors Highway Safety Office

• Law Enforcement Agency

• Local Government Agency 

• Regional Planning Organizations (e.g. MPOs, RPOs, COGs)

Describe coordination with external partners.

SCDOT has a long history of working with external partners to further the Target Zero mission in the state. 

Perhaps the closest relationship exists between SCDOT and the South Carolina Department of Public Safety 

(SCDPS). In the past year, SCDOT was involved in a new data driven enforcement initiative led by SCDPS 

using crash data located on SCDOT’s line work to identify locations in the state with the greatest potential to 

reduce collisions related to DUI, speed, and unbelted occupants.

SCDOT and SCDPS also worked together to update the state’s Strategic Highway Safety Plan (SHSP) in 

2020. The SHSP was shared with a number of additional partners for input before it was finalized. These 

partners included, but were not limited to, the SC Department of Motor Vehicles, the SC Department of Health 

and Environmental Control, the Traffic Records Coordinating Committee, the Motorcycle Safety Task Force, 

the Impaired Driving Prevention Council, and the Palmetto Cycling Coalition.
2021 South Carolina Highway Safety Improvement Program

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The SCDOT Traffic Engineering Safety Office provides collision data to MPOs and COGs on a regular basis. In 

the past year, the office has received many requests for evaluating crash data and performing Highway Safety 

Manual analysis on specific locations.

The SCDOT Traffic Engineering Safety Office provides information related to the statewide safety performance 

targets to all MPOs and COGs, and includes baseline data for every study area. Representatives from the 

Traffic Safety Office attend MPO and COG meetings as requested to share collision data and crash type 

analysis. Additionally, through the Department’s new Feasibility Report process, the Traffic Safety Office is 

involved at the beginning stages of project development to ensure safety improvements are included in all 

projects, including MPO and COG projects.

SCDOT is currently developing a statewide Pedestrian and Bicycle Safety Action Plan (PBSAP). A steering 

committee was formed to assist the team in developing a comprehensive plan that included input from a 

variety of external partners.

Program Methodology

Does the State have an HSIP manual or similar that clearly describes HSIP planning, 

implementation and evaluation processes?

No

SCDOT utilizes engineering directives that outline the project selection/ranking process.

Select the programs that are administered under the HSIP.

• Bicycle Safety

• Horizontal Curve

• HSIP (no subprograms)

• Intersection

• Pedestrian Safety

• Roadway Departure

• Rural State Highways

• Safe Corridor

• Shoulder Improvement

• Sign Replacement And Improvement

Program: Bicycle Safety

Date of Program Methodology:10/1/2015

What is the justification for this program? 

What is the funding approach for this program? 

What data types were used in the program methodology? 

Crashes Exposure Roadway 

What project identification methodology was used for this program? 
2021 South Carolina Highway Safety Improvement Program

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Are local roads (non-state owned and operated) included or addressed in this 

program?

Are local road projects identified using the same methodology as state roads?

How are projects under this program advanced for implementation?

Select the processes used to prioritize projects for implementation. For the methods 

selected, indicate the relative importance of each process in project prioritization. 

Enter either the weights or numerical rankings. If weights are entered, the sum must 

equal 100. If ranks are entered, indicate ties by giving both processes the same rank 

and skip the next highest rank (as an example: 1, 2, 2, 4).

Program: Horizontal Curve

Date of Program Methodology:10/1/2015

What is the justification for this program? 

What is the funding approach for this program? 

What data types were used in the program methodology? 

Crashes Exposure Roadway 

What project identification methodology was used for this program? 

Are local roads (non-state owned and operated) included or addressed in this 

program?

No

Are local road projects identified using the same methodology as state roads?

How are projects under this program advanced for implementation?

Select the processes used to prioritize projects for implementation. For the methods 

selected, indicate the relative importance of each process in project prioritization. 

Enter either the weights or numerical rankings. If weights are entered, the sum must 

equal 100. If ranks are entered, indicate ties by giving both processes the same rank 

and skip the next highest rank (as an example: 1, 2, 2, 4).

Program: HSIP (no subprograms)

Date of Program Methodology:10/1/2015
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What is the justification for this program? 

• Addresses SHSP priority or emphasis area

• FHWA focused approach to safety

What is the funding approach for this program? 

Funding set-aside

What data types were used in the program methodology? 

Crashes Exposure Roadway 

• All crashes

• Fatal crashes only

• Fatal and serious injury crashes 

only

• Traffic

• Volume

• Lane miles

• Median width

• Horizontal curvature

• Functional classification

• Roadside features

What project identification methodology was used for this program? 

• Crash frequency

• Crash rate

• Excess expected crash frequency using SPFs

• Relative severity index

Are local roads (non-state owned and operated) included or addressed in this 

program?

Yes

Are local road projects identified using the same methodology as state roads?

Yes

How are projects under this program advanced for implementation?

• selection committee

Select the processes used to prioritize projects for implementation. For the methods 

selected, indicate the relative importance of each process in project prioritization. 

Enter either the weights or numerical rankings. If weights are entered, the sum must 

equal 100. If ranks are entered, indicate ties by giving both processes the same rank 

and skip the next highest rank (as an example: 1, 2, 2, 4).

Rank of Priority Consideration

Ranking based on B/C:3

Available funding:2

Ranking based on net benefit:3

Cost Effectiveness:1
2021 South Carolina Highway Safety Improvement Program

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Program: Intersection

Date of Program Methodology:10/1/2015

What is the justification for this program? 

What is the funding approach for this program? 

What data types were used in the program methodology? 

Crashes Exposure Roadway 

What project identification methodology was used for this program? 

Are local roads (non-state owned and operated) included or addressed in this 

program?

Are local road projects identified using the same methodology as state roads?

How are projects under this program advanced for implementation?

Select the processes used to prioritize projects for implementation. For the methods 

selected, indicate the relative importance of each process in project prioritization. 

Enter either the weights or numerical rankings. If weights are entered, the sum must 

equal 100. If ranks are entered, indicate ties by giving both processes the same rank 

and skip the next highest rank (as an example: 1, 2, 2, 4).

Program: Pedestrian Safety

Date of Program Methodology:10/1/2015

What is the justification for this program? 

What is the funding approach for this program? 

What data types were used in the program methodology? 

Crashes Exposure Roadway 

What project identification methodology was used for this program? 

Are local roads (non-state owned and operated) included or addressed in this 

program?
2021 South Carolina Highway Safety Improvement Program

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Are local road projects identified using the same methodology as state roads?

How are projects under this program advanced for implementation?

Select the processes used to prioritize projects for implementation. For the methods 

selected, indicate the relative importance of each process in project prioritization. 

Enter either the weights or numerical rankings. If weights are entered, the sum must 

equal 100. If ranks are entered, indicate ties by giving both processes the same rank 

and skip the next highest rank (as an example: 1, 2, 2, 4).

Program: Roadway Departure

Date of Program Methodology:10/1/2015

What is the justification for this program? 

What is the funding approach for this program? 

What data types were used in the program methodology? 

Crashes Exposure Roadway 

What project identification methodology was used for this program? 

Are local roads (non-state owned and operated) included or addressed in this 

program?

Are local road projects identified using the same methodology as state roads?

How are projects under this program advanced for implementation?

Select the processes used to prioritize projects for implementation. For the methods 

selected, indicate the relative importance of each process in project prioritization. 

Enter either the weights or numerical rankings. If weights are entered, the sum must 

equal 100. If ranks are entered, indicate ties by giving both processes the same rank 

and skip the next highest rank (as an example: 1, 2, 2, 4).

Program: Rural State Highways

Date of Program Methodology:10/1/2015

What is the justification for this program? 

What is the funding approach for this program? 
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What data types were used in the program methodology? 

Crashes Exposure Roadway 

What project identification methodology was used for this program? 

Are local roads (non-state owned and operated) included or addressed in this 

program?

Are local road projects identified using the same methodology as state roads?

How are projects under this program advanced for implementation?

Select the processes used to prioritize projects for implementation. For the methods 

selected, indicate the relative importance of each process in project prioritization. 

Enter either the weights or numerical rankings. If weights are entered, the sum must 

equal 100. If ranks are entered, indicate ties by giving both processes the same rank 

and skip the next highest rank (as an example: 1, 2, 2, 4).

Program: Safe Corridor

Date of Program Methodology:10/1/2015

What is the justification for this program? 

What is the funding approach for this program? 

What data types were used in the program methodology? 

Crashes Exposure Roadway 

What project identification methodology was used for this program? 

Are local roads (non-state owned and operated) included or addressed in this 

program?

Are local road projects identified using the same methodology as state roads?

How are projects under this program advanced for implementation?

Select the processes used to prioritize projects for implementation. For the methods 

selected, indicate the relative importance of each process in project prioritization. 

Enter either the weights or numerical rankings. If weights are entered, the sum must 
2021 South Carolina Highway Safety Improvement Program

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equal 100. If ranks are entered, indicate ties by giving both processes the same rank 

and skip the next highest rank (as an example: 1, 2, 2, 4).

Program: Shoulder Improvement

Date of Program Methodology:10/1/2015

What is the justification for this program? 

What is the funding approach for this program? 

What data types were used in the program methodology? 

Crashes Exposure Roadway 

What project identification methodology was used for this program? 

Are local roads (non-state owned and operated) included or addressed in this 

program?

Are local road projects identified using the same methodology as state roads?

How are projects under this program advanced for implementation?

Select the processes used to prioritize projects for implementation. For the methods 

selected, indicate the relative importance of each process in project prioritization. 

Enter either the weights or numerical rankings. If weights are entered, the sum must 

equal 100. If ranks are entered, indicate ties by giving both processes the same rank 

and skip the next highest rank (as an example: 1, 2, 2, 4).

Program: Sign Replacement And Improvement

Date of Program Methodology:10/1/2015

What is the justification for this program? 

What is the funding approach for this program? 

What data types were used in the program methodology? 

Crashes Exposure Roadway 

What project identification methodology was used for this program? 
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Are local roads (non-state owned and operated) included or addressed in this 

program?

Are local road projects identified using the same methodology as state roads?

How are projects under this program advanced for implementation?

Select the processes used to prioritize projects for implementation. For the methods 

selected, indicate the relative importance of each process in project prioritization. 

Enter either the weights or numerical rankings. If weights are entered, the sum must 

equal 100. If ranks are entered, indicate ties by giving both processes the same rank 

and skip the next highest rank (as an example: 1, 2, 2, 4).

What percentage of HSIP funds address systemic improvements?

 33

 HSIP funds are used to address which of the following systemic 

improvements? 

• Add/Upgrade/Modify/Remove Traffic Signal

• Cable Median Barriers

• Clear Zone Improvements

• High friction surface treatment

• Horizontal curve signs

• Install/Improve Lighting

• Install/Improve Pavement Marking and/or Delineation

• Install/Improve Signing

• Pavement/Shoulder Widening

• Rumble Strips

• Safety Edge

Install/Improve Lighting - this category is being evaluated as part of the RSA process for potential 

implementation.

What process is used to identify potential countermeasures? 

• Crash data analysis

• Data-driven safety analysis tools (HSM, CMF Clearinghouse, SafetyAnalyst, usRAP)

• Engineering Study

• Road Safety Assessment

• Stakeholder input

Does the State HSIP consider connected vehicles and ITS technologies? 

No

Does the State use the Highway Safety Manual to support HSIP efforts?

Yes 
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Please describe how the State uses the HSM to support HSIP efforts.

Predictive and alternative Analysis for select projects.
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Project Implementation

Funds Programmed

Reporting period for HSIP funding.

Calendar Year

Enter the programmed and obligated funding for each applicable funding category.

FUNDING CATEGORY PROGRAMMED OBLIGATED % 

OBLIGATED/PROGRAMMED

HSIP (23 U.S.C. 148) $55,255,020 $56,160,919 101.64%

HRRR Special Rule (23 

U.S.C. 148(g)(1))

$0 $0 0%

Penalty Funds (23 U.S.C. 

154)

$0 $0 0%

Penalty Funds (23 U.S.C. 

164)

$0 $14,569,723 0%

RHCP (for HSIP 

purposes) (23 U.S.C. 

130(e)(2))

$0 $0 0%

Other Federal-aid Funds 

(i.e. STBG, NHPP)

$0 $5,245,742 0%

State and Local Funds $54,158,980 $40,472,662 74.73%

Totals $109,414,000 $116,449,046 106.43%

How much funding is programmed to local (non-state owned and operated) or tribal 

safety projects?

0%

How much funding is obligated to local or tribal safety projects?

0%

How much funding is programmed to non-infrastructure safety projects?

0%

How much funding is obligated to non-infrastructure safety projects?

0%

How much funding was transferred in to the HSIP from other core program areas 

during the reporting period under 23 U.S.C. 126?

0%
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How much funding was transferred out of the HSIP to other core program areas during 

the reporting period under 23 U.S.C. 126?

0%

Discuss impediments to obligating HSIP funds and plans to overcome this challenge in 

the future.

None
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General Listing of Projects

List the projects obligated using HSIP funds for the reporting period.

PROJECT NAME IMPROVEMENT 

CATEGORY SUBCATEGORY OUTPUTS OUTPUT TYPE

HSIP 

PROJECT 

COST($)

TOTAL 

PROJECT 

COST($)

FUNDING 

CATEGORY

LAND 

USE/AREA 

TYPE

FUNCTIONAL 

CLASSIFICATION AADT SPEED OWNERSHIP

METHOD 

FOR SITE 

SELECTION

SHSP 

EMPHASIS 

AREA

SHSP 

STRATEGY

Batesville Rd (S164) (SC 14 to 

Roper Mountain 

Road)

Roadway Roadway - other $1575000 $1750000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Systemic Roadway 

Departure

SC 6 with S-156 

(Dreher Shoals 

Road)

Intersection 

geometry

Innovative 

Intersection (e.g. 

MUT, RCUT, QR)

$268413.24 $298236.78 HSIP (23 

U.S.C. 148)

Rural Local Road or 

Street

0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - S28 (Camp Rd) With 

S-53 (Riverland)

Intersection 

geometry

Intersection 

geometry - other

$353613.8 $353613.8 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - SC 

151 Bus. @ S-102 & 

S-10 & S-1040

Intersection 

geometry

Intersection 

geometry - other

$174765.67 $174765.67 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections

Roper Mountain 

Road (S-548) -

Roper Mountain Rd. 

Extension (S-547) 

to Garlington Rd.

Intersection 

geometry

Intersection 

geometry - other

$900000 $1000000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther Freeways & 

Expressways

0 State 

Highway 

Agency

Spot Intersections

US 21/S-52 

Intersection 

Improvement

Intersection 

geometry

Intersection 

geometry - other

$31111.55 $34568.29 HSIP (23 

U.S.C. 148)

Urban Major Collector 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - SC 

9 (Pageland Hwy) at 

S-36 (Potter Rd)

Intersection 

geometry

Intersection 

geometry - other

$101306.55 $112562.83 HSIP (23 

U.S.C. 148)

Rural Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections

SC 146 @ SC 417 Intersection 

geometry

Intersection 

geometry - other

$19463.64 $19463.64 HSIP (23 

U.S.C. 148)

Rural Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections

SC 146 @ SC 417 Intersection 

geometry

Intersection 

geometry - other

$20413.25 $20413.25 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - S145 (Pine Log) at S65 (Storm Branch)

Intersection 

geometry

Intersection 

geometry - other

$226476.89 $226476.89 HSIP (23 

U.S.C. 148)

Multiple/Varies Multiple/Varies 0 State 

Highway 

Agency

Systemic Intersections

S- 197 INTERSEC. 

IMPROVEMENT

Intersection 

geometry

Intersection 

geometry - other

$85070.83 $94523.14 HSIP (23 

U.S.C. 148)

Rural Major Collector 0 State 

Highway 

Agency

Spot Intersections
2021 South Carolina Highway Safety Improvement Program

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PROJECT NAME IMPROVEMENT 

CATEGORY SUBCATEGORY OUTPUTS OUTPUT TYPE

HSIP 

PROJECT 

COST($)

TOTAL 

PROJECT 

COST($)

FUNDING 

CATEGORY

LAND 

USE/AREA 

TYPE

FUNCTIONAL 

CLASSIFICATION AADT SPEED OWNERSHIP

METHOD 

FOR SITE 

SELECTION

SHSP 

EMPHASIS 

AREA

SHSP 

STRATEGY

US 17A @ S-1258 Intersection 

geometry

Intersection 

geometry - other

$180 $200 HSIP (23 

U.S.C. 148)

Rural Major Collector 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - US 

17A & S-48 

(Bethera Rd) & S-97 

(Cane Gully Rd) & 

S-40 (Harristown 

Rd)

Intersection 

geometry

Intersection 

geometry - other

$1354584.73 $1505094.14 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Spot Roadway 

Departure

S- 82 INTERSEC. 

IMPROVEMENT

Intersection 

geometry

Intersection 

geometry - other

$67000 $67000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections

SC 261 OTHER Roadway Roadway - other $4248.43 $4720.51 HSIP (23 

U.S.C. 148)

Urban Major Collector 0 State 

Highway 

Agency

Spot Roadway 

Departure

Intersection 

Improvement – SC 

6 (S. Lake Dr) and 

S-627 (Bethany 

Church 

Road/Pleasant View 

Drive)

Intersection 

geometry

Intersection 

geometry - other

$35329.36 $39254.77 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - SC 

292 at S-77

Intersection 

geometry

Intersection 

geometry - other

$3317.64 $3686.25 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - S34 (Whitehall Rd) & 

Sullivan Rd

Intersection 

geometry

Intersection 

geometry - other

$41400 $46000 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - SC 

9 at Foster Rd

Intersection 

geometry

Intersection 

geometry - other

$28823.39 $28823.39 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - S63 (Alpine Rd) & S1026 (Old Percival 

Rd)

Intersection 

geometry

Intersection 

geometry - other

$1677189.06 $1677189.06 HSIP (23 

U.S.C. 148)

Rural Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections

S-60 (Wire Rd) Roadway Roadway - other $616297.55 $616297.55 HSIP (23 

U.S.C. 148)

Urban Major Collector 0 State 

Highway 

Agency

Systemic Roadway 

Departure

Statewide 

Section/Corridor 

Improvements - SRoadway Roadway - other $1697.77 $1886.41 HSIP (23 

U.S.C. 148)

Multiple/Varies Minor Arterial 0 State 

Highway 

Agency

Systemic Roadway 

Departure
2021 South Carolina Highway Safety Improvement Program

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PROJECT NAME IMPROVEMENT 

CATEGORY SUBCATEGORY OUTPUTS OUTPUT TYPE

HSIP 

PROJECT 

COST($)

TOTAL 

PROJECT 

COST($)

FUNDING 

CATEGORY

LAND 

USE/AREA 

TYPE

FUNCTIONAL 

CLASSIFICATION AADT SPEED OWNERSHIP

METHOD 

FOR SITE 

SELECTION

SHSP 

EMPHASIS 

AREA

SHSP 

STRATEGY

51 (Amicks Ferry 

Rd)

S-627 (Pleasant 

View Dr/ Redmond 

Rd/ Fal

Roadway Roadway - other $263000.84 $263000.84 HSIP (23 

U.S.C. 148)

Multiple/Varies Minor Arterial 0 State 

Highway 

Agency

Systemic Roadway 

Departure

Statewide 

Section/Corridor 

Improvements - S187 (Bethel Road)

Roadway Roadway - other $4992.42 $5547.15 HSIP (23 

U.S.C. 148)

Urban Principal ArterialInterstate0 State 

Highway 

Agency

Systemic Roadway 

Departure

S-347 (John Everall 

Rd)

Roadway Roadway - other $250008.15 $277786.81 HSIP (23 

U.S.C. 148)

Rural Major Collector 0 State 

Highway 

Agency

Systemic Roadway 

Departure

S-29 (Riverside Rd) Roadway Roadway - other $667210.72 $741345.24 HSIP (23 

U.S.C. 148)

Rural Major Collector 0 State 

Highway 

Agency

Systemic Roadway 

Departure

Section/Corridor 

Improvements - SC 

70 (Binnicker Bridge 

Rd)

Roadway Roadway - other $57873.67 $64304.08 HSIP (23 

U.S.C. 148)

Rural Major Collector 0 State 

Highway 

Agency

Systemic Roadway 

Departure

Median 

Improvements

Roadway Roadway - other $1316676.29 $1462973.66 HSIP (23 

U.S.C. 148)

Multiple/Varies Multiple/Varies 0 State 

Highway 

Agency

Systemic Roadway 

Departure

Signalize and 

construct left turn 

lanes on S-204 

(Pisgah 

Church/Long Pond) 

and S-77 (Barr 

Road)

Intersection 

geometry

Add/modify 

auxiliary lanes

$90000 $100000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Systemic Roadway 

Departure

Intersection 

Improvements - US 

29 @ US 29 Bus & 

S-232

Intersection 

geometry

Intersection 

geometry - other

$1212089.2 $1346765.77 HSIP (23 

U.S.C. 148)

Multiple/Varies Multiple/Varies 0 State 

Highway 

Agency

Systemic Intersections

Intersection 

Improvements - US 

52 (N. Governor 

Williams Hwy) at S528 (Wire Rd)

Intersection 

geometry

Intersection 

geometry - other

$1236674.97 $1374083.3 HSIP (23 

U.S.C. 148)

Urban Minor Collector 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - US 

17 Byp at Tadlock 

Dr. Murrells 

Inlet/Garden City 

(unincorporated)

Intersection 

geometry

Intersection 

geometry - other

$15918.35 $17687.05 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections
2021 South Carolina Highway Safety Improvement Program

Page 21 of 50

PROJECT NAME IMPROVEMENT 

CATEGORY SUBCATEGORY OUTPUTS OUTPUT TYPE

HSIP 

PROJECT 

COST($)

TOTAL 

PROJECT 

COST($)

FUNDING 

CATEGORY

LAND 

USE/AREA 

TYPE

FUNCTIONAL 

CLASSIFICATION AADT SPEED OWNERSHIP

METHOD 

FOR SITE 

SELECTION

SHSP 

EMPHASIS 

AREA

SHSP 

STRATEGY

Intersection 

Improvements - US 

501 at S-1315 

(Robert M. Grissom 

Pkwy)

Intersection 

geometry

Intersection 

geometry - other

$2942195.87 $3269106.53 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - US 

521 (Charlotte Hwy) 

& S-755 (North 

Corner Road)

Intersection 

geometry

Intersection 

geometry - other

$1317648.52 $1464053.91 HSIP (23 

U.S.C. 148)

Urban Major Collector 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - US 

76 at S-64 (Laughlin 

Rd/Moores Mill 

Rd)/S-328 

(Springville Rd)

Intersection 

geometry

Intersection 

geometry - other

$1768774.52 $1965305.03 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 0 State 

Highway 

Agency

Spot Intersections

Ford Elementary 

Safe Routes to 

School

Intersection 

geometry

Intersection 

geometry - other

$4083.71 $4083.71 HSIP (23 

U.S.C. 148)

N/A N/A 0 State 

Highway 

Agency

Systemic school safety

Intersection 

Improvements - US 

301 (Five Chop Rd) 

at SC 267 (Tee Vee 

Rd)

Intersection 

geometry

Intersection 

geometry - other

$787500 $875000 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 0 State 

Highway 

Agency

Spot school safety

S-356 (Starline 

Drive)

Roadway Roadway - other $41771.56 $46412.85 HSIP (23 

U.S.C. 148)

Urban Major Collector 0 State 

Highway 

Agency

Systemic Roadway 

Departure

Intersection 

Improvements - S485 (Old Cherokee) 

and S-408 (Pilgrim 

Church Rd)

Intersection 

geometry

Intersection 

geometry - other

$18408.6 $20454 HSIP (23 

U.S.C. 148)

Urban Minor Collector 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvement - US 1 

(Jefferson Davis 

Hwy) @ SC 118 

(Hitchcock 

Pkwy/Robert M. Bell 

Pkwy)

Intersection 

geometry

Intersection 

geometry - other

$27862.84 $30958.71 HSIP (23 

U.S.C. 148)

Rural Major Collector 0 State 

Highway 

Agency

Systemic Roadway 

Departure

Statewide Interstate 

Safety - I-95 MP 

0.00 to MP 33.90

Roadway Roadway - other $720103.97 $800115.44 HSIP (23 

U.S.C. 148)

Urban Principal ArterialInterstate0 State 

Highway 

Agency

Spot Roadway 

Departure

I-26 Cable Guardrail 

Project (from near 

MM 168 to near MM 

199) (Phase II)

Roadway Roadway - other $8090003.64 $8988892.93 HSIP (23 

U.S.C. 148)

Urban Principal ArterialInterstate0 State 

Highway 

Agency

Systemic Roadway 

Departure
2021 South Carolina Highway Safety Improvement Program

Page 22 of 50

PROJECT NAME IMPROVEMENT 

CATEGORY SUBCATEGORY OUTPUTS OUTPUT TYPE

HSIP 

PROJECT 

COST($)

TOTAL 

PROJECT 

COST($)

FUNDING 

CATEGORY

LAND 

USE/AREA 

TYPE

FUNCTIONAL 

CLASSIFICATION AADT SPEED OWNERSHIP

METHOD 

FOR SITE 

SELECTION

SHSP 

EMPHASIS 

AREA

SHSP 

STRATEGY

Section/Corridor 

Improvements – SC 

153 east and west of 

the SC 81 

Intersection

Roadway Roadway - other $11729.65 $13032.87 HSIP (23 

U.S.C. 148)

Urban Major Collector 0 State 

Highway 

Agency

Systemic Roadway 

Departure

Intersection 

Improvements - US 

29 (Highway 29 

N)and S-904 (Snow 

Rd)

Intersection 

geometry

Intersection 

geometry - other

$1180048.86 $1311165.4 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - US 

178 (Liberty 

Highway) and SC 

88 (Old Greenville 

Highway)

Intersection 

geometry

Intersection 

geometry - other

$1850555.04 $1853055.04 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - US 

301 (N Jones Rd) 

and SC 403 (N 

Bethel Rd)

Intersection 

geometry

Intersection 

geometry - other

$1792384.87 $1792384.87 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - SC 

702 (Hwy 702) and 

SC 246 (Hwy 246 S)

Intersection 

geometry

Intersection 

geometry - other

$1048347.84 $1164830.93 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - SC 

522 (Rocky River 

Rd) and S-123 

(Taxahaw Rd)

Intersection 

geometry

Intersection 

geometry - other

$2341491.79 $2341491.79 HSIP (23 

U.S.C. 148)

Rural Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - US 

76 and S-72 (Trinity 

Church Rd/Dial Pl)

Intersection 

geometry

Intersection 

geometry - other

$1659184.13 $1659184.13 HSIP (23 

U.S.C. 148)

Rural Major Collector 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - S73 (Fish Hatchery 

Rd) and S-719 

(Busbee Rd)

Intersection 

geometry

Intersection 

geometry - other

$1417274.43 $1417274.43 HSIP (23 

U.S.C. 148)

Rural Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - SC 

555 (Farrow Rd) 

and S-1274 (N 

Brickyard Rd)

Intersection 

geometry

Intersection 

geometry - other

$3498.3 $3887 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 0 State 

Highway 

Agency

Spot Intersections
2021 South Carolina Highway Safety Improvement Program

Page 23 of 50

PROJECT NAME IMPROVEMENT 

CATEGORY SUBCATEGORY OUTPUTS OUTPUT TYPE

HSIP 

PROJECT 

COST($)

TOTAL 

PROJECT 

COST($)

FUNDING 

CATEGORY

LAND 

USE/AREA 

TYPE

FUNCTIONAL 

CLASSIFICATION AADT SPEED OWNERSHIP

METHOD 

FOR SITE 

SELECTION

SHSP 

EMPHASIS 

AREA

SHSP 

STRATEGY

Intersection 

Improvements - US 

76 (Garners Ferry 

Rd) and SC 263 

(Vanboklen Rd)

Intersection 

geometry

Intersection 

geometry - other

$601213.08 $668014.53 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements - SC 

11 (Highway 11 W) 

and S-58 (Parris 

Ridge Rd)

Intersection 

geometry

Intersection 

geometry - other

$180417.58 $200417.58 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 0 State 

Highway 

Agency

Spot Intersections

Section/Corridor 

Improvements - S14 (West/East Billy 

Farrow Hwy) MP 

1.45 to MP 10.08

Roadway Roadway - other $356.75 $396.39 HSIP (23 

U.S.C. 148)

Urban Major Collector 0 State 

Highway 

Agency

Systemic Roadway 

Departure

Section/Corridor 

Improvements - S543 (Fairview St. 

Ext/Greenpond Rd) 

MP 1.27 to MP 4.36

Roadway Roadway - other $1026.12 $1140.11 HSIP (23 

U.S.C. 148)

Rural Minor Collector 0 State 

Highway 

Agency

Systemic Roadway 

Departure

Section/Corridor 

Improvements - US 

176 - S-728 (Old 

Monks Corner Rd) 

to US 52

Roadway Roadway - other $54202.81 $60225.34 HSIP (23 

U.S.C. 148)

Urban Major Collector 0 State 

Highway 

Agency

Spot Intersections

Section/Corridor 

Improvements - SC 

642 - S-373 (State 

Park Rd) to S-259 

(Near Parlor Dr)

Roadway Roadway - other $316890 $352100 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 0 State 

Highway 

Agency

Systemic Roadway 

Departure

Stone Academy 

Safe Routes to 

School

Miscellaneous Miscellaneous -

other

$348836.42 $348836.42 HSIP (23 

U.S.C. 148)

N/A N/A 0 State 

Highway 

Agency

Systemic school safety

Lakeview 

Elementary Safe 

Routes to School

Miscellaneous Miscellaneous -

other

$329938.13 $329938.13 HSIP (23 

U.S.C. 148)

N/A N/A 0 State 

Highway 

Agency

Systemic school safety

JP Thomas 

Elementary Safe 

Routes to School

Miscellaneous Miscellaneous -

other

$321371.82 $321371.82 HSIP (23 

U.S.C. 148)

N/A N/A 0 State 

Highway 

Agency

Systemic school safety

Rosewood 

Elementary 

International School 

- Safe Routes to 

School

Miscellaneous Miscellaneous -

other

$362244.1 $362244.1 HSIP (23 

U.S.C. 148)

N/A N/A 0 State 

Highway 

Agency

Systemic school safety
2021 South Carolina Highway Safety Improvement Program

Page 24 of 50

PROJECT NAME IMPROVEMENT 

CATEGORY SUBCATEGORY OUTPUTS OUTPUT TYPE

HSIP 

PROJECT 

COST($)

TOTAL 

PROJECT 

COST($)

FUNDING 

CATEGORY

LAND 

USE/AREA 

TYPE

FUNCTIONAL 

CLASSIFICATION AADT SPEED OWNERSHIP

METHOD 

FOR SITE 

SELECTION

SHSP 

EMPHASIS 

AREA

SHSP 

STRATEGY

Interstate Safety 

Project I-77 MP 5.20 

– MP 6.40 

Overhead Sign 

Structure with 

Weather Monitoring

Roadway signs 

and traffic 

control

Roadway signs 

and traffic control 

- other

$56000 $56000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Systemic Roadway 

Departure

RSA US 17 Bus (MP 

9.56 - 13.4)

Roadway Roadway - other $157500 $175000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Systemic Road Safety 

Audit

Safety 

Improvements/RSA 

US 29

Roadway Roadway - other $225000 $250000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Systemic Road Safety 

Audit

Safety 

Improvements/RSA 

US 78

Roadway Roadway - other $409500 $455000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Systemic Road Safety 

Audit

Safety 

Improvements/RSA 

US 17

Roadway Roadway - other $112500 $125000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Systemic Road Safety 

Audit

Safety 

Improvements/RSA 

SC 183

Roadway Roadway - other $112500 $125000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Systemic Road Safety 

Audit

Safety 

Improvements/RSA 

S-75 (Ashley 

Phosphate Rd)

Roadway Roadway - other $225000 $250000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Systemic Road Safety 

Audit

Safety 

Improvements/RSA 

US 17A

Roadway Roadway - other $489600 $544000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Systemic Road Safety 

Audit

Safety 

Improvements/RSA 

- S-215 (Mr. Joe 

White Ave)

Roadway Roadway - other $135000 $150000 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 0 State 

Highway 

Agency

Systemic Road Safety 

Audit

S-10 (Harden St) -

Bike/Ped Safety 

Project/RSA

Roadway Roadway - other $130500 $145000 HSIP (23 

U.S.C. 148)

Urban Major Collector 0 State 

Highway 

Agency

Systemic Road Safety 

Audit

S-107 (Meeting St.) 

- Bike/Ped Safety 

Improvements/RSA

Roadway Roadway - other $135000 $150000 HSIP (23 

U.S.C. 148)

Urban Major Collector 0 State 

Highway 

Agency

Systemic Road Safety 

Audit

S-104 (King St.) -

Bike/Ped Safety 

Improvements/RSA

Roadway Roadway - other $135000 $150000 HSIP (23 

U.S.C. 148)

Urban Major Collector 0 State 

Highway 

Agency

Systemic Road Safety 

Audit
2021 South Carolina Highway Safety Improvement Program

Page 25 of 50

PROJECT NAME IMPROVEMENT 

CATEGORY SUBCATEGORY OUTPUTS OUTPUT TYPE

HSIP 

PROJECT 

COST($)

TOTAL 

PROJECT 

COST($)

FUNDING 

CATEGORY

LAND 

USE/AREA 

TYPE

FUNCTIONAL 

CLASSIFICATION AADT SPEED OWNERSHIP

METHOD 

FOR SITE 

SELECTION

SHSP 

EMPHASIS 

AREA

SHSP 

STRATEGY

S-404 (Calhoun 

Street) - Bike/Ped 

Safety 

Improvements/RSA

Roadway Roadway - other $90000 $100000 HSIP (23 

U.S.C. 148)

Urban Major Collector 0 State 

Highway 

Agency

Systemic Road Safety 

Audit

S-106 (St. Philip St) 

- Bike/Ped Safety 

Improvements/RSA

Roadway Roadway - other $67500 $75000 HSIP (23 

U.S.C. 148)

Urban Major Collector 0 State 

Highway 

Agency

Systemic Road Safety 

Audit

S-241 (21st Ave N.) Roadway Roadway - other $90000 $100000 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 0 State 

Highway 

Agency

Systemic Road Safety 

Audit

US 21 (Blossom 

Street) - Bike/Ped 

Safety 

Improvements/RSA

Roadway Roadway - other $388800 $432000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Systemic Road Safety 

Audit

I-77 Safety 

Improvements MP 

60 to 91

Roadside Increase clear 

zone – tangent

$3603862.18 $4004291.31 HSIP (23 

U.S.C. 148)

Rural Principal ArterialInterstate0 State 

Highway 

Agency

Systemic Roadway 

Departure

I-26 Safety 

Improvements MP 

90 to 120

Roadside Increase clear 

zone – tangent

$43091.62 $47879.58 HSIP (23 

U.S.C. 148)

Rural Principal ArterialInterstate0 State 

Highway 

Agency

Systemic Roadway 

Departure

I-85 Safety 

Improvements MP 

30-60

Roadside Increase clear 

zone – tangent

$90000 $100000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialInterstate0 State 

Highway 

Agency

Systemic Roadway 

Departure

I-20 Safety 

Improvements MP 

60 to MP 90

Roadside Increase clear 

zone – tangent

$1538940.28 $1709933.65 HSIP (23 

U.S.C. 148)

Urban Principal ArterialInterstate0 State 

Highway 

Agency

Systemic Roadway 

Departure

2019 Rumble 

Stripes District 2

Roadway Rumble strips –

edge or shoulder

$1310899.05 $1310899.05 HSIP (23 

U.S.C. 148)

Multiple/Varies Multiple/Varies 0 State 

Highway 

Agency

Systemic Roadway 

Departure

2019 Rumble 

Stripes District 3

Roadway Rumble strips –

edge or shoulder

$1111695.88 $1111695.88 HSIP (23 

U.S.C. 148)

Multiple/Varies Multiple/Varies 0 State 

Highway 

Agency

Systemic Roadway 

Departure

2019 Rumble 

Stripes District 4

Roadway Rumble strips –

edge or shoulder

$1446236.44 $1446236.44 HSIP (23 

U.S.C. 148)

Multiple/Varies Multiple/Varies 0 State 

Highway 

Agency

Systemic Roadway 

Departure

2019 Rumble 

Stripes District 5

Roadway Rumble strips –

edge or shoulder

$927203.88 $927203.88 HSIP (23 

U.S.C. 148)

Multiple/Varies Multiple/Varies 0 State 

Highway 

Agency

Systemic Roadway 

Departure

2019 Rumble 

Stripes District 6

Roadway Rumble strips –

edge or shoulder

$661403.94 $661403.94 HSIP (23 

U.S.C. 148)

Multiple/Varies Multiple/Varies 0 State 

Highway 

Agency

Systemic Roadway 

Departure
2021 South Carolina Highway Safety Improvement Program

Page 26 of 50

PROJECT NAME IMPROVEMENT 

CATEGORY SUBCATEGORY OUTPUTS OUTPUT TYPE

HSIP 

PROJECT 

COST($)

TOTAL 

PROJECT 

COST($)

FUNDING 

CATEGORY

LAND 

USE/AREA 

TYPE

FUNCTIONAL 

CLASSIFICATION AADT SPEED OWNERSHIP

METHOD 

FOR SITE 

SELECTION

SHSP 

EMPHASIS 

AREA

SHSP 

STRATEGY

2019 Rumble 

Stripes District 7

Roadway Rumble strips –

edge or shoulder

$1319560.56 $1319560.56 HSIP (23 

U.S.C. 148)

Multiple/Varies Multiple/Varies 0 State 

Highway 

Agency

Systemic Roadway 

Departure

Flashing Yellow 

Arrow

Intersection 

traffic control

Modify traffic 

signal – add 

flashing yellow 

arrow

$500000 $500000 HSIP (23 

U.S.C. 148)

Multiple/Varies Multiple/Varies 0 State 

Highway 

Agency

Systemic Roadway 

Departure

S-54 (Paraham 

Rd)/S-80 (Campbell 

Rd)

Roadway Roadway - other $180000 $200000 HSIP (23 

U.S.C. 148)

Rural Minor Collector 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvement SC 

16/S-228

Intersection 

geometry

Intersection 

geometry - other

$45000 $50000 HSIP (23 

U.S.C. 148)

Urban Major Collector 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvement S-83 

(Old Grove Rd)/L-27 

(Bracken Rd)

Intersection 

geometry

Intersection 

geometry - other

$180000 $200000 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvement US 

401 (N Darlington 

Hwy)/SC 341

Intersection 

geometry

Intersection 

geometry - other

$180000 $200000 HSIP (23 

U.S.C. 148)

Urban Minor Collector 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvements S-76 

(Ladson Rd)/S-2421 

(College Park Rd)

Intersection 

geometry

Intersection 

geometry - other

$45000 $50000 HSIP (23 

U.S.C. 148)

Rural Minor Arterial 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvement US 21 

(Charleston Hwy)/S1258 (Old Wire Rd)

Intersection 

geometry

Intersection 

geometry - other

$180000 $200000 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvement S-908 

(Gap Creek 

Road)/L-745 (Gary 

Armstrong/Hampton 

Rd)

Intersection 

geometry

Intersection 

geometry - other

$225000 $250000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections

Intersection 

improvements at SC 

292/L-851 (Miller 

Farm Rd)

Intersection 

geometry

Intersection 

geometry - other

$180000 $200000 HSIP (23 

U.S.C. 148)

Urban Major Collector 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvement US 15 

(Jefferies Hwy)/SC 

61 (Augusta Hwy)

Intersection 

geometry

Intersection 

geometry - other

$180000 $200000 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 0 State 

Highway 

Agency

Spot Intersections
2021 South Carolina Highway Safety Improvement Program

Page 27 of 50

PROJECT NAME IMPROVEMENT 

CATEGORY SUBCATEGORY OUTPUTS OUTPUT TYPE

HSIP 

PROJECT 

COST($)

TOTAL 

PROJECT 

COST($)

FUNDING 

CATEGORY

LAND 

USE/AREA 

TYPE

FUNCTIONAL 

CLASSIFICATION AADT SPEED OWNERSHIP

METHOD 

FOR SITE 

SELECTION

SHSP 

EMPHASIS 

AREA

SHSP 

STRATEGY

Intersection 

Improvement S12/S-13

Intersection 

geometry

Intersection 

geometry - other

$45000 $50000 HSIP (23 

U.S.C. 148)

Rural Minor Arterial 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvement SC 

135 (Dacusville 

Hwy)/ S-95 

(Jameson Rd)

Intersection 

geometry

Intersection 

geometry - other

$180000 $200000 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 0 State 

Highway 

Agency

Spot Intersections

US 501/L-8968/S905Intersection 

geometry

Intersection 

geometry - other

$112500 $125000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections

Intersection 

improvement SC 81 

(Anderson Rd)/ S327 (Old Dunham 

Bridge Rd)

Intersection 

geometry

Intersection 

geometry - other

$180000 $200000 HSIP (23 

U.S.C. 148)

Rural Minor Arterial 0 State 

Highway 

Agency

Spot Intersections

Intersection 

improvement US 

29/S-96 (Welcome 

Rd)

Intersection 

geometry

Intersection 

geometry - other

$225000 $250000 HSIP (23 

U.S.C. 148)

Urban Minor Arterial 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvement US 

176 (State Rd)/S135 (Mudville Rd)

Intersection 

geometry

Intersection 

geometry - other

$112500 $125000 HSIP (23 

U.S.C. 148)

Urban Principal ArterialOther0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvement S-169 

(Von Ohsen Rd)/S881 (Lincolnville Rd)

Intersection 

geometry

Intersection 

geometry - other

$337500 $375000 HSIP (23 

U.S.C. 148)

Rural Minor Arterial 0 State 

Highway 

Agency

Spot Intersections

Intersection 

improvement SC 

34/SC 39

Intersection 

geometry

Intersection 

geometry - other

$180000 $200000 HSIP (23 

U.S.C. 148)

Urban Major Collector 0 State 

Highway 

Agency

Spot Intersections

Intersection 

Improvement US 21 

(Anderson Rd)S162(Hall Spencer 

Rd)

Intersection 

geometry

Intersection 

geometry - other

$112500 $125000 HSIP (23 

U.S.C. 148)

Rural Minor Arterial 0 State 

Highway 

Agency

Spot Intersections

Interstate Guardrail 

Project - Dist. 4

Roadside Barrier- metal $204238.99 $204238.99 HSIP (23 

U.S.C. 148)

Multiple/Varies Principal ArterialInterstate0 State 

Highway 

Agency

Systemic Roadway 

Departure

Interstate Guardrail 

Project - Dist. 5

Roadside Barrier- metal $595298.25 $595298.25 HSIP (23 

U.S.C. 148)

Multiple/Varies Principal ArterialInterstate0 State 

Highway 

Agency

Systemic Roadway 

Departure
2021 South Carolina Highway Safety Improvement Program

Page 28 of 50

PROJECT NAME IMPROVEMENT 

CATEGORY SUBCATEGORY OUTPUTS OUTPUT TYPE

HSIP 

PROJECT 

COST($)

TOTAL 

PROJECT 

COST($)

FUNDING 

CATEGORY

LAND 

USE/AREA 

TYPE

FUNCTIONAL 

CLASSIFICATION AADT SPEED OWNERSHIP

METHOD 

FOR SITE 

SELECTION

SHSP 

EMPHASIS 

AREA

SHSP 

STRATEGY

Interstate Guardrail 

Project - Dist. 6

Roadside Barrier- metal $1605908.84 $1605908.84 HSIP (23 

U.S.C. 148)

Multiple/Varies Principal ArterialInterstate0 State 

Highway 

Agency

Systemic Roadway 

Departure

Interstate Guardrail 

Project - Dist. 7

Roadside Barrier- metal $755840.63 $755840.63 HSIP (23 

U.S.C. 148)

Multiple/Varies Principal ArterialInterstate0 State 

Highway 

Agency

Systemic Roadway 

Departure

2020 Rumble 

Stripes District 1

Roadway Rumble strips –

edge or shoulder

$412584.06 $412584.06 HSIP (23 

U.S.C. 148)

Multiple/Varies Multiple/Varies 0 State 

Highway 

Agency

Systemic Roadway 

Departure

2020 Rumble 

Stripes District 2

Roadway Rumble strips –

edge or shoulder

$1272333.22 $1272333.22 HSIP (23 

U.S.C. 148)

Multiple/Varies Multiple/Varies 0 State 

Highway 

Agency

Systemic Roadway 

Departure

2020 Rumble 

Stripes District 4

Roadway Rumble strips –

edge or shoulder

$2823289.15 $2823289.15 HSIP (23 

U.S.C. 148)

Multiple/Varies Multiple/Varies 0 State 

Highway 

Agency

Systemic Roadway 

Departure

2020 Rumble 

Stripes District 5

Roadway Rumble strips –

edge or shoulder

$863003.84 $863003.84 HSIP (23 

U.S.C. 148)

Multiple/Varies Multiple/Varies 0 State 

Highway 

Agency

Systemic Roadway 

Departure

2020 Rumble 

Stripes District 7

Roadway Rumble strips –

edge or shoulder

$946570.49 $946570.49 HSIP (23 

U.S.C. 148)

Multiple/Varies Multiple/Varies 0 State 

Highway 

Agency

Systemic Roadway 

Departure

Statewide 

Pedestrian and 

Bicycle Safety 

Action Plan 

(PBSAP)

Miscellaneous Transportation 

safety planning

$400000 $400000 HSIP (23 

U.S.C. 148)

Multiple/Varies Multiple/Varies 0 State 

Highway 

Agency

Systemic Roadway 

Departure

2021 Safety 

Program 

Administration

Miscellaneous Transportation 

safety planning

$450000 $500000 HSIP (23 

U.S.C. 148)

N/A N/A 0 State 

Highway 

Agency

Admin Administration

Safety Program 

Planning Phase FY 

2021

Miscellaneous Transportation 

safety planning

$450000 $500000 HSIP (23 

U.S.C. 148)

N/A N/A 0 State 

Highway 

Agency

Admin Administration
2021 South Carolina Highway Safety Improvement Program

Page 29 of 50

Safety Performance

General Highway Safety Trends

Present data showing the general highway safety trends in the State for the past five 

years.

PERFORMANCE 

MEASURES 2012 2013 2014 2015 2016 2017 2018 2019 2020

Fatalities 863 764 822 979 1,020 989 1,036 1,005 1,064

Serious Injuries 3,386 3,264 3,185 3,092 3,049 2,951 2,642 3,199 2,600

Fatality rate (per 

HMVMT)

1.765 1.560 1.646 1.891 1.870 1.780 1.820 1.720 1.977

Serious injury rate (per 

HMVMT)

6.920 6.663 6.376 5.980 5.610 5.380 4.650 5.570 4.831

Number non-motorized 

fatalities

136 115 123 139 169 172 187 190 201

Number of nonmotorized serious 

injuries

278 270 214 205 239 258 249 253 264
2021 South Carolina Highway Safety Improvement Program

Page 30 of 50

0

200

400

600

800

1000

1200

2012 2013 2014 2015 2016 2017 2018 2019 2020

Fatalities 5 Year Rolling Avg.

Annual Fatalities

0

500

1000

1500

2000

2500

3000

3500

4000

2012 2013 2014 2015 2016 2017 2018 2019 2020

Serious Injuries 5 Year Rolling Avg.

Annual Serious Injuries
2021 South Carolina Highway Safety Improvement Program

Page 31 of 50

0

0.5

1

1.5

2

2.5

2012 2013 2014 2015 2016 2017 2018 2019 2020

Fatality rate (per HMVMT) 5 Year Rolling Avg.

Fatality rate (per HMVMT)

0

1

2

3

4

5

6

7

8

2012 2013 2014 2015 2016 2017 2018 2019 2020

Serious injury rate (per HMVMT) 5 Year Rolling Avg.

Serious injury rate (per HMVMT)
2021 South Carolina Highway Safety Improvement Program

Page 32 of 50

Describe fatality data source.

FARS

To the maximum extent possible, present this data by functional classification and 

ownership.

Year 2020

Functional 

Classification

Number of Fatalities

(5-yr avg)

Number of Serious 

Injuries

(5-yr avg)

Fatality Rate

(per HMVMT)

(5-yr avg)

Serious Injury Rate

(per HMVMT)

(5-yr avg)

Rural Principal 

Arterial (RPA) - 

Interstate

69 117.2 0.85 1.43

Rural Principal 

Arterial (RPA) - Other 

Freeways and 

Expressways

2.2 2.2 0.74 0.76

Rural Principal 

Arterial (RPA) - Other

87.6 182.2 1.99 4.12

Rural Minor Arterial 128.8 257 3.02 6.01

Rural Minor Collector 12.2 31 4.6 11.77

Rural Major Collector 186.4 396.8 3.9 8.3

0

50

100

150

200

250

300

350

400

450

500

2012 2013 2014 2015 2016 2017 2018 2019 2020

Fatalities Serious Injuries 5 Year Rolling Avg.

Non Motorized Fatalities and Serious Injuries
2021 South Carolina Highway Safety Improvement Program

Page 33 of 50

Functional 

Classification

Number of Fatalities

(5-yr avg)

Number of Serious 

Injuries

(5-yr avg)

Fatality Rate

(per HMVMT)

(5-yr avg)

Serious Injury Rate

(per HMVMT)

(5-yr avg)

Rural Local Road or 

Street

63.8 178.4 2.11 5.91

Urban Principal 

Arterial (UPA) - 

Interstate

48.2 115.6 0.63 1.51

Urban Principal 

Arterial (UPA) - Other 

Freeways and 

Expressways

7.8 22.8 0.95 2.78

Urban Principal 

Arterial (UPA) - Other

167.2 519.8 2 6.2

Urban Minor Arterial 118.4 406.4 1.67 5.71

Urban Minor Collector 0.6 3 0 7.8

Urban Major Collector 72.2 262.4 1.79 6.48

Urban Local Road or 

Street

43.6 194 1.8 7.93
2021 South Carolina Highway Safety Improvement Program

Page 34 of 50

Year 2019

Roadways Number of Fatalities

(5-yr avg)

Number of Serious 

Injuries

(5-yr avg)

Fatality Rate

(per HMVMT)

(5-yr avg)

Serious Injury Rate

(per HMVMT)

(5-yr avg)

State Highway 

Agency

County Highway 

Agency

Town or Township 

Highway Agency

City or Municipal 

Highway Agency

State Park, Forest, or 

Reservation Agency

Local Park, Forest or 

Reservation Agency

Other State Agency

Other Local Agency

Private (Other than 

Railroad)

Railroad

State Toll Authority

Local Toll Authority

Other Public 

Instrumentality (e.g. 

Airport, School, 

University)

Indian Tribe Nation

Safety Performance Targets

Safety Performance Targets

Calendar Year 2022 Targets *

Number of Fatalities:1061.0

Describe the basis for established target, including how it supports SHSP goals.

The target of 1061.0 traffic fatalities was established after thorough analysis of historic data and trend line 

projections. For this measure, a polynomial order 2 trend analysis was used to determine projected 2021 data, 
2021 South Carolina Highway Safety Improvement Program

Page 35 of 50

then using this projection the state was able to determine a reasonable target for the five year period ending in 

2022. By examining planned projects and current safety initiatives (in the fields of education, enforcement, and 

engineering), the state was able to calculate an expected decrease from the increasing trend in the number of 

traffic fatalities during calendar year 2022. This target supports the SHSP goal of eliminating traffic fatalities in 

SC.

Number of Serious Injuries:2850.0

Describe the basis for established target, including how it supports SHSP goals.

A target of 2850.0 serious injuries was established after thorough analysis of historic data and trend line 

projections. For this measure, a polynomial order 2 trend analysis was used to determine projected 2021 data, 

then using this projection the state was able to determine a reasonable target for the five year period ending in 

2022. By examining planned projects and current safety initiatives (in the fields of education, enforcement, and 

engineering), the state was able to calculate an expected decrease in from the increasing trend in the number 

serious injuries during calendar year 2022. This target supports the SHSP goal of reducing serious injuries that 

resulted from a traffic collision.

Fatality Rate:1.820

Describe the basis for established target, including how it supports SHSP goals.

The target of 1.820 as the fatality rate was established by using the projected fatality number in 2022 along 

with an expected 2% increase in vehicle miles traveled during that year. As part of the SHSP, reducing the 

fatality rate remains a valuable target for the state.

Serious Injury Rate:4.892

Describe the basis for established target, including how it supports SHSP goals.

The target of 4.892 as the serious injury rate was established by using the projected serious injury number in 

2022 along with an expected 2% increase in vehicle miles traveled during that year. As part of the SHSP, 

reducing the serious injury rate remains a valuable target for the state.

Total Number of Non-Motorized Fatalities and Serious Injuries:500.0

Describe the basis for established target, including how it supports SHSP goals.

The target of 500.0 non-motorized fatalities and serious injuries was established after thorough analysis of 

historic data and trend line projections. For this measure, a polynomial order 2 trend analysis was used to 

determine projected 2021 data, then using this projection the state was able to determine a reasonable target 

for the five year period ending in 2022. By examining planned projects and current safety initiatives (in the 

fields of education, enforcement, and engineering), the state was able to calculate an expected decrease in the 

decreasing trend in the number in fatalities and serious injuries involving pedestrians and bicyclists during 

calendar year 2022.

Describe efforts to coordinate with other stakeholders (e.g. MPOs, SHSO) to establish 

safety performance targets. 

South Carolina established a coordinating group comprised of highway safety professionals from the SC 

Department of Transportation (SCDOT) and the SC Department of Public Safety, which houses the State 

Highway Safety Office. This group meets to discuss the historical and current trends as well projections related 

to the five safety performance areas. 
2021 South Carolina Highway Safety Improvement Program

Page 36 of 50

Staff from SCDOT is available to provide any information related to the safety targets, including baseline data, 

to all MPOs. Additionally the SCDOT Planning Office distributes individual MPO baseline data to all MPOs for 

their information. Statewide baseline and targets are also provided to MPOs.

Does the State want to report additional optional targets? 

No

Describe progress toward meeting the State’s 2020 Safety Performance Targets (based 

on data available at the time of reporting). For each target, include a discussion of any 

reasons for differences in the actual outcomes and targets.

PERFORMANCE MEASURES TARGETS ACTUALS

Number of Fatalities 1011.0 1022.8

Number of Serious Injuries 2781.0 2888.2

Fatality Rate 1.819 1.833

Serious Injury Rate 4.979 5.208

Non-Motorized Fatalities and 

Serious Injuries

380.0 436.4

The state anticipates meeting two of the five safety performance targets for 2016-2020. The preliminary five 

year averages for each measure are shown below. The target is shown in parenthesis after each target figure.

Fatalities: 1022.8 (1011.0)

Fatality Rate: 1.833 (1.819)

Serious Injuries: 2888.2 (2781.0) better than baseline

Serious Injury Rate: 5.208 (4.979) better than baseline

Non-motorized user fatalities and serious injuries combined: 436.4 (380.0)

Applicability of Special Rules

Does the HRRR special rule apply to the State for this reporting period? 

No

Provide the number of older driver and pedestrian fatalities and serious injuries 65 

years of age and older for the past seven years.

PERFORMANCE 

MEASURES 2014 2015 2016 2017 2018 2019 2020

Number of Older Driver 

and Pedestrian Fatalities

100 109 113 127 159 135 129
2021 South Carolina Highway Safety Improvement Program

Page 37 of 50

PERFORMANCE 

MEASURES 2014 2015 2016 2017 2018 2019 2020

Number of Older Driver 

and Pedestrian Serious 

Injuries

211 224 222 214 263 256 188

The older driver special rule applies to SC in the 2021 HSIP Annual Report. Older [Mature] Drivers are an 

Emphasis Area in the state’s current SHSP.
2021 South Carolina Highway Safety Improvement Program

Page 38 of 50

Evaluation 

Program Effectiveness

How does the State measure effectiveness of the HSIP?

• Benefit/Cost Ratio

Based on the measures of effectiveness selected previously, describe the results of 

the State's program level evaluations.

Selected projects have produced an average B/C ratio of 10.3

What other indicators of success does the State use to demonstrate effectiveness and 

success of the Highway Safety Improvement Program?

• HSIP Obligations

• Increased awareness of safety and data-driven process

• Other-Increased use of alternative intersections statewide

• Other-DDSA Final Report

Effectiveness of Groupings or Similar Types of Improvements

Present and describe trends in SHSP emphasis area performance measures.

Year 2020

SHSP Emphasis 

Area

Targeted 

Crash 

Type

Number 

of 

Fatalities

(5-yr avg)

Number 

of 

Serious 

Injuries

(5-yr avg)

Fatality 

Rate

 (per 

HMVMT)

(5-yr avg)

Serious 

Injury 

Rate

 (per 

HMVMT)

(5-yr avg)

Other 1 Other 2 Other 3

TEST

Young Driver (Age 

15-24)

288.8 959.8 0.51 1.7 0 0 0

Mature Drivers (65+) 214.2 534.8 0.38 0.95 0 0 0

Aggressive Driving 483.8 1,554 0.86 2.76 0 0 0

Impaired Driving 309.2 524.6 0.55 0.93 0 0 0

Distracted 54.4 317 0.1 0.56 0 0 0

Unbelted 331 523.8 0.58 0.92 0 0 0

Pedestrain 161.8 199.6 0.29 0.35 0 0 0

Bicycle 20 51.8 0.04 0.09 0 0 0
2021 South Carolina Highway Safety Improvement Program

Page 39 of 50

SHSP Emphasis 

Area

Targeted 

Crash 

Type

Number 

of 

Fatalities

(5-yr avg)

Number 

of 

Serious 

Injuries

(5-yr avg)

Fatality 

Rate

 (per 

HMVMT)

(5-yr avg)

Serious 

Injury 

Rate

 (per 

HMVMT)

(5-yr avg)

Other 1 Other 2 Other 3

Motorcycle 121.2 381.6 0.21 0.68 0 0 0

Heavy Truck 78 118.6 0.14 0.21 0 0 0

Train 1.8 2.4 0 0 0 0 0

Roadway Departure 429.6 1,129.2 0.76 2 0 0 0

Fixed Object 478.6 1,156.2 0.85 2.05 0 0 0

Intersection 211.2 818.4 0.37 1.45 0 0 0

Work Zone 15.4 31 0.03 0.05 0 0 0
2021 South Carolina Highway Safety Improvement Program

Page 40 of 50

0

100

200

300

400

500

600

Fatalities

2012-2016 2013-2017 2014-2018 2015-2019 2016-2020

Number of Fatalities 

5 Year Average

0

500

1000

1500

2000

2500

Serious Injuries

2012-2016 2013-2017 2014-2018 2015-2019 2016-2020

Number of Serious Injuries 

5 Year Average
2021 South Carolina Highway Safety Improvement Program

Page 41 of 50

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

Fatality Rate

2012-2016 2013-2017 2014-2018 2015-2019 2016-2020

Fatality Rate (per HMVMT) 

5 Year Average

0

0.5

1

1.5

2

2.5

3

3.5

4

4.5

Serious Injury Rate

2012-2016 2013-2017 2014-2018 2015-2019 2016-2020

Serious Injury Rate (per HMVMT) 

5 Year Average
 

 

 

 

 

 

2021 South Carolina Highway Safety Improvement Program 

Project Effectiveness 

Provide the following information for previously implemented projects that the State evaluated this reporting period. 

LOCATION FUNCTIONAL 

CLASS 

IMPROVEMENT 

CATEGORY 

IMPROVEMENT 

TYPE 

PDO 

BEFORE 

PDO 

AFTER 

FATALITY 

BEFORE 

FATALITY 

AFTER 

SERIOUS 

INJURY 

BEFORE 

SERIOUS 

INJURY 

AFTER 

ALL OTHER 

INJURY 

BEFORE 

ALL OTHER 

INJURY 

AFTER 

TOTAL 

BEFORE 

TOTAL 

AFTER 

EVALUATION 

RESULTS 

(BENEFIT/COST

RATIO) 

US 78 & SC 27 Rural Major 

Collector 

Intersection 

geometry 

Add/modify 

auxiliary lanes 

11.00 11.00 3.00 2.00 14.00 13.00 .61 

S-86 & S-164 

& S-729 

Rural Major 

Collector 

Roadway Superelevation / 

cross slope 

6.00 4.00 10.00 2.97 

SC 146 & SC 

417 

Urban Minor 

Arterial 

Intersection 

geometry 

Innovative 

Intersection (e.g. 

MUT, RCUT, 

QR) 

11.00 4.00 2.00 2.00 15.00 4.00 5.05 

S-15 & S-264 Urban Major 

Collector 

Intersection 

geometry 

Add/modify 

auxiliary lanes 

16.00 2.00 7.00 3.00 23.00 5.00 3.50 

SC 9 & S-420 Rural Principal 

Arterial (RPA) -

Other 

Intersection 

geometry 

Innovative 

Intersection (e.g. 

MUT, RCUT, 

QR) 

1.00 3.00 1.00 2.00 3.00 1.00 7.00 4.00 34.52 

SC 9 & Flag 

Patch Rd 

Rural Principal 

Arterial (RPA) -

Other 

Intersection 

geometry 

Innovative 

Intersection (e.g. 

MUT, RCUT, 

QR) 

4.00 1.00 2.00 2.00 2.00 8.00 3.00 5.73 

SC 9 & S-664 Rural Principal 

Arterial (RPA) -

Other 

Intersection 

geometry 

Innovative 

Intersection (e.g. 

MUT, RCUT, 

QR) 

4.00 1.00 8.00 1.00 13.00 1.00 67.83 

S-30 & S-106 Urban Major 

Collector 

Intersection 

geometry 

Add/modify 

auxiliary lanes 

23.00 9.00 5.00 2.00 28.00 11.00 1.44 

SC 24 & SC 59 Rural Minor 

Arterial 

Intersection 

geometry 

Intersection 

realignment 

16.00 6.00 1.00 2.00 2.00 1.00 19.00 9.00 31.35 

I 26 MP 

144.85 -

145.75 

Rural Principal 

Arterial (RPA) -

Interstate 

Interchange 

design 

Interchange 

design - other 

21.00 8.00 4.00 9.00 1.00 34.00 9.00 3.01 

US 21 & S-52 Urban Minor 

Arterial 

Intersection 

geometry 

Add/modify 

auxiliary lanes 

13.00 10.00 1.00 3.00 2.00 16.00 13.00 .51 

SC 146 & SC 

417 

Urban Minor 

Arterial 

Intersection 

geometry 

Innovative 

Intersection (e.g. 

MUT, RCUT, 

QR) 

12.00 13.00 1.00 1.00 1.00 14.00 14.00 -1.67 

S-25 & S-522 Urban Major 

Collector 

Intersection 

geometry 

Innovative 

Intersection (e.g. 

19.00 8.00 7.00 26.00 8.00 3.05 

Page 42 of 50 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2021 South Carolina Highway Safety Improvement Program 

LOCATION FUNCTIONAL 

CLASS 

IMPROVEMENT 

CATEGORY 

IMPROVEMENT 

TYPE 

PDO 

BEFORE 

PDO 

AFTER 

FATALITY 

BEFORE 

FATALITY 

AFTER 

SERIOUS 

INJURY 

BEFORE 

SERIOUS 

INJURY 

AFTER 

ALL OTHER 

INJURY 

BEFORE 

ALL OTHER 

INJURY 

AFTER 

TOTAL 

BEFORE 

TOTAL 

AFTER 

EVALUATION 

RESULTS 

(BENEFIT/COST

RATIO) 

MUT, RCUT, 

QR) 

S-34 (MP 0.87 

- 2.15) 

Rural Minor 

Collector 

Roadway Roadway - other 6.00 13.00 1.00 2.00 4.00 6.00 10.00 22.00 -4.45 

S-158 (MP 

2.24 - 6.74) 

Rural Major 

Collector 

Roadway Roadway - other 23.00 17.00 1.00 1.00 20.00 9.00 44.00 27.00 5.42 

S-507 (MP 0.0 

- 3.04) 

Rural Major 

Collector 

Roadway Roadway - other 11.00 6.00 2.00 2.00 13.00 8.00 5.25 

S-781 (MP 0.0 

- 2.31) 

Rural Major 

Collector 

Roadway Roadway - other 10.00 11.00 2.00 1.00 12.00 12.00 10.89 

S-816 (MP 0.0 

- 4.34) 

Rural Major 

Collector 

Roadway Roadway - other 12.00 15.00 1.00 1.00 3.00 7.00 16.00 23.00 -5.39 

S-485 (MP 0.0 

- 6.34) 

Rural Major 

Collector 

Roadway Roadway - other 16.00 25.00 2.00 8.00 3.00 26.00 28.00 -.69 

I 85 (MP 88.6 -

89.5) 

Urban 

Principal 

Arterial (UPA) -

Interstate 

Roadway Roadway - other 48.00 67.00 1.00 20.00 17.00 69.00 84.00 -1.69 

US 21 (MP 20 

- 21) 

Rural Major 

Collector 

Roadway Roadway - other 4.00 2.00 3.00 3.00 12.00 151.21 

S-24 (MP 5.6 -

7.75) 

Rural Major 

Collector 

Roadway Roadway - other 8.00 8.00 1.00 2.00 2.00 13.00 8.00 63.03 

S-179 (MP 

2.73 - 5.66) 

Rural Major 

Collector 

Roadway Roadway - other 25.00 23.00 2.00 13.00 9.00 40.00 32.00 97.27 

S-13 (MP 9.85 

- 19.67) 

Rural Major 

Collector 

Roadway Roadway - other 46.00 50.00 3.00 3.00 1.00 1.00 16.00 22.00 66.00 76.00 31.83 

SC 186 (MP 

0.0 - 4.36) 

Rural Major 

Collector 

Roadway Roadway - other 19.00 16.00 1.00 2.00 1.00 2.00 10.00 7.00 31.00 27.00 8.50 

S-29 (MP 3.33 

- 5.18) 

Rural Major 

Collector 

Roadway Roadway - other 10.00 6.00 3.00 2.00 12.00 9.00 0.34 

SC 34 (MP 

2.95 - 4.7) 

Rural Minor 

Collector 

Roadway Roadway - other 13.00 5.00 1.00 1.00 2.00 2.00 5.00 6.00 21.00 14.00 32.52 

SC 462 (MP 0 

- 12.77) 

Rural Major 

Collector 

Roadway Roadway - other 113.00 96.00 1.00 3.00 5.00 4.00 28.00 44.00 147.00 147.00 22.87 

S-47 (MP 3.89 

- 8.35) 

Rural Major 

Collector 

Roadway Roadway - other 5.00 1.00 2.00 4.00 8.00 4.00 -3.72 

Page 43 of 50 
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2021 South Carolina Highway Safety Improvement Program 

LOCATION FUNCTIONAL 

CLASS 

IMPROVEMENT 

CATEGORY 

IMPROVEMENT 

TYPE 

PDO 

BEFORE 

PDO 

AFTER 

FATALITY 

BEFORE 

FATALITY 

AFTER 

SERIOUS 

INJURY 

BEFORE 

SERIOUS 

INJURY 

AFTER 

ALL OTHER 

INJURY 

BEFORE 

ALL OTHER 

INJURY 

AFTER 

TOTAL 

BEFORE 

TOTAL 

AFTER 

EVALUATION 

RESULTS 

(BENEFIT/COST

RATIO) 

S-347 (MP 0.0 

- 3.05) 

Rural Major 

Collector 

Roadway Roadway - other 10.00 10.00 1.00 10.00 6.00 21.00 16.00 3.6 

S-29 (MP 0.0 -

9.73) 

Rural Major 

Collector 

Roadway Roadway - other 24.00 31.00 3.00 1.00 1.00 23.00 18.00 51.00 50.00 24.99 

S-187 (MP 0.0 

- 3.47) 

Rural Major 

Collector 

Roadway Roadway - other 16.00 5.00 1.00 7.00 4.00 24.00 9.00 5.31 

S-51 (MP 0.0 -

11.7) 

Rural Major 

Collector 

Roadway Roadway - other 22.00 32.00 1.00 4.00 2.00 17.00 16.00 44.00 50.00 -69.25 

S-51 (MP 0.0 -

6.48) 

Rural Major 

Collector 

Roadway Roadway - other 46.00 52.00 1.00 17.00 18.00 64.00 70.00 -11.24 

S-627 (MP 0.0 

- 6.34) 

Rural Major 

Collector 

Roadway Roadway - other 17.00 21.00 1.00 1.00 1.00 8.00 14.00 27.00 36.00 13.55 

S-60 (MP 0.0 

2.839) 

Rural Major 

Collector 

Roadway Roadway - other 11.00 9.00 1.00 9.00 3.00 20.00 13.00 0.59 

US 178 (MP 

0.0 - 16.77) 

Rural Major 

Collector 

Roadway Roadway - other 44.00 40.00 2.00 2.00 6.00 4.00 35.00 14.00 87.00 60.00 17.39 

S-1041 (MP 

4.75 - 5.5) 

Urban Major 

Collector 

Roadway Roadway - other 10.00 3.00 1.00 9.00 1.00 20.00 4.00 6.83 

US 321 (MP 

12.29 - 19.29) 

Rural Minor 

Arterial 

Roadway Roadway - other 19.00 33.00 3.00 2.00 14.00 20.00 38.00 53.00 -72.41 

S-955 (MP 0.0 

- 3.87) 

Urban Major 

Collector 

Roadway Roadway - other 28.00 28.00 1.00 1.00 6.00 7.00 36.00 35.00 1.71 

S-223 (MP 0.0 

- 4.77) 

Rural Major 

Collector 

Roadway Roadway - other 19.00 19.00 1.00 2.00 18.00 5.00 39.00 25.00 4.74 

S-222 (MP 

3.43 - 6.68) 

Rural Major 

Collector 

Roadway Roadway - other 20.00 20.00 4.00 10.00 11.00 30.00 35.00 -0.15 

S-37 (MP 0.0 

5.83) 

Rural Major 

Collector 

Roadway Roadway - other 33.00 40.00 1.00 1.00 1.00 11.00 14.00 45.00 56.00 -14.28 

S-196 (MP 0.1 

- 3.32) 

Rural Local 

Road or Street 

Roadway Roadway - other 17.00 16.00 5.00 2.00 22.00 18.00 0.8 

SC 418 (MP 

0.0 - 3.34) 

Rural Major 

Collector 

Roadway Roadway - other 8.00 16.00 1.00 3.00 5.00 6.00 16.00 23.00 1.06 

S-105 (MP 0.0 

- 3.76) 

Rural Major 

Collector 

Roadway Roadway - other 15.00 13.00 2.00 8.00 7.00 23.00 22.00 1.82 

S-458 (MP 0.0 

- 4.4) 

Rural Major 

Collector 

Roadway Roadway - other 12.00 12.00 9.00 5.00 21.00 17.00 7.62 

Page 44 of 50 
 

 

2021 South Carolina Highway Safety Improvement Program 

LOCATION FUNCTIONAL 

CLASS 

IMPROVEMENT 

CATEGORY 

IMPROVEMENT 

TYPE 

PDO 

BEFORE 

PDO 

AFTER 

FATALITY 

BEFORE 

FATALITY 

AFTER 

SERIOUS 

INJURY 

BEFORE 

SERIOUS 

INJURY 

AFTER 

ALL OTHER 

INJURY 

BEFORE 

ALL OTHER 

INJURY 

AFTER 

TOTAL 

BEFORE 

TOTAL 

AFTER 

EVALUATION 

RESULTS 

(BENEFIT/COST

RATIO) 

S-528 (MP 

2.47 - 4.91) 

Rural Major 

Collector 

Roadway Roadway - other 14.00 9.00 1.00 1.00 4.00 3.00 19.00 13.00 1.62 

S-25 (MP 0.0 -

5.57) 

Rural Major 

Collector 

Roadway Roadway - other 23.00 13.00 1.00 2.00 3.00 11.00 7.00 36.00 24.00 9.36 

Page 45 of 50 
2021 South Carolina Highway Safety Improvement Program

Page 46 of 50

Compliance Assessment

What date was the State’s current SHSP approved by the Governor or designated State representative?

 12/09/2020

What are the years being covered by the current SHSP?

From: 2020 To: 2024

When does the State anticipate completing it’s next SHSP update?

 2025

Provide the current status (percent complete) of MIRE fundamental data elements collection efforts using the table below. 

*Based on Functional Classification (MIRE 1.0 Element Number) [MIRE 2.0 Element Number]

ROAD TYPE *MIRE NAME (MIRE 

NO.)

NON LOCAL PAVED

ROADS - SEGMENT

NON LOCAL PAVED

ROADS - INTERSECTION

NON LOCAL PAVED

ROADS - RAMPS LOCAL PAVED ROADS UNPAVED ROADS

STATE NON-STATE STATE NON-STATE STATE NON-STATE STATE NON-STATE STATE NON-STATE

ROADWAY SEGMENT Segment Identifier 

(12) [12]

100 100 100 95 100 95

Route Number (8) 

[8]

100 100

Route/Street Name 

(9) [9]

100 100

Federal Aid/Route 

Type (21) [21]

100 100

Rural/Urban 

Designation (20) [20]

100 100 100 95

Surface Type (23) 

[24]

100 100 100 95

Begin Point 

Segment Descriptor 

(10) [10]

100 100 100 95 100 95

End Point Segment 

Descriptor (11) [11]

100 100 100 95 100 95

Segment Length 

(13) [13]

100 100

Direction of 

Inventory (18) [18]

100 100

Functional Class 

(19) [19]

100 100 100 95 100 95
2021 South Carolina Highway Safety Improvement Program

Page 47 of 50

ROAD TYPE *MIRE NAME (MIRE 

NO.)

NON LOCAL PAVED

ROADS - SEGMENT

NON LOCAL PAVED

ROADS - INTERSECTION

NON LOCAL PAVED

ROADS - RAMPS LOCAL PAVED ROADS UNPAVED ROADS

STATE NON-STATE STATE NON-STATE STATE NON-STATE STATE NON-STATE STATE NON-STATE

Median Type (54) 

[55]

100 100

Access Control (22) 

[23]

100 100

One/Two Way 

Operations (91) [93]

100 100

Number of Through 

Lanes (31) [32]

100 100 100 95

Average Annual 

Daily Traffic (79) [81]

100 100 100 95

AADT Year (80) [82] 100 100

Type of 

Governmental 

Ownership (4) [4]

100 100 100 95 100 95

INTERSECTION Unique Junction 

Identifier (120) [110]

100 95

Location Identifier 

for Road 1 Crossing 

Point (122) [112]

100 95

Location Identifier 

for Road 2 Crossing 

Point (123) [113]

100 95

Intersection/Junction 

Geometry (126) 

[116]

Intersection/Junction 

Traffic Control (131) 

[131]

AADT for Each 

Intersecting Road 

(79) [81]

100 100

AADT Year (80) [82] 100 100

Unique Approach 

Identifier (139) [129]

100 100

INTERCHANGE/RAMP Unique Interchange 

Identifier (178) [168]

100 100

Location Identifier 

for Roadway at 

100 100
2021 South Carolina Highway Safety Improvement Program

Page 48 of 50

ROAD TYPE *MIRE NAME (MIRE 

NO.)

NON LOCAL PAVED

ROADS - SEGMENT

NON LOCAL PAVED

ROADS - INTERSECTION

NON LOCAL PAVED

ROADS - RAMPS LOCAL PAVED ROADS UNPAVED ROADS

STATE NON-STATE STATE NON-STATE STATE NON-STATE STATE NON-STATE STATE NON-STATE

Beginning of Ramp 

Terminal (197) [187]

Location Identifier 

for Roadway at 

Ending Ramp 

Terminal (201) [191]

100 100

Ramp Length (187) 

[177]

100 100

Roadway Type at 

Beginning of Ramp 

Terminal (195) [185]

100 100

Roadway Type at 

End Ramp Terminal 

(199) [189]

100 100

Interchange Type 

(182) [172]

100 100

Ramp AADT (191) 

[181]

95 95

Year of Ramp AADT 

(192) [182]

95 95

Functional Class 

(19) [19]

100 100

Type of 

Governmental 

Ownership (4) [4]

100 100

Totals (Average Percent Complete): 100.00 100.00 75.00 73.13 99.09 99.09 100.00 95.00 100.00 95.00

*Based on Functional Classification (MIRE 1.0 Element Number) [MIRE 2.0 Element Number]

Describe actions the State will take moving forward to meet the requirement to have complete access to the MIRE fundamental data elements on all public roads by September 30, 2026.

States are required to have access to a complete collection of Model Inventory of Roadway Elements (MIRE) fundamental data elements (FDE) on all public roads by September 30, 2026. Of the 33 unique MIRE FDE identified, the South 

Carolina Department of Transportation currently has access to 87.9%, missing only four elements. The state has identified and prioritized the collection of the remaining MIRE FDE. Several projects in the state’s Traffic Records Strategic 

Plan address improvements to the collection of MIRE FDE. Specifically, Collision Report Form Revision, Intersections with Traffic Signals Database, Local Agency Data Collection for Road Location Coding, Rural/Urban Designation and 

Roadway Surface Type Database, Horizontal Roadway Curve Identification, Roadway Shoulder/Width Data Cleansing, Traffic Records Dashboard, and Posted Speed Limit Project. SCDOT’s Roadway Inventory Division is coordinating 

with the Traffic Records Coordinating Committee on the projects listed above. Data elements that are not planned for as part of these projects will be collected through SCDOT efforts directed by the Roadway Inventory Division.
2021 South Carolina Highway Safety Improvement Program

Page 49 of 50

Optional Attachments

Program Structure:

Project Implementation:

Safety Performance:

Evaluation:

Compliance Assessment:
2021 South Carolina Highway Safety Improvement Program

Page 50 of 50

Glossary

5 year rolling average: means the average of five individuals, consecutive annual points of data 

(e.g. annual fatality rate).

Emphasis area: means a highway safety priority in a State’s SHSP, identified through a data-driven, 

collaborative process.

Highway safety improvement project: means strategies, activities and projects on a public road 

that are consistent with a State strategic highway safety plan and corrects or improves a hazardous 

road location or feature or addresses a highway safety problem.

HMVMT: means hundred million vehicle miles traveled.

Non-infrastructure projects: are projects that do not result in construction. Examples of noninfrastructure projects include road safety audits, transportation safety planning activities, 

improvements in the collection and analysis of data, education and outreach, and enforcement 

activities.

Older driver special rule: applies if traffic fatalities and serious injuries per capita for drivers and 

pedestrians over the age of 65 in a State increases during the most recent 2-year period for which 

data are available, as defined in the Older Driver and Pedestrian Special Rule Interim Guidance 

dated February 13, 2013.

Performance measure: means indicators that enable decision-makers and other stakeholders to 

monitor changes in system condition and performance against established visions, goals, and 

objectives.

Programmed funds: mean those funds that have been programmed in the Statewide Transportation 

Improvement Program (STIP) to be expended on highway safety improvement projects.

Roadway Functional Classification: means the process by which streets and highways are 

grouped into classes, or systems, according to the character of service they are intended to provide.

Strategic Highway Safety Plan (SHSP): means a comprehensive, multi-disciplinary plan, based on 

safety data developed by a State Department of Transportation in accordance with 23 U.S.C. 148.

Systematic: refers to an approach where an agency deploys countermeasures at all locations across 

a system.

Systemic safety improvement: means an improvement that is widely implemented based on high 

risk roadway features that are correlated with specific severe crash types.

Transfer: means, in accordance with provisions of 23 U.S.C. 126, a State may transfer from an 

apportionment under section 104(b) not to exceed 50 percent of the amount apportioned for the fiscal 

year to any other apportionment of the State under that section.