South Carolina

Highway Safety Improvement Program

2013 Annual Report

Prepared by: SC
ii

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. 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.”
iii

Table of Contents

Disclaimer...................................................................................................................................................... ii

Executive Summary.......................................................................................................................................1

Introduction ..................................................................................................................................................2

Program Structure ........................................................................................................................................2

Program Administration ...........................................................................................................................2

Program Methodology..............................................................................................................................8

Progress in Implementing Projects.............................................................................................................13

Funds Programmed............................................................................................................................. 13

General Listing of Projects.................................................................................................................. 16

Progress in Achieving Safety Performance Targets....................................... Error! Bookmark not defined.

Overview of General Safety Trends....................................................... Error! Bookmark not defined.

Application of Special Rules................................................................... Error! Bookmark not defined.

Assessment of the Effectiveness of the Improvements (Program Evaluation) ..........................................60

SHSP Emphasis Areas............................................................................. Error! Bookmark not defined.

Groups of similar project types.............................................................. Error! Bookmark not defined.

Systemic Treatments ............................................................................. Error! Bookmark not defined.

Glossary.......................................................................................................................................................90
iv
2013 South Carolina Highway Safety Improvement Program

1

Executive Summary

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 96 percent of fatal crashes and the vast majority of severe crashes occur on the 

state system. This report covers funding obligations for the period from October 1, 2012 to July 

31, 2013.

Please note that several sections for programs administered under the HSIP were not included 

in this 2012 report due to the lack of detailed definitions and identification methodologies. We 

will continue to work with FHWA in expanding future reports as issues with the on-line 

reporting tool are clarified and resolved. 
2013 South Carolina Highway Safety Improvement Program

2

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 MAP-21 Reporting Guidance dated February 13, 2013 and consists 

of four sections: program structure, progress in implementing HSIP projects, 

progress in achieving safety performance targets, and assessment of the 

effectiveness of the improvements. 

Program Structure

Program Administration

How are Highway Safety Improvement Program funds allocated in a State? 

Central

District

Other

Describe how local roads are addressed as part of Highway Safety Improvement Program.

In South Carolina, the vast majority (~96%) of fatal crashes occur on state-maintained 

roadways. Due this statistic, our primary focus for safety has been on state-maintained 

roadways. However, we have recently planned for 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, we will incorporate local roads into our 

safety funding if a viable need is observed. 
2013 South Carolina Highway Safety Improvement Program

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It is also worth noting that South Carolina maintains the fifth largest highway system in the 

nation at over 41,000 center-line miles of roadway, despite a land area of roughly 30,000 

square miles. Furthermore, 19% of all public roads in the nation are state maintained while 

South Carolina's public roads encompass 63% of its total roadway miles.

Identify which internal partners are involved with Highway Safety Improvement Program planning. 

Design

Planning

Maintenance

Operations

Governors Highway Safety Office

Other: 

Briefly 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. 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, Syncho analysis, signal operations, etc. 

Identify which external partners are involved with Highway Safety Improvement Program planning. 

Metropolitan Planning Organizations
2013 South Carolina Highway Safety Improvement Program

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Governors Highway Safety Office

Local Government Association

Other: 

Identify any program administration practices used to implement the HSIP that have changed since 

the last reporting period.

Multi-disciplinary HSIP steering committee

Other: Other-No changes have been made since the last reporting period

Describe any other aspects of Highway Safety Improvement Program Administration on which you 

would like to elaborate.

Highway Safety Improvement Program Process

Every state is required by the federal government to administer a Highway Safety Improvement 

Program (HSIP). Part 924 of Title 23 of the Code of Federal Regulations (CFR) states, in part:

924.5 Policy. “Each state shall develop and implement, on a continuing basis, a highway safety 

improvement program which has the overall objective of reducing the number and severity of 

accidents and decreasing the potential for accidents on all highways.”

924.7 Program Structure. “The highway safety improvement program in each state shall 

consist of components for planning, implementation, and evaluation of safety programs and 

projects.”
2013 South Carolina Highway Safety Improvement Program

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The purpose of the South Carolina HSIP is to establish guidelines for the effective use of 

available funds, to reduce the number and severity of crashes and to decrease the potential for 

crashes on highways in the state. 

The program consists of the following three components: planning, implementation, and 

evaluation.

 

1. PLANNING 

a. Data Management 

In order to locate hazardous locations the following information is essential:

• Crash data – Crash reports are provided by DPS. 

• Traffic data – Traffic volumes are provided by the Traffic Engineering.

• Roadway Data – Road characteristics are provided by the Traffic Engineering.

b. Identify Hazardous Locations

Using the information listed above, potential locations are identified by:

• Recommendations from SCDOT and FHWA personnel.

• Requests from governmental units other than SCDOT and FHWA.

• Requests from citizens. 

• Ongoing research of all fatal crash reports received from DPS.

• Ongoing research of the HSIP database.

The HSIP database has been established to identify, prioritize, and provide guidance for 

selecting potential projects. The information gathered for a location is analyzed using the 

following methods: 

• Crash Rate – Equates frequency of crashes to traffic volumes (and length of roadway if 

section). A typical crash rate would be expressed in # of crashes per million vehicles 

entering (if intersection) or per one hundred million vehicle miles of travel (if section).

 Severity Rate – A weighted calculation for determining the severity of the crashes. It is 

based on the EPDO (Equivalent Property Damage Only) method from studies performed by the 
2013 South Carolina Highway Safety Improvement Program

6

National Safety Council and the Traffic Institute at Northwestern University. The severity 

indices used are listed below: (from the Traffic Institute at Northwestern University)

Fatality = 12

Injury = 3

Property Damage Only = 1

• Rate Quality 

This method entails the calculation of the crash rate at each location and a statistical test to 

determine if that rate is significantly higher than crash rates for other locations with similar 

characteristics. 

The critical rate is compared to the actual crash rate for each location. If the actual crash rate 

exceeds the critical rate, then the location may be considered for improvement. 

• Number-Rate 

Combines crash frequency and crash rate methods by first ranking by the number of crashes.

Establishes a frequency threshold and then re-ranks the locations. Based on a crash rate 

threshold, locations with lower crash rates are eliminated. 

c. Conduct Engineering Studies 

Once a potential project location has been identified, the following steps are taken to 

determine if geometric improvements can be implemented that will reduce the volume and 

severity of the crashes reported at the location. 

• Analyze Project Location

Crash reports are obtained and analyzed for locations selected for detailed review. Results from 

analyses along with engineering judgment are used to determine if further investigation is 

needed along with site review. 

• Develop Candidate Countermeasures and Project Proposals

Site reviews are conducted to determine characteristics of locations relative to types of crashes 

occurring. Improvements are recommended to address patterns in crashes.
2013 South Carolina Highway Safety Improvement Program

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• Establish Project Priorities 

Estimate costs for recommended improvements at each site along with expected reduction in 

crashes for these improvements. Summarize estimated costs and benefits for improvements 

and determine the most cost effective improvement alternative for a location using the Net 

Benefit Method along with engineering judgment. 

The net benefit method compares the estimated annual costs of implementing the selected 

countermeasure to the expected annual benefits. The expected annual benefit is calculated 

using the most current “comprehensive costs” of motor vehicle traffic crashes and the 

estimated crash reduction percentage expected as a result of implementing the selected 

countermeasure. 

Comprehensive costs are a measure of motor vehicle accident costs that include the effects of 

injury on people's entire lives. This is the most useful measure of accident cost since it includes 

all cost components and places a dollar value on each one. Comprehensive life values are 

estimated by examining risk reduction costs from which the market value of safety is inferred. 

The 11 components of the comprehensive cost are: property damage, lost earnings, lost 

household production, medical costs, emergency services, travel delay, vocational 

rehabilitation, workplace costs, administrative, legal, pain, and lost quality of life. 

 

2. IMPLEMENTATION 

Given that the overall charge of the HSIP program is to reduce the number and severity of 

crashes, it is imperative that the implementation phase be carried out in a timely manner. Once 

the project has been approved for funding, it is necessary to design and schedule the project to 

implement the improvements. All HSIP Projects are managed by one of the following offices:

• Preconstruction 

• Traffic Engineering 

• Consultant

Given the appropriate conditions, a Participation Agreement may be arranged with other 

governmental entities. A participation agreement is a contractual partnership between the 

SCDOT and one or more other governmental entities where funding is combined to complete a 

project. The agreement includes the specifying of the roles, responsibilities, and financial 

obligations of each participant. 
2013 South Carolina Highway Safety Improvement Program

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3. EVALUATION 

 To Determine the Effect of Highway Safety Improvements 

Before and After Studies are conducted on all HSIP projects to evaluate the effectiveness of the 

overall program by observed changes in crash number, rate and severity resulting from 

program implementation. The HSIP office conducts studies three years after final inspection of 

a project. The studies include:

• Photographs of existing conditions at the site prior to improvements.

• After a period of no less than 3 years after the completion of the project, crash data and 

the most recent traffic volumes are collected for the location.

• The data collected before implementing safety improvements is then compared with the 

data collected after the improvements have been completed.

• The information described above is used to calculate the resulting crash rate reduction 

factor for the improved site. The total cost of the project along with the reduction factor 

is used to conduct a Benefit Cost Analysis to determine the overall effectiveness of the 

project.

• Photographs of the improved conditions are recorded along with all Benefit Cost 

Analysis. This information is used to help with the selection of future projects.

Program Methodology

Select the programs that are administered under the HSIP. 

Median Barrier Intersection Safe Corridor

Horizontal Curve Bicycle Safety Rural State Highways

Skid Hazard Crash Data Red Light Running Prevention

Roadway Departure Low-Cost Spot Improvements Sign Replacement And 

Improvement

Local Safety Pedestrian Safety Right Angle Crash

Left Turn Crash Shoulder Improvement Segments

Other: Other-Safety Program
2013 South Carolina Highway Safety Improvement Program

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Program: Other-Safety Program

Date of Program Methodology: 1/1/2013

 

What data types were used in the program methodology? 

Crashes Exposure Roadway

All crashes Traffic Median width

Fatal crashes only Volume Horizontal curvature

Fatal and serious injury 

crashes only

Population Functional classification

Other Lane miles Roadside features

Other Other 

What project identification methodology was used for this program? 

Crash frequency

Expected crash frequency with EB adjustment

Equivalent property damage only (EPDO Crash frequency)

EPDO crash frequency with EB adjustment

Relative severity index

Crash rate

Critical rate

Level of service of safety (LOSS)

Excess expected crash frequency using SPFs
2013 South Carolina Highway Safety Improvement Program

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Excess expected crash frequency with the EB adjustment

Excess expected crash frequency using method of moments

Probability of specific crash types

Excess proportions of specific crash types

Other 

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

Yes

No

How are highway safety improvement projects advanced for implementation?

Competitive application process

selection committee

Other 

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).

Relative Weight in Scoring

Rank of Priority Consideration

Ranking based on B/C 3

Available funding 2

Incremental B/C

Ranking based on net benefit 3
2013 South Carolina Highway Safety Improvement Program

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Cost Effectiveness 1

What proportion of highway safety improvement program funds address systemic improvements? 

30

Highway safety improvment program funds are used to address which of the following systemic 

improvments?

Cable Median Barriers Rumble Strips

Traffic Control Device Rehabilitation Pavement/Shoulder Widening

Install/Improve Signing Install/Improve Pavement Marking and/or 

Delineation

Upgrade Guard Rails Clear Zone Improvements

Safety Edge Install/Improve Lighting

Add/Upgrade/Modify/Remove Traffic Signal Other 

What process is used to identify potential countermeasures? 

Engineering Study

Road Safety Assessment

Other: 
2013 South Carolina Highway Safety Improvement Program

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Identify any program methodology practices used to implement the HSIP that have changed since the 

last reporting period.

Highway Safety Manual

Road Safety audits

Systemic Approach

Other: Other-Nothing has changed since the last reporting period

Describe any other aspects of the Highway Safety Improvement Program methodology on which you 

would like to elaborate. 

Projects selected for the HSIP have historically been based on one of the following analysis 

methods:

1. Crash Rate Method

2. Rate Quality Control Method

3. Crash Severity Method

4. Number Rate Method

In addition to these methods, the Highway Safety Manual provides additional statistical 

methods and safety performance functions that are also being incorporated in the selection 

process.

All of the HSIP projects are selected under the guise of the SCDOT Strategic Highway Safety Plan 

(SHSP) where “Safety” is identified as a top priority for the agency. The Plan describes one of 
2013 South Carolina Highway Safety Improvement Program

13

the goals of SCDOT as “reducing traffic fatalities by twenty-five people per year, and reduce 

traffic crashes by 3 percent each year”.

HSIP projects are developed in collaboration with the following emphasis areas identified in the 

SHSP which are:

Serious Crash Types: Focus on Prevention of Run-off-Road Crashes, Injuries, and 

Fatalities

High Risk Drivers: Focus on Prevention of Aggressive Driving Crashes, Injuries and 

Fatalities

Special Vehicles: Focus on Commercial Vehicle Safety/Sharing the Road with Large 

Trucks

Vulnerable Roadway Users: Focus on Improving Safety of Pedestrians, Bicyclists, and 

Motorcyclists

Progress in Implementing Projects

Funds Programmed

Reporting period for Highway Safety Improvement Program funding.

Calendar Year

State Fiscal Year

Federal Fiscal Year

Enter the programmed and obligated funding for each applicable funding category.
2013 South Carolina Highway Safety Improvement Program

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Funding Category Programmed* Obligated

HSIP (Section 148) 47000000 85 % 32553445 79 %

HRRRP (SAFETEA-LU) 1302093 2 % 1302093 3 %

HRRR Special Rule 0 0 % 0 0 %

Penalty Transfer -

Section 154

Penalty Transfer –

Section 164

Incentive Grants - 

Section 163

1423928 3 % 1423928 3 %

Incentive Grants (Section 

406)

Other Federal-aid Funds 

(i.e. STP, NHPP)

2446519 4 % 2446519 6 %

State and Local Funds 3317449 6 % 3317449 8 %

Totals 55489989 100% 41043434 100%

How much funding is programmed to local (non-state owned and maintained) safety projects? 

$0.00

How much funding is obligated to local safety projects?

$0.00
2013 South Carolina Highway Safety Improvement Program

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

$0.00

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

$0.00

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

period?

$0.00

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

period? 

$0.00

Discuss impediments to obligating Highway Safety Improvement Program funds and plans to 

overcome this in the future.

The obligations shown in the above chart covers a period from October 1, 2012 - July 31, 2013.

SCDOT currently has advance construction funds on the books to be obligated in August and 

September on various safety projects to utilize remaining HSIP allocations.

Describe any other aspects of the general Highway Safety Improvement Program implementation 

progress on which you would like to elaborate.
2013 South Carolina Highway Safety Improvement Program

16

General Listing of Projects

List each highway safety improvement project obligated during the reporting period. 

Project Improvemen

t Category 

Output HSIP Cost Total Cost Fundin

g 

Categor

y

Functional 

Classificati

on

AAD

T

Spee

d

Roadway 

Ownershi

p

Relationship to SHSP

Emphasis 

Area

Strateg

y

2012-

DISTRICT 3 

Rumble 

Strips

Shoulder 

treatments 

Shoulder 

treatments -

other

135.83 

Miles

1367400.

8

1367400.

8

HSIP Varies 

Depending 

on Route

0 0 State 

Highway 

Agency

Keeping 

vehicles in 

the roadway

2013-

DISTRICT 1 

Rumble 

Strips

Shoulder 

treatments 

Shoulder 

treatments -

other

77.36 

Miles

5000 5000 HSIP Varies 

Depending 

on Route

0 0 State 

Highway 

Agency

Keeping 

vehicles in 

the roadway

2013-

DISTRICT 2 

Rumble 

Strips

Shoulder 

treatments 

Shoulder 

treatments -

other

150.76 

Miles

5000 5000 HSIP Varies 

Depending 

on Route

0 0 State 

Highway 

Agency

Keeping 

vehicles in 

the roadway

2013-

DISTRICT 3 

Rumble 

Strips

Shoulder 

treatments 

Shoulder 

treatments -

181.32 

Miles

5000 5000 HSIP Varies 

Depending 

on Route

0 0 State 

Highway 

Agency

Keeping 

vehicles in 

the roadway
2013 South Carolina Highway Safety Improvement Program

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other

2013-

DISTRICT 4 

Rumble 

Strips

Shoulder 

treatments 

Shoulder 

treatments -

other

206.64 

Miles

5000 5000 HSIP Varies 

Depending 

on Route

0 0 State 

Highway 

Agency

Keeping 

vehicles in 

the roadway

2013-

DISTRICT 5 

Rumble 

Strips

Shoulder 

treatments 

Shoulder 

treatments -

other

177.74 

Miles

5000 5000 HSIP Varies 

Depending 

on Route

0 0 State 

Highway 

Agency

Keeping 

vehicles in 

the roadway

2013-

DISTRICT 6 

Rumble 

Strips

Shoulder 

treatments 

Shoulder 

treatments -

other

130.14 

Miles

5000 5000 HSIP Varies 

Depending 

on Route

0 0 State 

Highway 

Agency

Keeping 

vehicles in 

the roadway

2013-

DISTRICT 7 

Rumble 

Strips

Shoulder 

treatments 

Shoulder 

treatments -

other

188.51 

Miles

5000 5000 HSIP Varies 

Depending 

on Route

0 0 State 

Highway 

Agency

Keeping 

vehicles in 

the roadway

DISTRICT 4 

LCSI Signal 

Upgrades

Intersection 

traffic 

control 

Intersection 

traffic 

53 

Numbe

rs

618315.6 618315.6 HSIP Varies 

Depending 

on Route

0 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 
2013 South Carolina Highway Safety Improvement Program

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control -

other

intersection

s

DISTRICT 5 

LCSI Signal 

Upgrades

Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

148 

Numbe

rs

690792 690792 HSIP Varies 

Depending 

on Route

0 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

District 5 

Pavement 

Markings

Shoulder 

treatments 

Shoulder 

treatments -

other

84.35 

Miles

0 185.94 HSIP Varies 

Depending 

on Route

0 0 State 

Highway 

Agency

Keeping 

vehicles in 

the roadway

DISTRICT 5, 6, 

7 Profile 

Thermoplasti

c Pavement 

Markings

Shoulder 

treatments 

Shoulder 

treatments -

other

76.69 

Miles

1075065.

46

1075065.

46

HSIP Varies 

Depending 

on Route

0 0 State 

Highway 

Agency

Keeping 

vehicles in 

the roadway

DISTRICT 6 

CHARLESTON 

COUNTY LCSI 

Signal 

Upgrades

Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

8 

Numbe

rs

50000 50000 HSIP Varies 

Depending 

on Route

0 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s
2013 South Carolina Highway Safety Improvement Program

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DISTRICT 6 

LCSI Signal 

Upgrades

Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

221 

Numbe

rs

1362967.

08

1362967.

08

HSIP Varies 

Depending 

on Route

0 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

DISTRICT 7 

LCSI Signal 

Upgrades

Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

23 

Numbe

rs

412861.8 412861.8 HSIP Varies 

Depending 

on Route

0 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

I-26 Exit 103 

Left Turn 

Lanes

Intersection 

geometry 

Auxiliary 

lanes - add 

left-turn lane

1 

Numbe

rs

13445.52 14939.44 HSIP Urban 

Principal 

Arterial -

Interstate

1836

9

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

I-26 between 

MP 75.5-76.5 

& MP 81.5-

83.5

Roadway 

Roadway -

other

3 Miles 477000 530000 HSIP Rural 

Principal 

Arterial -

Other

0 0 State 

Highway 

Agency

Minimizing 

the 

consequenc

es of leaving 

the road
2013 South Carolina Highway Safety Improvement Program

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I-26 FROM 

MP 168 TO 

198.18

Roadside 

Removal of 

roadside 

objects 

(trees, poles, 

etc.)

30.18 

Miles

54000 60000 HSIP Rural 

Principal 

Arterial -

Other

0 0 State 

Highway 

Agency

Minimizing 

the 

consequenc

es of leaving 

the road

I-85 MP 88.6 

- MP 89.5

Roadway 

Superelevati

on / cross 

slope

0.9 

Miles

2132038.

26

2368931.

41

HSIP Urban 

Principal 

Arterial -

Interstate

5380

0

0 State 

Highway 

Agency

Minimizing 

the 

consequenc

es of leaving 

the road

I-85 NB 

RAMP @ US 

178

Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

33797 37553 HSIP Urban 

Principal 

Arterial -

Interstate

2867

5

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

I-95 from Mp 

50.5 to MP 

53

Roadway 

Roadway -

other

2.5 

Miles

2235.53 2483.89 HSIP Rural 

Principal 

Arterial -

Other

3750

0

0 State 

Highway 

Agency

Minimizing 

the 

consequenc

es of leaving 

the road

INTERSECTIO

N OF SC 24 

WITH SC 187

Intersection 

geometry 

Intersection 

geometry -

1 

Numbe

rs

1182278 1313642 HSIP Urban 

Principal 

Arterial -

1325

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 
2013 South Carolina Highway Safety Improvement Program

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other Other highway 

intersection

s

Low Cost 

Safety 

Improvement

s Statewide

Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

1999 

Numbe

rs

2117159.

1

2117159.

1

HSIP Varies 

Depending 

on Route

0 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

Resurfacing 

Throughout 

Berkeley 

County (S-16)

Shoulder 

treatments 

Shoulder 

treatments -

other

4 Miles 450000 2537092.

4

HSIP Rural Minor 

Arterial

0 0 State 

Highway 

Agency

Keeping 

vehicles in 

the roadway

S-104 CHALK 

BED ROAD 

FROM S-69 

ERGLE 

STREET TO 

US 1

Roadside 

Roadside 

grading

0.5 

Miles

65700 114742.4

9

HSIP Rural Minor 

Collector

2100 0 State 

Highway 

Agency

Minimizing 

the 

consequenc

es of leaving 

the road

S-1041 Roadway 

Roadway -

other

1.25 

Miles

964299.9

3

1121444.

36

HSIP Rural Major 

Collector

3400 0 State 

Highway 

Agency

Minimizing 

the 

consequenc

es of leaving 

the road
2013 South Carolina Highway Safety Improvement Program

22

S-1203 Roadway 

Roadway -

other

0.5 

Miles

271517.1

3

301685.7 HSIP Urban Local 

Road or 

Street

4400 0 State 

Highway 

Agency

Minimizing 

the 

consequenc

es of leaving 

the road

S-1258 with 

S-535

Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

25544 28382 HSIP Urban 

Major 

Collector

1442

5

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

S-15 with S264Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

1 

Numbe

rs

477166 530184 HSIP Urban 

Minor 

Arterial

1010

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

S-15 with S556Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

1 

Numbe

rs

54787 60874 HSIP Urban 

Minor 

Arterial

1190

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s
2013 South Carolina Highway Safety Improvement Program

23

S-166 (Brushy 

Creek) with 

S-347 

(Hudson Rd)

Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

193500 215000 HSIP Urban 

Minor 

Arterial

1515

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

S-166 (W. Lee 

Rd) with S167 (Waddell 

Rd)

Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

95692 106324 HSIP Urban 

Major 

Collector

6700 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

S-1912 

(WHITE 

HORSE ROAD 

EXT.) @S-50

Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

61020 67800 HSIP Urban 

Major 

Collector

9500 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

S-22 @ S-58 Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

180000 200000 HSIP Rural Minor 

Arterial

1235

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection
2013 South Carolina Highway Safety Improvement Program

24

s

S-24 FROM S13 TO US 52Roadway 

Roadway -

other

2.25 

Miles

459489.6

6

510544.0

7

HRRR Rural Major 

Collector

600 0 State 

Highway 

Agency

Minimizing 

the 

consequenc

es of leaving 

the road

S-26 @ S-358 Intersection 

geometry 

Auxiliary 

lanes - add 

left-turn lane

1 

Numbe

rs

0 8763 HSIP Urban 

Minor 

Arterial

1070

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

S-28 (Camp) 

with S-95

Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

1 

Numbe

rs

37910.13 42122.37 HSIP Urban 

Major 

Collector

1435

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

S-28 @ S-53 Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

25000 25000 HSIP Urban 

Major 

Collector

9850 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection
2013 South Carolina Highway Safety Improvement Program

25

s

S-30 (Mineral 

Springs Rd) 

with S-106

Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

22500 25000 HSIP Urban 

Minor 

Arterial

1020

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

S-313 FROM 

MP 2.5 TO 

3.1

Roadway 

Roadway -

other

0.6 

Miles

460074.6

5

511194.0

7

HSIP Urban 

Minor 

Arterial

4800 0 State 

Highway 

Agency

Minimizing 

the 

consequenc

es of leaving 

the road

S-34 @ S1910 & S1848Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

1 

Numbe

rs

669302.6

1

743669.5

6

HSIP Urban 

Minor 

Arterial

5613 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

S-347 FROM 

MP 0.3 TO 

MP 1.0

Roadway 

Roadway -

other

0.7 

Miles

291882.5

5

401065.4

8

HSIP Urban 

Major 

Collector

1440

0

0 State 

Highway 

Agency

Minimizing 

the 

consequenc

es of leaving 

the road
2013 South Carolina Highway Safety Improvement Program

26

S-354 FROM 

SC34/151 TO 

S-49

Roadway 

Roadway -

other

5.81 

Miles

753169.9

7

836855.5

1

HRRR Rural Major 

Collector

2400 0 State 

Highway 

Agency

Minimizing 

the 

consequenc

es of leaving 

the road

S-36 CAMP 

CREEK ROAD 

@ S-246/S-51

Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

707760.2

3

786400.2

5

HSIP Rural Major 

Collector

2700 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

S-362 FROM 

.47 MILES 

EAST OF S-39 

TO .67 MILES 

EAST OF S-39

Roadway 

Roadway -

other

0.2 

Miles

42605.08 47338.98 HRRR Rural Major 

Collector

3000 0 State 

Highway 

Agency

Minimizing 

the 

consequenc

es of leaving 

the road

S-40 (Joe 

Frazier) with 

S-263

Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

10394.79 10394.79 HSIP Rural Minor 

Collector

4780 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

S-42 with S64Intersection 

geometry 

Intersection 

1 

Numbe

27319.62 30355.11 HSIP Urban 

Major 

5998 0 State 

Highway 

Improving 

the design 

and 
2013 South Carolina Highway Safety Improvement Program

27

geometry -

other

rs Collector Agency operation of 

highway 

intersection

s

S-45 with S901Intersection 

geometry 

Auxiliary 

lanes - add 

left-turn lane

1 

Numbe

rs

231923.0

7

447132.3

1

HSIP Urban 

Minor 

Arterial

1100

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

S-49 (Atlas 

Rd) with S-50 

(Greenlawn 

Dr)

Intersection 

geometry 

Auxiliary 

lanes - add 

left-turn lane

1 

Numbe

rs

78923.07 87692.31 HSIP Urban 

Minor 

Arterial

1090

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

S-51 (Rifle 

Range) with 

S-504 

(Hamlin)

Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

237855.5 264283.8

9

HSIP Rural Major 

Collector

1060

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

S-529 AND S- Intersection 

geometry 

1 

Numbe

15962 17735.56 HSIP Rural 

Principal 

1472 0 State 

Highway 

Improving 

the design 
2013 South Carolina Highway Safety Improvement Program

28

1216 Auxiliary 

lanes - add 

left-turn lane

rs Arterial -

Other

5 Agency and 

operation of 

highway 

intersection

s

S-55 Roadway 

Roadway -

other

0.86 

Miles

26128.95 74935.35 HRRR Rural Major 

Collector

600 0 State 

Highway 

Agency

Minimizing 

the 

consequenc

es of leaving 

the road

S-674 (Piney 

Grove Rd) 

with S-1280 

(Piney 

Woods Rd)

Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

330923.0

8

367692.3

1

HSIP Urban 

Minor 

Arterial

8475 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

S-76 (Old 

Marion) with 

S-282 (E. 

Jackson)

Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

505496 561662 HSIP Urban 

Major 

Collector

5157 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

S-77 (Two 

Notch Rd) 

with S-278 

Intersection 

traffic 

control 

1 

Numbe

780923.0

7

867692.3

1

HSIP Rural Minor 

Arterial

7300 0 State 

Highway 

Improving 

the design 

and 
2013 South Carolina Highway Safety Improvement Program

29

(Calks Ferry 

Rd)

Intersection 

traffic 

control -

other

rs Agency operation of 

highway 

intersection

s

S-77 (Two 

Notch) with 

S-60 (Wire 

Road)

Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

1032009 1146676 HSIP Rural Major 

Collector

4200 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

S-81 FROM 

US 76 TO S481 (BETH 

EDEN ROAD)

Roadway 

signs and 

traffic 

control 

Roadway 

signs and 

traffic 

control -

other

3.5 

Miles

20700 23000 HRRR Rural Local 

Road or 

Street

200 0 State 

Highway 

Agency

Minimizing 

the 

consequenc

es of leaving 

the road

S-83 (Hard 

Scrabble Rd) 

with S-1050 

(Lee Rd)

Intersection 

geometry 

Auxiliary 

lanes - add 

right-turn 

lane

1 

Numbe

rs

141923.0

7

157692.3

1

HSIP Urban 

Minor 

Arterial

2730

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s
2013 South Carolina Highway Safety Improvement Program

30

S-86 @ S-164 

& S-729

Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

15155.2 16839.12 HSIP Rural Major 

Collector

2375 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

S-87 

MORMON 

CHURCH 

ROAD @ S488

Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

22500 25000 HSIP Rural Minor 

Collector

6825 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 101 @ S135Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

180000 200000 HSIP Rural Major 

Collector

7200 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 11 with S135 (Critter 

Rd)

Intersection 

traffic 

control 

Intersection 

traffic 

control -

1 

Numbe

rs

65282.76 72536.41 HSIP Rural Minor 

Arterial

8000 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection
2013 South Carolina Highway Safety Improvement Program

31

other s

SC 116 

(Laurel Bay) 

with S-390

Intersection 

geometry 

Auxiliary 

lanes - add 

left-turn lane

1 

Numbe

rs

16740.5 18600.56 HSIP Rural Major 

Collector

7860 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 116 

(Laurel Bay) 

with S-86

Intersection 

geometry 

Intersection 

geometrics -

realignment 

to increase 

cross street 

offset

1 

Numbe

rs

0.09 0.1 HSIP Rural Major 

Collector

7230 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 118 

(Robert M 

Bell Pkwy) 

with S-895 

(Gregg Hwy)

Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

1 

Numbe

rs

492923.0

7

547692.3

1

HSIP Urban 

Minor 

Arterial

1110

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 120 

(Pinewood 

Rd) with S251 (Starks 

Intersection 

geometry 

Auxiliary 

lanes - add 

1 

Numbe

rs

366923.0

7

407692.3

1

HSIP Rural Minor 

Arterial

3935 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 
2013 South Carolina Highway Safety Improvement Program

32

Ferry Rd) left-turn lane highway 

intersection

s

SC 120 @ S528Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

45000 50000 HSIP Rural Minor 

Arterial

9900 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 146 @ SC 

417

Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

180000 200000 HSIP Rural Minor 

Arterial

3525 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 146 @ SC 

417

Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

180000 200000 HSIP Rural Minor 

Arterial

1950

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 151 

BUSINESS @ 

Intersection 

geometry 

Intersection 

1 

Numbe

25000 25000 HSIP Rural Minor 

Arterial

1450

0

0 State 

Highway 

Improving 

the design 

and 
2013 South Carolina Highway Safety Improvement Program

33

S-102 geometry -

other

rs Agency operation of 

highway 

intersection

s

SC 19 @ S503Intersection 

geometry 

Auxiliary 

lanes - add 

left-turn lane

1 

Numbe

rs

44497.58 49441.76 HSIP Rural 

Principal 

Arterial -

Other

1159

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 24 (WEST 

OAK 

HIGHWAY) @ 

SC 59

Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

91992.75 102214.1

7

HSIP Rural Minor 

Arterial

8200 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 252 @S203Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

22500 25000 HSIP Rural Major 

Collector

4300 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 290 

LOCUST HILL 

Intersection 

geometry 

1 

Numbe

67500 75000 HSIP Rural Minor 1890 0 State 

Highway 

Improving 

the design 
2013 South Carolina Highway Safety Improvement Program

34

ROAD @ S171Intersection 

geometrics -

modify skew 

angle

rs Arterial 0 Agency and 

operation of 

highway 

intersection

s

SC 291 with 

S-27 & S-7

Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

2 

Numbe

rs

45000 50000 HSIP Urban 

Minor 

Arterial

2640

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 292 AND 

S-52

Intersection 

geometry 

Auxiliary 

lanes - add 

left-turn lane

1 

Numbe

rs

192437.4 433847.6

5

HSIP Rural Minor 

Arterial

9490 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 302 

(Edmond 

Hwy) with S625 (Old 

Charleston 

Rd)

Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

1 

Numbe

rs

599888.8

2

666543.1

3

HSIP Rural Minor 

Arterial

1165

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s
2013 South Carolina Highway Safety Improvement Program

35

SC 38 @ S329Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

25000 25000 HSIP Rural Minor 

Arterial

6000 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 402 with 

SC 125

Roadway 

Rumble 

strips - edge 

or shoulder

1 

Numbe

rs

513568.4

3

570631.5

8

HSIP Rural Major 

Collector

2525 0 State 

Highway 

Agency

Minimizing 

the 

consequenc

es of leaving 

the road

SC 51 @ S551Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

12741.25 14156.94 HSIP Rural Minor 

Arterial

9250 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 55 with S114 

(Kingsbury 

Rd)

Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

0 47.77 HSIP Rural Major 

Collector

6212 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s
2013 South Carolina Highway Safety Improvement Program

36

SC 6 with S73Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

68253.12 68253.12 HSIP Rural Major 

Collector

9000 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 6 with SC 

302

Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

2278.93 2532.15 HSIP Rural Minor 

Arterial

1355

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 6 with SC 

302 and S279

Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

6110.42 6789.36 HSIP Rural Minor 

Arterial

1150

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 763 @_S507Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

67500 60000 HSIP Rural Minor 

Arterial

6850 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection
2013 South Carolina Highway Safety Improvement Program

37

s

SC 8 (Pelzer 

Hwy) with S485 (St. Paul 

Road)

Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

166708.7

6

193043.6

8

HSIP Rural Minor 

Arterial

9400 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 81 with S1084Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

891546.8

6

990607.6

1

HSIP Rural Major 

Collector

3190 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 9 Bus. 

With S-66

Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

219.68 244.09 HSIP Rural Major 

Collector

7625 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

SC 90 with US 

501

Intersection 

traffic 

control 

Intersection 

traffic 

1 

Numbe

rs

27000 30000 HSIP Urban 

Minor 

Arterial

2465

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 
2013 South Carolina Highway Safety Improvement Program

38

control -

other

intersection

s

STATEWIDE 

2009 Rumble 

Strips

Shoulder 

treatments 

Shoulder 

treatments -

other

1194 

Miles

1714697.

99

1714697.

99

HSIP Varies 

Depending 

on Route

0 0 State 

Highway 

Agency

Keeping 

vehicles in 

the roadway

Thermoplasti

c Pavement 

Markings in 

Districts 1,3,4 

(4751.042317

)

Shoulder 

treatments 

Shoulder 

treatments -

other

119.45 

Miles

2430604.

16

2430604.

16

HSIP Varies 

Depending 

on Route

0 0 State 

Highway 

Agency

Keeping 

vehicles in 

the roadway

US 1 

(Meeting 

Street) @ S370 (9th 

Street)

Intersection 

geometry 

Auxiliary 

lanes - add 

left-turn lane

1 

Numbe

rs

58226.04 65834.28 HSIP Urban 

Minor 

Arterial

1955

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

US 123 FROM 

S-271 TO SC 8

Roadway 

Rumble 

strips - edge 

or shoulder

1 

Numbe

rs

703592.9

5

703592.9

5

HSIP Rural 

Principal 

Arterial -

Other

0 0 State 

Highway 

Agency

Minimizing 

the 

consequenc

es of leaving 

the road
2013 South Carolina Highway Safety Improvement Program

39

US 17 with SC 

162

Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

734025.2

4

815583.6

1

HSIP Rural 

Principal 

Arterial -

Other

2735

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

US 17, S-20 

AND S-1024

Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

9531.87 10590.97 HSIP Urban 

Principal 

Arterial -

Other

1080

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

US 178 

MOOREFIELD 

MEMORIAL 

HWY @ S-64 

& S-326

Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

22500 25000 HSIP Rural Minor 

Arterial

7695 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

US 21 ALONG 

PRINCETON 

RD AND 

SPRINGSTEE

N ROAD

Intersection 

geometry 

Auxiliary 

lanes - add 

right-turn 

lane

1 

Numbe

rs

180000 280070 HSIP Rural 

Principal 

Arterial -

Other

1925

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection
2013 South Carolina Highway Safety Improvement Program

40

s

US 301 (Alex 

Harvin Hwy) 

@ S-63 

(Raccoon 

Road)

Intersection 

geometry 

Auxiliary 

lanes - add 

left-turn lane

1 

Numbe

rs

3129.43 3477.14 HSIP Rural Major 

Collector

7000 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

US 321 @ S663Intersection 

geometry 

Auxiliary 

lanes -

modify leftturn lane 

offset

1 

Numbe

rs

655187.3

6

727985.9

5

HSIP Rural 

Principal 

Arterial -

Other

2040

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

US 401 with 

S-19

Intersection 

geometry 

Intersection 

geometry -

other

1 

Numbe

rs

124497.9

1

124497.9

1

HSIP Rural Minor 

Arterial

5100 0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

US 52 @ S1343Intersection 

geometry 

Intersection 

geometry -

1 

Numbe

rs

180000 200000 HSIP Urban 

Principal 

Arterial -

Other

4377

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 
2013 South Carolina Highway Safety Improvement Program

41

other intersection

s

US 52 @ S-37 Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

1 

Numbe

rs

31813.48 35348.31 HSIP Urban 

Principal 

Arterial -

Other

5490

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

US 52 with S50Intersection 

geometry 

Intersection 

geometrics -

realignment 

to increase 

cross street 

offset

1 

Numbe

rs

8516.57 9462.85 HSIP Rural 

Principal 

Arterial -

Other

2044

2

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

US 76 Bus 

(Broad St) 

with US 521 

(Camden 

Hwy)

Intersection 

traffic 

control 

Intersection 

traffic 

control -

other

1 

Numbe

rs

411923.0

7

457692.3

1

HSIP Urban 

Minor 

Arterial

3550

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s

US 78 with S27Intersection 

geometry 

Intersection 

1 

Numbe

675000 750000 HSIP Rural 

Principal 

Arterial -

1025

0

0 State 

Highway 

Improving 

the design 

and 
2013 South Carolina Highway Safety Improvement Program

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geometry -

other

rs Other Agency operation of 

highway 

intersection

s

US21/176/32

1 SPLIT 

NEAR_DIXIA

NA

Intersection 

geometry 

Intersection 

geometrics -

modify skew 

angle

1 

Numbe

rs

46924.19 57592.48 HSIP Rural 

Principal 

Arterial -

Other

2425

0

0 State 

Highway 

Agency

Improving 

the design 

and 

operation of 

highway 

intersection

s
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Progress in Achieving Safety Performance Targets

Overview of General Safety Trends

Present data showing the general highway safety trends in the state for the past five years. 

Performance Measures* 2008 2009 2010 2011 2012

Number of fatalities 921 894 809 828 863

Number of serious injuries 3513 3448 3462 3260 3390

Fatality rate (per HMVMT) 1.88 1.84 1.65 1.7 1.76

Serious injury rate (per HMVMT) 7.16 7.09 7.05 6.69 6.93

*Performance measure data is presented using a five-year rolling average.
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To the maximum extent possible, present performance measure* data by functional classification and ownership. 

Year - 2012

Function Classification Number of fatalities Number of serious injuries Fatality rate (per HMVMT) Serious injury rate (per HMVMT)

RURAL PRINCIPAL 

ARTERIAL - INTERSTATE

57 137 0.76 1.83

RURAL PRINCIPAL 

ARTERIAL - OTHER 

FREEWAYS AND 

EXPRESSWAYS

76 213 1.67 4.67

RURAL PRINCIPAL 

ARTERIAL - OTHER

0 0 0 0

RURAL MINOR 

ARTERIAL

106 250 2.8 6.6

RURAL MINOR 

COLLECTOR

17 44 5.95 15.41

RURAL MAJOR 

COLLECTOR

179 475 3.68 9.75

RURAL LOCAL ROAD OR 

STREET

63 222 2.63 9.25

URBAN PRINCIPAL 36 115 0.58 1.86
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ARTERIAL - INTERSTATE

URBAN PRINCIPAL 

ARTERIAL - OTHER 

FREEWAYS AND 

EXPRESSWAYS

8 45 0.98 5.5

URBAN PRINCIPAL 

ARTERIAL - OTHER

90 502 1.25 6.97

URBAN MINOR 

ARTERIAL

62 357 1.08 6.24

URBAN MINOR 

COLLECTOR

0 0 0 0

URBAN MAJOR 

COLLECTOR

58 224 1.67 6.46

URBAN LOCAL ROAD 

OR STREET

32 166 1.49 7.74

OTHER 0 0 0 0

UNKNOWN 77 471 0 0

UNKNOWN 77 471 0 0
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Year - 2012

Roadway Ownership Number of fatalities Number of serious injuries Fatality rate (per HMVMT) Serious injury rate (per HMVMT)

STATE HIGHWAY 

AGENCY

817 2953 1.73 6.25

COUNTY HIGHWAY 

AGENCY

0 0 0 0

TOWN OR TOWNSHIP 

HIGHWAY AGENCY

0 0 0 0

CITY OF MUNICIPAL 

HIGHWAY AGENCY

0 0 0 0

STATE PARK, FOREST, 

OR RESERVATION 

AGENCY

0 0 0 0

LOCAL PARK, FOREST 

OR RESERVATION 

AGENCY

0 0 0 0

OTHER STATE AGENCY 0 0 0 0

OTHER LOCAL AGENCY 0 0 0 0

PRIVATE (OTHER 

THAN RAILROAD)

0 0 0 0
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RAILROAD 0 0 0 0

STATE TOLL 

AUTHORITY

0 0 0 0

LOCAL TOLL 

AUTHORITY

0 0 0 0

OTHER PUBLIC 

INSTRUMENTALITY 

(E.G. AIRPORT, 

SCHOOL, UNIVERSITY)

0 0 0 0

INDIAN TRIBE NATION 0 0 0 0

OTHER 46 268 2.8 16.32

OTHER 46 268 2.8 16.32
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Describe any other aspects of the general highway safety trends on which you would like to elaborate.

From the previous performance measure charts involving functional class, a few categories did 

not apply to the data gathered in South Carolina. For instance, some functional classes are not 

segregated as thoroughly as the chart indicates. The chart has two breakdowns for rural 

principal arterial, non-interstate while South Carolina only has one. Similarly, South Carolina 

uses urban collector as a category while the chart breaks it down into urban minor collector and 

urban major collector. For the purpose of this report, all urban collector routes were 

designated as urban major collector. South Carolina also had some data that did not specify the 

functional class. These data were listed in a new category labeled "unknown" because these 

values could be in any of the other categories.

The performance measures regarding roadway ownership also did not line up well with South 

Carolina data. The only reliable way South Carolina could separate the data into roadway 

ownership was state-owned and non-state-owned, as can be seen in the previous charts.

Application of Special Rules

Present the rate of traffic fatalities and serious injuries per capita for drivers and pedestrians over the 

age of 65. 

Older Driver

Performance Measures

2008 2009 2010 2011 2012

Fatality rate (per capita) 0 0 0 0 0

Serious injury rate (per 

capita)

0 0 0 0 0

Fatality and serious injury 

rate (per capita)

0 0 0 0 0

*Performance measure data is presented using a five-year rolling average.

Statistics on the rate of traffic fatalities and serious injuries per capita for drivers and 

pedestrians over the age of 65 are not included in this report. Data related to this category 

could not be confirmed for accuracy at this time, therefore SCDOT is working to verify the 

correct numbers before reporting the data as a performance measure.
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Does the older driver special rule apply to your state? 

No
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Assessment of the Effectiveness of the Improvements (Program 

Evaluation)

What indicators of success can you use to demonstrate effectiveness and success in the Highway 

Safety Improvement Program?

None

Benefit/cost

Policy change

Other: 
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What significant programmatic changes have occurred since the last reporting period? 

Shift Focus to Fatalities and Serious Injuries

Include Local Roads in Highway Safety Improvement Program

Organizational Changes

None

Other: 
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Briefly describe significant program changes that have occurred since the last reporting period. 

SCDOT did not make any significant program changes since the last reporting period.
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SHSP Emphasis Areas
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For each SHSP emphasis area that relates to the HSIP, present trends in emphasis area performance measures. 

Year - 2012

HSIP-related SHSP 

Emphasis Areas

Target 

Crash Type

Number of 

fatalities

Number of 

serious injuries

Fatality rate (per 

HMVMT)

Serious injury rate 

(per HMVMT)

Other1Other2Other3
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Groups of similar project types
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Present the overall effectiveness of groups of similar types of projects.

Year - 2012

HSIP Sub-program 

Types

Target 

Crash Type

Number of 

fatalities

Number of 

serious injuries

Fatality rate (per 

HMVMT)

Serious injury rate 

(per HMVMT)

Other1Other2Other3
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Systemic Treatments
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Present the overall effectiveness of systemic treatments.. 

Year - 2012

Systemic 

improvement

Target 

Crash Type

Number of 

fatalities

Number of 

serious injuries

Fatality rate (per 

HMVMT)

Serious injury rate 

(per HMVMT)

Other1Other2Other3
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Describe any other aspects of the overall Highway Safety Improvement Program effectiveness on 

which you would like to elaborate. 

SCDOT completed 37 before and after studies on projects funded through the HSIP since the 

submission of last year's report. The average benefit/cost ratio of these projects is 16.66. The 

average crash rate reduction for the 37 projects was 47.7%.
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Provide project evaluation data for completed projects (optional). 

Location Functional 

Class

Improvement 

Category

Improvement 

Type

BefFatalBefSerious 

Injury

BefOther 

Injury

BefPDOBefTotalAftFatalAftSerious 

Injury

AftOther 

Injury

AftPDOAftTotalEvaluation 

Results 

(Benefit/ 

Cost Ratio)

SC 90 [US 501 

to S-20 (Sea 

Mountain 

Hwy)]

Rural 

Minor 

Arterial

Roadway 

delineation

Improve 

retroreflectivity

0 0 0 0 0 0 0 0 0 0 173.76

US 76 (Broad 

River Road) @ 

S-58 (Koon 

Road) & S-957 

(Farming Creek 

Road)

Urban 

Minor 

Arterial

Intersection 

geometry

Intersection 

geometrics -

modify skew 

angle

0 0 0 0 0 0 0 0 0 0 5.53

S-14 (Rev J W 

Carter Road)/ 

S-25 (Moses 

Dingle Road)/ 

S-62 (Loss 

Brook Road)/ 

S-127 (Bill 

Davis Road) @ 

S-64 (M W 

Rural 

Major 

Collector

Intersection 

geometry

Auxiliary lanes -

add left-turn 

lane

0 0 0 0 0 0 0 0 0 0 0.75
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Rickenbaker 

Road)

S-47 (Brodie 

Road) @ S-77 

(Two Notch 

Road)

Rural 

Major 

Collector

Intersection 

geometry

Intersection 

geometrics -

modify skew 

angle

0 0 0 0 0 0 0 0 0 0 106.54

US 25 @ US 

178 

(Moorefield 

Street) & SC 

185

Rural 

Principal 

Arterial -

Other

Intersection 

geometry

Intersection 

geometry -

other

0 0 0 0 0 0 0 0 0 0 2.66

US 1 (Meeting 

Street) @ S370 (9th 

Street)

Urban 

Minor 

Arterial

Intersection 

geometry

Auxiliary lanes -

add left-turn 

lane

0 0 0 0 0 0 0 0 0 0 7.74

US 501 @ SC 

41 Alternate

Rural 

Principal 

Arterial -

Other

Interchange 

design

Convert atgrade 

intersection to 

interchange

0 0 0 0 0 0 0 0 0 0 7.37

US 301 (Alex 

Harvin Hwy) @ 

S-63 (Raccoon 

Road)

Urban 

Collector

Intersection 

geometry

Auxiliary lanes -

add left-turn 

lane

0 0 0 0 0 0 0 0 0 0 1.87

US 1 (Two 

Notch Road) @ 

Urban 

Principal 

Intersection Auxiliary lanes -

add left-turn 

0 0 0 0 0 0 0 0 0 0 -0.36
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S-424 (Rabon 

Road)

Arterial -

Other

geometry lane

SC 12 (Percival 

Road) @ S-63 

(Alpine Road)

Urban 

Minor 

Arterial

Intersection 

geometry

Auxiliary lanes -

add left-turn 

lane

0 0 0 0 0 0 0 0 0 0 3.83

US 221 

(Hampton 

Street/ 

Rutherfordton 

Hwy) @ US 221 

Connector 

(Pickens 

Street) & S-146 

(Oconee 

Street)

Rural 

Minor 

Arterial

Intersection 

geometry

Intersection 

geometrics -

realignment to 

align offset 

cross streets

0 0 0 0 0 0 0 0 0 0 16.09

SC 914 

(Memorial 

Park Road/ 

Grace Avenue) 

@ S-50 (Grace 

Avenue) & S222 (Small 

Street)

Urban 

Collector

Intersection 

geometry

Auxiliary lanes -

add left-turn 

lane

0 0 0 0 0 0 0 0 0 0 3.13

US 321 

(Savannah 

Hwy) @ SC 3 

(Whetstone 

Rural 

Principal 

Arterial -

Alignment Horizontal 

curve 

realignment

0 0 0 0 0 0 0 0 0 0 10.07
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Road) Other

US 221 (S 

Church Street 

Ext) @ S-540 

(Airport Road)

Urban 

Principal 

Arterial -

Other

Intersection 

geometry

Intersection 

geometrics -

realignment to 

align offset 

cross streets

0 0 0 0 0 0 0 0 0 0 4.97

S-20 (Broad 

River 

Boulevard) @ 

S-40 (Joe 

Frazier Road)

Urban 

Collector

Intersection 

geometry

Auxiliary lanes -

add left-turn 

lane

0 0 0 0 0 0 0 0 0 0 5.85

SC 6 (Ranger 

Drive) @ SC 

311 (Hwy 311) 

& S-135 

(Mudville 

Road)

Rural 

Minor 

Arterial

Intersection 

geometry

Auxiliary lanes -

add left-turn 

lane

0 0 0 0 0 0 0 0 0 0 0.37

I-26 @ S-757 

(Harbison 

Boulevard)

Urban 

Principal 

Arterial -

Interstate

Intersection 

geometry

Intersection 

geometrics -

re-assign 

existing lane 

use

0 0 0 0 0 0 0 0 0 0 4.15

SC 64 

(Charleston 

Hwy) @ S-41 

Rural 

Minor 

Arterial

Intersection 

geometry

Intersection 

geometrics -

modify skew 

0 0 0 0 0 0 0 0 0 0 63.7
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(Ritter Road) angle

US 15 (N 

Marquis Hwy) 

@ S-10 (E 

Home Avenue)

Urban 

Minor 

Arterial

Intersection 

geometry

Auxiliary lanes -

add left-turn 

lane

0 0 0 0 0 0 0 0 0 0 1.33

S-9 (Cypress 

Gardens Road) 

@ S-791 (Old 

Hwy 52)

Rural 

Major 

Collector

Intersection 

geometry

Auxiliary lanes -

add left-turn 

lane

0 0 0 0 0 0 0 0 0 0 0.48

US 17 

Alternate @ SC 

61 (Hwy 61) 

[West 

Intersection]

Rural 

Minor 

Arterial

Intersection 

geometry

Intersection 

geometry -

other

0 0 0 0 0 0 0 0 0 0 -0.23

US 21 (Wilson 

Boulevard) 

[Near S-83 

Hard Scrabble 

Road)]

Urban 

Minor 

Arterial

Roadside Barrier- metal 0 0 0 0 0 0 0 0 0 0 0.59

US 701 (Broad 

Street) @ SC 

410

Rural 

Minor 

Arterial

Intersection 

geometry

Intersection 

geometry -

other

0 0 0 0 0 0 0 0 0 0 0.34

US 15 (Jeffries 

Hwy) @ SC 61 

Rural 

Major 

Intersection 

geometry

Intersection 

geometry -

0 0 0 0 0 0 0 0 0 0 4.27
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(Augusta Hwy) Collector other

SC 295 

(Southport 

Road) @ 

Dogwood Club 

Road

Urban 

Principal 

Arterial -

Other

Intersection 

geometry

Intersection 

geometry -

other

0 0 0 0 0 0 0 0 0 0 44.8

S-146 (MP 2.9 

to 3.2) (Gray 

Mare Hollow 

Road)

Rural 

Major 

Collector

Alignment Horizontal 

curve 

realignment

0 0 0 0 0 0 0 0 0 0 41.08

US 17 

Alternate @ SC 

61 (Beech Hill 

Road) [East 

Intersection]

Rural 

Minor 

Arterial

Intersection 

geometry

Intersection 

geometry -

other

0 0 0 0 0 0 0 0 0 0 9.85

SC 421 

(Augusta Road) 

@ SC 191 

(Main Street) 

& S-81 

(Howlandville 

Road)

Urban 

Minor 

Arterial

Intersection 

geometry

Intersection 

geometrics -

re-assign 

existing lane 

use

0 0 0 0 0 0 0 0 0 0 5.76

SC 9 Business 

@ SC 410 & SC 

917

Rural 

Major 

Collector

Intersection 

geometry

Intersection 

geometrics -

realignment to 

align offset 

0 0 0 0 0 0 0 0 0 0 0.79
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cross streets

S-111 (Ott 

Road) @ Adger 

Road

Urban 

Principal 

Arterial -

Other

Intersection 

geometry

Intersection 

geometrics -

realignment to 

align offset 

cross streets

0 0 0 0 0 0 0 0 0 0 3.09

S-15 (George 

Rogers 

Boulevard) @ 

S-727 (Shop 

Road)

Urban 

Minor 

Arterial

Intersection 

geometry

Intersection 

geometry -

other

0 0 0 0 0 0 0 0 0 0 31.5

S-424 (Rabon 

Road) @ S1293 (Flora 

Road)

Urban 

Collector

Intersection 

geometry

Intersection 

geometrics -

modify skew 

angle

0 0 0 0 0 0 0 0 0 0 3.96

SC 14 @ S-23 

(Metric Road)

Rural 

Major 

Collector

Intersection 

geometry

Auxiliary lanes -

add left-turn 

lane

0 0 0 0 0 0 0 0 0 0 1.18

SC 6 (Hwy 6/ W 

Main Street) @ 

S-315 (Old 

Whitesville 

Road) & S-16 

(Cooper Store 

Road)

Rural 

Minor 

Arterial

Intersection 

geometry

Auxiliary lanes -

add left-turn 

lane

0 0 0 0 0 0 0 0 0 0 41.39
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US 76/301 

(Palmetto 

Street) @ S354 (Dargan 

Street)

Urban 

Principal 

Arterial -

Other

Intersection 

geometry

Auxiliary lanes -

add left-turn 

lane

0 0 0 0 0 0 0 0 0 0 1.57

S-29 (N Cashua 

Drive) @ S-63 

(Mechanicsville 

Road) & S-342 

(N Douglas 

Street)

Urban 

Minor 

Arterial

Intersection 

geometry

Auxiliary lanes -

add left-turn 

lane

0 0 0 0 0 0 0 0 0 0 2.15

SC 14 (SE Main 

Street) @ S660 

(Richardson 

Street/ W 

Fernwood 

Road)

Urban 

Principal 

Arterial -

Other

Intersection 

geometry

Auxiliary lanes -

add left-turn 

lane

0 0 0 0 0 0 0 0 0 0 4.37
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Optional Attachments

Sections Files Attached
2013 South Carolina Highway Safety Improvement Program

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Glossary

5 year rolling average means the average of five individual, 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. 

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.