Idaho

Highway Safety Improvement Program

2016 Annual Report

Prepared by: ID
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

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

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

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

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

Program Methodology......................................................................................................................... 4

Progress in Implementing Projects........................................................................................................... 6

Funds Programmed.......................................................................................................................... 6

General Listing of Projects ............................................................................................................... 9

Progress in Achieving Safety Performance Targets................................................................................. 21

Overview of General Safety Trends.................................................................................................... 21

Application of Special Rules............................................................................................................... 35

Assessment of the Effectiveness of the Improvements (Program Evaluation)......................................... 36

SHSP Emphasis Areas......................................................................................................................... 38

Groups of similar project types.......................................................................................................... 42

Systemic Treatments......................................................................................................................... 43

Glossary ................................................................................................................................................ 50
2016 Idaho Highway Safety Improvement Program

1

2. Executive Summary

Highway safety is one of the primary objectives of the Idaho Transportation Department (ITD). The 

Highway Safety Improvement Program (HSIP) is comprised of projects proposed by the ITD Districts and 

the Local Highway Technical Assistance Council (LHTAC). They are selected based upon highway safety 

data and align with the Strategic Highway Safety Plan (SHSP) fulfilling the requirements defined by the 

Fixing America's Surface Transportation Act (FAST). The SHSP outlines strategies to reduce traffic 

fatalities and serious injuries through projects specified in the HSIP, providing a standard way to 

evaluate progress on a regular basis. 

The Idaho Transportation Department (ITD) continues to work on enhancing the Highway Safety 

Improvement Program (HSIP) for all public roadways in Idaho. ITD uses data from the Highway Safety 

Corridor Analysis (HSCA) to identify high priority corridors. ITD has started using the Transportation 

Economic Development Impact System (TREDIS) to evaluate HSIP eligibility for all projects nominated for 

FY20 and beyond. At the local level, work continues by the Idaho Local Highway Technical Advisory 

Council (LHTAC) to plan and prioritize highway safety projects at the local level. LHTAC continues to 

enhance their process based on the fatal and serious injuries to determine what jurisdiction have 

priority for HSIP funding.

Finally, ITD continues the use of HSIP funds for the behavior programs. This is an effective use of the 

money as Idaho continues to balance the safety program by utilizing the contributions of engineering, 

education, enforcement and emergency response. 
2016 Idaho 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 MAP21 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

3. How are Highway Safety Improvement Program funds administered in the State? 

Central

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

The Local Highway Technical Assistance Council works with ITD to address the safety of the Idaho local 

roads. LHTAC also uses the HSIP funding from the FHWA. These funds are dedicated for use on local 

safety projects. LHTAC provides a recommended project list. The projects are reviewed and approved 

by the FHWA using PSS.

Determine Funding Split (ITD & LHTAC)

Through FY19 LHTAC received approximately $3.9M for Local HSIP projects. For funding FY20 and 

beyond, ITD and LHTAC will review the data together to determine the appropriate funding split based 

on the total number of Fatal (K) plus Serious Injury (A) crashes. The percentage of K+A Crashes on local 

roads will equal the funding split between ITD and LHTAC. The current approved funding split for FY20 

and FY21 is 50%.

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

Other-Office of Highway Safety

Other-Transportation Planning

Other-ITD District Offices

Other-Transportation Systems

6. Briefly describe coordination with internal partners. 
2016 Idaho Highway Safety Improvement Program

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ITD's Office of Highway safety produces the Highway Safety Corridor Analysis (HSCA) and the High Crash 

Location (HAL) reports on an annual basis.

Each district uses these reports and other tools to develop potential projects. Once a project is 

proposed, the districts put together a Project Charter that meets FAST eligibility requirements to be 

considered for funding. An acceptable charter must include a Project Objective Statement (POS) and 

a Scope of Work clearly identified to support HSIP funds. It also must include a timeline with realistic 

start and finish dates. Most importantly the charter must include an appropriate HSIP justification 

that addresses the following:

1. How is the project safety-driven?

• Base Answers upon the Strategic Highway Safety Plan.

• Site statistics and results such as the basis of crash experience, crash potential, 

crash rate, or other data-supported means.

2. How does the project align with and help implement the strategies found in the 

Strategic Higheay Safety Plan?

• Pinpoint safety problems either through a site analysis or systematic approach;

• Identify counter measures to address those problems;

• Priortize projects for implementation; and

• Evaluate projects to determine their effectiveness

3. How does the project eliminate death and serious injury?

• Address identified safety issues within a highway wsafety corridor or a spot 

location such as an intersection or High Accident Location (HAL) or does it incorporate 

a system-wide approach such as rumble strips.

• Each district has a corridor map outlining safety corridors (also known as the 

Highway Safety Corridor Analysis (HSCA)). Make sure to review these maps for 

pertinent system-wide safety corridor analysis.

All project evaluations are based upon the information that has been entered in PSS and the Office of 

Transportation Information System (OTIS). The projects are prioritized by the Economics Office and 

Transportation Systems using the TREDIS process. TREDIS calculates benefits in safety and mobility as a 

result of a project, including economic value that can be realized related to transportation and the 

mobility it affords to the citizens and businesses of the state of Idaho.

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

Other-Local Highway Technical Assistance Council-representing all local highway districts

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

the last reporting period.

Other-ITD has started using the Transportation Economic Deployment Impact System to evaluate HSIP 

eligibility for all projects nominated for FY20 and beyond. The emphasis will be on projects that reduce 

fatal and serious injury crashes.
2016 Idaho Highway Safety Improvement Program

4

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

would like to elaborate.

Below is an excerpt from Idaho's HSIP Standard Planning Process document.

The foundation of consistency within the HSIP process is completing a project charter for each project. 

The charter contains information that can be used to consistently compare projects against each other 

and provide details needed for analysis in TREDIS. Another important aspect of the HSIP program is 

specified justification which is necessary for the Federal Highway Administration – Idaho (FHWA-ID) to 

assess the funding eligibility of the proposed projects. The project must be focused on reduction of 

fatalities and serious injuries.

Program Methodology

10. Select the programs that are administered under HSIP. 

Local Safety Other-Highway Safety Corridor

11. Program: Local Safety

Date of Program Methodology: 1/1/2014

 

What data types were used in the program methodology? 

Crashes Exposure Roadway

Fatal and serious injury crashes 

only

What project identification methodology was used for this program? 

Crash frequency

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

Yes

If yes, are local road projects identified using the same methodology as state roads?

No

If no, describe the methodology used to identify local road projects as part of this program.

They look for areas that have multiple fatal and serious injury crashes and have the local agencies apply 

for funding

How are highway safety improvement projects advanced for implementation?

Competitive application process
2016 Idaho Highway Safety Improvement Program

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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 1

Available funding 2

11. Program: Other-Highway Safety Corridor

Date of Program Methodology: 1/1/2013

 

What data types were used in the program methodology? 

Crashes Exposure Roadway

All crashes Volume

What project identification methodology was used for this program? 

Crash frequency

Crash rate

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

No

How are highway safety improvement projects advanced for implementation?

Competitive application process

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 1

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

30%

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

improvements?

Rumble Strips
2016 Idaho Highway Safety Improvement Program

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Install/Improve Signing

Install/Improve Pavement Marking and/or Delineation

Upgrade Guard Rails

Add/Upgrade/Modify/Remove Traffic Signal

13. What process is used to identify potential countermeasures? 

Engineering Study

Road Safety Assessment

Other-Highway Safety Corridor Analysis process

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

the last reporting period.

Other-No real changes since last reporting period

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

you would like to elaborate. 

This past year, ITD modified the worksheet created by LHTAC and has used it for submitting projects. It 

allows the districts to include the CMF's and construction costs as well as the crash data. A benefit/cost 

ratio is automatically determined for the safety aspect of the project. I think that having the districts fill 

out the worksheet made them more conscientious of how the various project types can impact safety. 

Progress in Implementing Projects

Funds Programmed

16. Reporting period for Highway Safety Improvement Program funding.

Federal Fiscal Year

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

Funding Category Programmed* Obligated
2016 Idaho Highway Safety Improvement Program

7

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

$4,066,335.00

How much funding is obligated to local safety projects?

$3,582,625.00

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

$0.00

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

$388.00

20. 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

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

overcome this in the future.

At this time there are no impediments to obligating HSIP funds. 

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

progress on which you would like to elaborate.

Amount Percentage Amount Percentage

HSIP (Section 148) $18,902,686.00 100 % $13,634,610.78 100 %

Totals $18,902,686.00 100% $13,634,610.78 100%
2016 Idaho Highway Safety Improvement Program

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The collaboration at ITD with the various departments is making the HSIP a more effective safety 

program as well as estimating the overall impact of projects on both safety and mobility. The local 

agencies are now implementing projects and will continue to receive money from the HSIP for their 

safety projects. These projects have ranged from specific intersections or segments to a more systemic 

approach. Targeting both the State system and the local roads will help improve safety throughout 

Idaho.
2016 Idaho Highway Safety Improvement Program

9

General Listing of Projects

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

Project Improvement Category Output HSIP 

Cost

Total 

Cost

Fundi

ng 

Categ

ory

Functiona

l 

Classificat

ion

AAD

T

Spe

ed

Roadwa

y 

Owners

hip

Relationship to 

SHSP

Emphasis 

Area

Strate

gy

US 95, 

WINDFALL 

PASS 

CURVE, 

BENEWAH 

CO

Alignment Horizontal 

curve realignment

0.5 Miles 75000

0

25740

00

HSIP 

(Secti

on 

148)

Rural 

Principal 

Arterial -

Other

301

5

60 State 

Highwa

y 

Agency

Lane 

Departur

e

SH 41, JCT 

SH 53 TO JCT 

US 2, SPIRIT 

LAKE

Alignment Alignment -

other

31.158 Miles 10155

40

14695

40

HSIP 

(Secti

on 

148)

Rural 

Minor 

Arterial

401

3

0 State 

Highwa

y 

Agency

Lane 

Departur

e

SH 5, ST 

MARIES RV 

RR 

UNDERPASS, 

BENEWAH 

CO

Alignment Alignment -

other

0.07899999999

99988 Miles

13062

61

16371

17

HSIP 

(Secti

on 

148)

Rural 

Minor 

Arterial

220

0

45 State 

Highwa

y 

Agency

Lane 

Departur

e

STC-1846, 

CINDER 

BUTTE 

CURVES 

ROAD EDGE, 

BINGHAM C

Roadway Roadway -

other

2.785 Miles 11869

6

17569

6

HSIP 

(Secti

on 

148)

Rural 

Major 

Collector

420 0 County 

Highwa

y 

Agency

Roadway 

Departur

e
2016 Idaho Highway Safety Improvement Program

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SMA-7276, 

SOUTH BLVD 

CORRIDOR 

RRFB LIGHT, 

IDAHO F

Pedestrians and 

bicyclists Pedestrian 

signal

1.953 Miles 13224

9

16224

9

HSIP 

(Secti

on 

148)

Urban 

Minor 

Arterial

762

0

0 City of 

Municip

al 

Highwa

y 

Agency

Pedestria

ns

US 12, 18TH 

ST TO 

CLEARWATE

R RV BR, 

LEWISTON

Roadway Pavement 

surface - miscellaneous

0.449 Miles 40000

0

27529

40

HSIP 

(Secti

on 

148)

Urban 

Principal 

Arterial -

Other

185

97

35 State 

Highwa

y 

Agency

Lane 

Departur

e

SMA-7563, 

OVERLAND 

RD & VISTA 

AVE 

LIGHTING, 

ACHD

Lighting Lighting - other 0.06200000000

00012 Miles

47300 15630

0

HSIP 

(Secti

on 

148)

Urban 

Minor 

Arterial

940

0

0 County 

Highwa

y 

Agency

Intersecti

ons

US 93, 200 

SOUTH RD, 

JEROME CO

Intersection geometry 

Intersection geometry -

other

2.069 Miles 75000 68700

00

HSIP 

(Secti

on 

148)

Rural 

Principal 

Arterial -

Other

806

0

55 State 

Highwa

y 

Agency

Intersecti

ons

STC-7117, 

9TH ST; 

BONNEVILLE

/ PED XINGS, 

IDAHO FAL

Pedestrians and 

bicyclists Crosswalk

0.29 Miles 38000 19300

0

HSIP 

(Secti

on 

148)

Urban 

Major 

Collector

310

0

0 City of 

Municip

al 

Highwa

y 

Agency

Intersecti

ons

SH 16, INT 

BEACON 

LIGHT RD

Intersection traffic 

control Intersection 

traffic control - other

0 Miles 50000 15690

00

HSIP 

(Secti

on 

148)

Rural 

Principal 

Arterial -

Other

805

7

65 State 

Highwa

y 

Agency

Intersecti

ons

SMA-7555, 

INT MULLAN 

Intersection geometry 

Intersection geometrics 

0 Miles 56499 14110

8

HSIP 

(Secti

Urban 

Minor 

160

00

0 City of 

Municip

Intersecti

ons
2016 Idaho Highway Safety Improvement Program

11

AVE &

IDAHO ST, 

POST FALLS

-

miscellaneous/other/un

specified

on 

148)

Arterial al 

Highwa

y 

Agency

STP-7073, 

COLE RD; 

SPECTRUM 

TO CENTURY 

WAY 

MEDIANS

Intersection geometry 

Intersection geometry -

other

0.26 Miles 60000 24700

0

HSIP 

(Secti

on 

148)

Urban 

Principal 

Arterial -

Other

280

00

0 County 

Highwa

y 

Agency

Intersecti

ons

STP-7316, 

INT HOLMES 

AVE & ELVA 

ST, IDAHO 

FALLS

Intersection geometry 

Intersection geometry -

other

0 92000 46500

0

HSIP 

(Secti

on 

148)

Urban 

Principal 

Arterial -

Other

125

00

0 City of 

Municip

al 

Highwa

y 

Agency

Intersecti

ons

SMA-7274, 

INT 

HANKINS & 

ADDISON 

AVE SIGNAL, 

TWIN F

Intersection geometry 

Intersection geometry -

other

0 97000 57400

0

HSIP 

(Secti

on 

148)

Urban 

Minor 

Arterial

340

0

0 City of 

Municip

al 

Highwa

y 

Agency

Intersecti

ons

SH 39, INT 

SHEEP TRAIL 

RD, 

BINGHAM 

CO

Intersection geometry 

Intersection geometry -

other

0 10000

0

12350

00

HSIP 

(Secti

on 

148)

Rural 

Minor 

Arterial

168

3

60 State 

Highwa

y 

Agency

Intersecti

ons

SMA-7166, 

LOMAX & F 

ST FLASHING 

STOP SIGNS, 

IDAHO 

Intersection geometry 

Intersection geometry -

other

0.967 Miles 12748

8

15048

8

HSIP 

(Secti

on 

148)

Urban 

Minor 

Arterial

605

0

0 State 

Highwa

y 

Agency

Intersecti

ons

US 93, 500 Intersection geometry 0 18800 91124 HSIP Rural 114 55 State Intersecti
2016 Idaho Highway Safety Improvement Program

12

SOUTH RD, 

JEROME CO

Intersection geometry -

other

0 0 (Secti

on 

148)

Principal 

Arterial -

Other

46 Highwa

y 

Agency

ons

US 20, INT 

SH 47 

IMPROVEME

NTS

Intersection geometry 

Intersection geometry -

other

0 20000

0

10000

00

HSIP 

(Secti

on 

148)

Rural 

Principal 

Arterial -

Other

468

9

45 State 

Highwa

y 

Agency

Intersecti

ons

STC-7571, 

MERKLEY &

TANNER LN 

INT 

IMPROVEME

NTS

Intersection geometry 

Intersection geometry -

other

0 22944

1

28444

1

HSIP 

(Secti

on 

148)

Urban 

Major 

Collector

170

0

0 State 

Highwa

y 

Agency

Intersecti

ons

SH 55, INT 

KARCHER RD 

& INDIANA 

AVE, 

CANYON CO

Intersection geometry 

Intersection geometry -

other

0 22840

11

39478

41

HSIP 

(Secti

on 

148)

Urban 

Principal 

Arterial -

Other

133

61

55 State 

Highwa

y 

Agency

Intersecti

ons

STC-4715, 

CLEAR CR RD 

GUARDRAIL, 

IDAHO CO

Roadside Barrier- metal 11.507 Miles 50000 30900

0

HSIP 

(Secti

on 

148)

Rural 

Major 

Collector

284 0 County 

Highwa

y 

Agency

Roadway 

Departur

e

US 20, CAT 

CR SUMMIT 

TO BENNETT 

MT RD

Roadside Barrier- metal 1.173 Miles 61000 12070

00

HSIP 

(Secti

on 

148)

Rural 

Principal 

Arterial -

Other

159

6

65 State 

Highwa

y 

Agency

Roadway 

Departur

e

STC-5829, 

RIVERVIEW 

DR 

GUARDRAIL 

INSTALLATIO

N, POS

Roadside Barrier- metal 4.79 Miles 10200

0

44800

0

HSIP 

(Secti

on 

148)

Rural 

Major 

Collector

238

0

0 City of 

Municip

al 

Highwa

y 

Agency

Roadway 

Departur

e

STC-5810, Roadside Barrier- metal 3.10000000000 10578 13278 HSIP Rural 480 0 County Roadway 
2016 Idaho Highway Safety Improvement Program

13

COW CR RD 

GUARDRAIL, 

BOUNDARY 

CO

001 Miles 9 9 (Secti

on 

148)

Major 

Collector

Highwa

y 

Agency

Departur

e

OFFSYS, E 

CANYON RD 

GUARDRAIL, 

EASTSIDE 

HD #3

Roadside Barrier- metal 8.722 Miles 19654

7

24454

7

HSIP 

(Secti

on 

148)

Rural 

Minor 

Collector

382 0 Other 

Local 

Agency

Roadway 

Departur

e

STATE, FY18 

D5 

GUARDRAIL; 

POCATELLO 

TO INKOM

Roadside Barrier- metal 0 12936

36

13036

36

HSIP 

(Secti

on 

148)

variable 

functional 

classificati

ons

0 0 State 

Highwa

y 

Agency

Roadway 

Departur

e

STATE, FY16 

D3 

GUARDRAIL 

UPGRADE

Roadside Barrier- metal 0 20988

00

22606

10

HSIP 

(Secti

on 

148)

variable 

functional 

classificati

ons

0 0 State 

Highwa

y 

Agency

Roadway 

Departur

e

SH 6, OLD 

POTLATCH 

MILL RD TO 

PRINCETON 

FLATS

Roadway Roadway 

widening - travel lanes

1.77 Miles 12500

0

18050

00

HSIP 

(Secti

on 

148)

Rural 

Major 

Collector

199

6

55 State 

Highwa

y 

Agency

Lane 

Departur

e

OFFSYS, 

RIVER RD; 

BEDROCK 

RD TO 

RAILROAD 

AVE, NEZ 

Roadway Roadway 

widening - travel lanes

0 31000 69000 HSIP 

(Secti

on 

148)

Rural 

Local 

Road or 

Street

0 0 County 

Highwa

y 

Agency

Lane 

Departur

e

STC-6820, 

CEDRON RD 

SHOULDER 

WIDENING, 

Shoulder treatments 

Widen shoulder - paved 

or other

3.5 Miles 50000 39100

0

HSIP 

(Secti

on 

148)

Rural 

Major 

Collector

299 0 Other 

Local 

Agency

Roadway 

Departur

e
2016 Idaho Highway Safety Improvement Program

14

TETON CO

OFFSYS, 

WEBB RIDGE 

RD; WEBB 

RD TO FLAT 

IRON RD

Roadway Roadway 

widening - travel lanes

0 59381 15060

1

HSIP 

(Secti

on 

148)

Rural 

Local 

Road or 

Street

0 0 Other 

State 

Agency

Lane 

Departur

e

US 95, 

CULDESAC 

CANYON 

PASSING 

LANE. 

PHASE 2

Roadway Install / 

remove / modify 

passing zone

2.5 Miles 60000 46080

00

HSIP 

(Secti

on 

148)

Rural 

Principal 

Arterial -

Other

340

0

65 State 

Highwa

y 

Agency

Lane 

Departur

e

OFFSYS, BYU 

CROSSWALK

S, REXBURG

Pedestrians and 

bicyclists Crosswalk

0 5000 57000 HSIP 

(Secti

on 

148)

Rural 

Local 

Road or 

Street

0 0 City of 

Municip

al 

Highwa

y 

Agency

Lane 

Departur

e

LOCAL, FY17 

DURABLE 

PAVEMENT 

MARKINGS, 

BONNER CO

Roadway delineation 

Improve 

retroreflectivity

0 5000 12700

0

HSIP 

(Secti

on 

148)

variable 

functional 

classificati

ons

0 0 County 

Highwa

y 

Agency

Lane 

Departur

e

STC-5711, ST 

JOE RV RD; 

DURABLE PV 

MARKINGS, 

SHOSH

Roadway delineation 

Improve 

retroreflectivity

22.374 Miles 52000 35600

0

HSIP 

(Secti

on 

148)

Rural 

Major 

Collector

434 0 County 

Highwa

y 

Agency

Lane 

Departur

e

SH 45, 12TH 

AVE S; 

SHERMAN 

TO DEWEY 

BEACONS, 

Miscellaneous 0.14399999999

9998 Miles

57000 29100

0

HSIP 

(Secti

on 

148)

Urban 

Principal 

Arterial -

Other

237

94

35 State 

Highwa

y 

Agency

Lane 

Departur

e
2016 Idaho Highway Safety Improvement Program

15

NAMPA

SH 45, 12TH 

AVE S; 10TH 

ST S TO 

12TH ST S, 

NAMPA

Miscellaneous 0.14200000000

0003 Miles

57000 29100

0

HSIP 

(Secti

on 

148)

Urban 

Principal 

Arterial -

Other

250

96

35 State 

Highwa

y 

Agency

Lane 

Departur

e

LOCAL, 

DURABLE 

PAVEMENT 

MARKINGS, 

BONNER CO

Roadway delineation 

Improve 

retroreflectivity

0 14029

3

14029

3

HSIP 

(Secti

on 

148)

variable 

functional 

classificati

ons

0 0 County 

Highwa

y 

Agency

Lane 

Departur

e

STC-5745, E 

FERNAN 

LAKE RD 

SAFETY 

IMPROVEME

NTS

Roadway delineation 

Roadway delineation -

other

5.295 Miles 22896

6

29096

6

HSIP 

(Secti

on 

148)

Rural 

Minor 

Collector

552 0 Other 

Local 

Agency

Lane 

Departur

e

I 15, 

FY15/16 D6 

PAVEMENT 

STRIPING

Roadway delineation 

Roadway delineation -

other

84.84 Miles 33000

0

10502

22

HSIP 

(Secti

on 

148)

Rural 

Principal 

Arterial -

Interstate

562

2

75 State 

Highwa

y 

Agency

Lane 

Departur

e

LOCAL, FY16 

LHTAC PREPROJECT 

PLANNING

Miscellaneous 0 35000 20000

0

HSIP 

(Secti

on 

148)

variable 

functional 

classificati

ons

0 0 Other 

Local 

Agency

Data

STC-5742, 

COUGAR 

GULCH RD 

SAFETY 

AUDIT, 

WORLEY HD

Miscellaneous 5.661 Miles 37711 37711 HSIP 

(Secti

on 

148)

Rural 

Major 

Collector

510 0 Other 

Local 

Agency

Data

US 20, JCT 

SH 75, 

Miscellaneous 0 13400

0

13400

0

HSIP 

(Secti

Rural 

Principal 

122

1

65 State 

Highwa

Intersecti

ons
2016 Idaho Highway Safety Improvement Program

16

TIMMERMA

N STUDY

on 

148)

Arterial -

Other

y 

Agency

I 90, 

GOVERNME

NT WAY 

UPASS, 

COEUR 

D'ALENE

Miscellaneous 0.30000000000

0001 Miles

10000

0

86250

0

HSIP 

(Secti

on 

148)

Urban 

Principal 

Arterial -

Interstate

336

42

65 State 

Highwa

y 

Agency

Lane 

Departur

e

STC-6764, 

500 N RD 

SAFETY 

AUDIT, 

FREMONT 

CO

Miscellaneous 2.43299999999

999 Miles

37000 37000 HSIP 

(Secti

on 

148)

Rural 

Major 

Collector

0 0 Other 

Local 

Agency

Data

STC-2765, 

BOB 

BARTON RD 

& 100S RD 

SFTY IMP, 

JEROME

Miscellaneous 5.394 Miles 52622 56622 HSIP 

(Secti

on 

148)

Rural 

Major 

Collector

165

5

0 Other 

Local 

Agency

Intersecti

ons

STC-7116, N 

CAPITAL AVE 

& ELM ST 

SAFETY 

AUDIT, ID 

Miscellaneous 1.031 Miles 53000 53000 HSIP 

(Secti

on 

148)

Urban 

Major 

Collector

773

9

0 County 

Highwa

y 

Agency

Intersecti

ons

OFFSYS, 

EUREKA 

RIDGE AREA 

SAFETY IMP, 

CLEARWATE

R 

Miscellaneous 0 78000 78000 HSIP 

(Secti

on 

148)

variable 

functional 

classificati

ons

0 0 Other 

Local 

Agency

Lane 

Departur

e

STC-3805, 

SIMCO RD 

Roadway delineation 

Roadway delineation -

10.085 Miles 3000 33000 HSIP 

(Secti

Rural 

Major 

730 0 City of 

Municip

Roadway 

Departur
2016 Idaho Highway Safety Improvement Program

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DELINEATOR

S, 

MOUNTAIN 

HOME HD

other on 

148)

Collector al 

Highwa

y 

Agency

e

OFFSYS, 

INTERSECTI

ON & SIGN 

IMPROVEME

NTS, 

HILLSDAL

Roadway signs and 

traffic control Roadway 

signs and traffic control 

- other

0 5000 52000 HSIP 

(Secti

on 

148)

Rural 

Local 

Road or 

Street

0 0 Other 

Local 

Agency

Intersecti

ons

STC-4717, 

GREENCREE

K RD SIGNS 

& BEACONS, 

GREENCREE

Roadway signs and 

traffic control Roadway 

signs and traffic control 

- other

3.241 Miles 5000 41000 HSIP 

(Secti

on 

148)

Rural 

Major 

Collector

620 0 Other 

Local 

Agency

Lane 

Departur

e

OFFSYS, 

SIGN 

IMPROVEME

NTS AT 4 

CURVES, 

WENDELL 

HD

Roadway signs and 

traffic control Roadway 

signs and traffic control 

- other

0 5000 19000 HSIP 

(Secti

on 

148)

Rural 

Local 

Road or 

Street

0 0 Other 

Local 

Agency

Roadway 

Departur

e

STC-4771, 

CAVENDISH 

HWY SIGNS 

& 

DELINEATOR

S, CLEA

Roadway signs and 

traffic control Roadway 

signs and traffic control 

- other

14.341 Miles 5000 41000 HSIP 

(Secti

on 

148)

Rural 

Major 

Collector

430 0 County 

Highwa

y 

Agency

Intersecti

ons

LOCAL, 

INTERSECTI

ON SIGN & 

MARKING 

UPGRADES, 

KELLO

Roadway signs and 

traffic control Roadway 

signs and traffic control 

- other

0 5000 46000 HSIP 

(Secti

on 

148)

Rural 

Local 

Road or 

Street

0 0 City of 

Municip

al 

Highwa

y 

Agency

Intersecti

ons
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OFFSYS, 

INTERSECTI

ON & SIGN 

IMPROVEME

NTS, 

JEROME H

Roadway signs and 

traffic control Roadway 

signs and traffic control 

- other

0 5000 32000 HSIP 

(Secti

on 

148)

Rural 

Local 

Road or 

Street

0 0 County 

Highwa

y 

Agency

Intersecti

ons

LOCAL, 

SIGNING &

DELINEATIO

N, EASTSIDE 

HD

Roadway signs and 

traffic control Roadway 

signs and traffic control 

- other

0 5000 48000 HSIP 

(Secti

on 

148)

Rural 

Local 

Road or 

Street

0 0 Other 

Local 

Agency

Roadway 

Departur

e

STATE, FY16 

D4 SIGN 

UPGRADES

Roadway signs and 

traffic control Roadway 

signs and traffic control 

- other

0 74692 12415

2

HSIP 

(Secti

on 

148)

variable 

functional 

classificati

ons

0 0 State 

Highwa

y 

Agency

Lane 

Departur

e

OFFSYS, 

CANYON CR 

RD 

SHOULDERS 

& SIGNING, 

MTN HOME

Roadway signs and 

traffic control Roadway 

signs and traffic control 

- other

1 Miles 23500

4

33733

6

HSIP 

(Secti

on 

148)

Rural 

Minor 

Collector

80 0 City of 

Municip

al 

Highwa

y 

Agency

Roadway 

Departur

e

STC-4804, 

ROBINSON 

PK RD SIGNS 

& 

ELEVATION, 

N LATA

Roadway signs and 

traffic control Roadway 

signs and traffic control 

- other

3.8 Miles 46692

1

46692

1

HSIP 

(Secti

on 

148)

Rural 

Major 

Collector

645 0 Other 

Local 

Agency

Roadway 

Departur

e

SMA-7086, 

INT BELLIN 

& 

GRANDVIEW 

ELEVATION, 

IDAHO 

Shoulder treatments 

Shoulder treatments -

other

0 10713

8

15413

8

HSIP 

(Secti

on 

148)

Urban 

Minor 

Arterial

500

0

0 City of 

Municip

al 

Highwa

y 

Agency

variable 

functional 

classificati

ons
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NHS-3761, 

NORTHSIDE 

BLVD 

SIGNAL, NR 

NAMPA

Intersection traffic 

control Intersection 

traffic control - other

4.62 Miles 43000 29100

0

HSIP 

(Secti

on 

148)

Rural 

Principal 

Arterial -

Other

0 0 Other 

Local 

Agency

Intersecti

ons

SH 55, INT 

MIDWAY 

RD, NR 

NAMPA

Intersection traffic 

control Intersection 

traffic control - other

0.63999999999

9999 Miles

15500

0

50950

00

HSIP 

(Secti

on 

148)

Urban 

Principal 

Arterial -

Other

133

61

55 State 

Highwa

y 

Agency

Intersecti

ons

SMA-8323, 

GREENHURS

T RD 

SIGNALS, 

NAMPA

Intersection traffic 

control Intersection 

traffic control - other

1.505 Miles 34554

7

40454

7

HSIP 

(Secti

on 

148)

Urban 

Minor 

Arterial

106

96

0 City of 

Municip

al 

Highwa

y 

Agency

Intersecti

ons

STATE, FY16 

D6 SIGNALS 

UPGRADE

Intersection traffic 

control Intersection 

traffic control - other

0 21601

18

22101

18

HSIP 

(Secti

on 

148)

variable 

functional 

classificati

ons

0 0 State 

Highwa

y 

Agency

Intersecti

ons

US 95, JCT 

SH 6 

TURNBAY, 

LATAH CO

Roadway Roadway -

other

0.71499999999

9975 Miles

60000 12100

00

HSIP 

(Secti

on 

148)

Rural 

Principal 

Arterial -

Other

444

4

60 State 

Highwa

y 

Agency

Lane 

Departur

e

SMA-7071, 

POLE LINE 

RD; 

ALAMEDA 

TO QUINN, 

POCATELL

Roadway Roadway -

other

0.988 Miles 60000 29200

0

HSIP 

(Secti

on 

148)

Urban 

Minor 

Arterial

139

67

0 City of 

Municip

al 

Highwa

y 

Agency

Lane 

Departur

e

US 20, 

INTERSECTI

ON 

IMPROVEME

Roadway Roadway -

other

0 90000 71000

0

HSIP 

(Secti

on 

148)

Urban 

Principal 

Arterial -

Other

109

35

55 State 

Highwa

y 

Agency

Intersecti

ons
2016 Idaho Highway Safety Improvement Program

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NTS

US 95, 

ELMIRA RD 

TURNBAY, 

BONNER CO

Roadway Roadway -

other

0.30000000000

0011 Miles

10000

0

72500

0

HSIP 

(Secti

on 

148)

Rural 

Principal 

Arterial -

Other

700

0

60 State 

Highwa

y 

Agency

Intersecti

ons

SH 6, 

FLANNIGAN 

CR, N & S SH 

9 TURNBAYS

Roadway Roadway -

other

0.211 Miles 14000

0

11900

00

HSIP 

(Secti

on 

148)

Rural 

Major 

Collector

394

1

35 State 

Highwa

y 

Agency

Intersecti

ons

US 91, INT 

HANSEN LN, 

BLACKFOOT

Roadway Roadway -

other

0 14200

0

83400

0

HSIP 

(Secti

on 

148)

Urban 

Principal 

Arterial -

Other

400

0

55 State 

Highwa

y 

Agency

Intersecti

ons

SH 39, 

TREGO RD, 

LEFT TURN 

LANE EB, 

BINGHAM 

CO

Roadway Roadway -

other

0 32520

5

65665

0

HSIP 

(Secti

on 

148)

Urban 

Principal 

Arterial -

Other

590

6

55 State 

Highwa

y 

Agency

Intersecti

ons

STP-7316, 

INT HOLMES 

AVE & 1ST 

ST, IDAHO 

FALLS

Roadway Roadway -

other

0 38874

3

45274

3

HSIP 

(Secti

on 

148)

Urban 

Principal 

Arterial -

Other

120

00

0 City of 

Municip

al 

Highwa

y 

Agency

Intersecti

ons

SH 5, 4TH ST 

TO JCT SH 3, 

ST MARIES

Roadway Roadway -

other

0.14000000000

0001 Miles

10880

88

23181

18

HSIP 

(Secti

on 

148)

Rural 

Minor 

Arterial

549

9

25 State 

Highwa

y 

Agency

Intersecti

ons
2016 Idaho Highway Safety Improvement Program

21

Progress in Achieving Safety Performance Targets

Overview of General Safety Trends

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

Performance Measures* 2011

(5-yr avg)

2012

(5-yr avg)

2013

(5-yr avg)

2014

(5-yr avg)

2015

(5-yr avg)

Number of fatalities 217.2 203.6 200 192 193.4

Number of serious injuries 1479.4 1375.6 1327.4 1302.2 1293.2

Fatality rate (per HMVMT) 1.4 1.31 1.28 1.22 1.21

Serious injury rate (per HMVMT) 10.07 9.53 8.88 8.5 8.31

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

Year - 2015

Function 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 - INTERSTATE

24.2 95.8 1.05 4.16

RURAL PRINCIPAL 

ARTERIAL - OTHER

41.2 191.8 1.84 8.59

RURAL MINOR 

ARTERIAL

20.2 99.2 2.21 10.89

RURAL MINOR 

COLLECTOR

6.4 34.6 2.63 14.38

RURAL MAJOR 

COLLECTOR

34 142.2 2.61 10.93

RURAL LOCAL ROAD OR 

STREET

28.2 87.4 1.24 3.85

URBAN PRINCIPAL 

ARTERIAL - INTERSTATE

5.4 55.8 0.38 3.99

URBAN PRINCIPAL 

ARTERIAL - OTHER

18 285 0.8 12.69

URBAN MINOR 

ARTERIAL

8.6 188 0.74 15.54

URBAN MAJOR 

COLLECTOR

2.8 54.6 0.42 8.21

URBAN LOCAL ROAD 

OR STREET

4.2 60.6 0.49 7.11
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Year - 2015

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

STATE HIGHWAY AGENCY 111.6 616.2 1.3 7.16

ALL LOCAL OWNERSHIP 81.8 684.2 1.11 9.27
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26. Describe any other aspects of the general highway safety trends on which you would like to 

elaborate.

Like many states, Idaho is experiencing a slight increase in fatalities and serious injuries. I am sure, in 

part, it is due to low gas prices and an improved economy. Idaho continues to look for new ways to 

enhance safety on the roadways through engineering and through changes in behavior.

Application of Special Rules

27. Present the rate of traffic fatalities and serious injuries per capita for drivers and pedestrians 65 

years of age and older.

Older Driver

Performance Measures

2010

(5-yr avg)

2011

(5-yr avg)

2012

(5-yr avg)

2013

(5-yr avg)

2014

(5-yr avg)

Fatality rate (per capita) 0.2 0.17 0.13 0.12 0.12

Serious injury rate (per 

capita)

0.68 0.57 0.48 0.46 0.46

Fatality and serious injury 

rate (per capita)

0.88 0.74 0.61 0.59 0.58

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

2014

(F+SI 2014 Drivers and Pedestrians 65 years of age and older/2014 Population Figure)+ (F+SI 

2013 Drivers and Pedestrians 65 years of age and older/2013 Population Figure*) + (F+SI 2012 

Drivers and Pedestrians 65 years of age and older /2012 Population Figure) + (F+SI 2011 Drivers 

and Pedestrians 65 years of age and older/2011 Population Figure) + (F+SI 2010 Drivers and 

Pedestrians 65 years of age and older/2010 Population Figure) / 5

2012

F+SI 2012 Drivers and Pedestrians 65 years of age and older /2012 Population Figure) + (F+SI 2011 

Drivers and Pedestrians 65 years of age and older/2011 Population Figure) + (F+SI 2010 Drivers and 

Pedestrians 65 years of age and older/2010 Population Figure)+ (F+SI 2009 Drivers and Pedestrians 65 

years of age and older/2009 Population Figure)+ (F+SI 2008 Drivers and Pedestrians 65 years of age and 

older/2008 Population Figure*) / 5
2016 Idaho Highway Safety Improvement Program

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28. Does the older driver special rule apply to your state? 

No

Assessment of the Effectiveness of the Improvements (Program 

Evaluation)
2016 Idaho Highway Safety Improvement Program

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

Safety Improvement Program?

Other-More collaboration between internal partners and projects moving forward at the local level

30. What significant programmatic changes have occurred since the last reporting period? 

Other-We have been improving on our benefit/cost ratio worksheet and improving the ease of which 

the districts submit projects.

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

We haven't had any significant program changes. We have been tweaking our process a bit to enhance 

efficiency. We have a draft of our HSIP planning process a guide to the HSIP. We are also working 

towards a better evaluation method of those projects previously completed using HSIP funding.
2016 Idaho Highway Safety Improvement Program

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SHSP Emphasis Areas

32. Present and describe trends in SHSP emphasis area performance measures.

Year - 2015

HSIP-related SHSP 

Emphasis Areas

Target 

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

(5-yr 

avg)

Other-2

(5-yr 

avg)

Other-3

(5-yr 

avg)

Intersections 37.6 487.6 0.23 3.13

Pedestrians 12 56 0.08 0.33

Bicyclists 1.6 45.2 0.01 0.28

Older Drivers 40.2 253.2 0.25 1.6

Motorcyclists 23.8 161.4 0.15 1.05

Work Zones 1.2 6.6 0.01 0.09

Distracted 42.8 380.2 0.27 2.57

Aggressive 72.6 623 0.45 3.98

Impaired 77.6 240.2 0.49 1.5

Youthful Driver 25.6 226.2 0.16 1.49

Commercial Driver 27.2 113.2 0.17 0.69

Single Vehicle Run off 

Road

101 398 0.63 2.48

Head On/Side Swipe 

Opposite

34.6 208.8 0.22 1.36
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Groups of similar project types
2016 Idaho Highway Safety Improvement Program

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33. Present the overall effectiveness of HSIP subprograms.

Systemic Treatments

34. Present the overall effectiveness of systemic treatments.

Year - 2015

HSIP Sub-program 

Types

Target 

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

(5-yr 

avg)

Other-2

(5-yr 

avg)

Other-3

(5-yr 

avg)

Other-Highway 

Safety Corridor

112 637.6 1.3 7.17

Year - 2015

Systemic improvement Target 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)

Other1

(5-yr 

avg)

Other2

(5-yr 

avg)

Other3

(5-yr 

avg)

Install/Improve Signing All 193.4 1303.8 1.21 8.17

Add/Upgrade/Modify/Remove 

Traffic Signal

Intersections 37.6 487.6 0.23 3.05

Upgrade Guard Rails Single Vehicle 

Run Off Road

101.2 424 0.63 2.57

Rumble Strips Single Vehicle 

Run Off Road

101.2 410 0.63 2.57

Install/Improve Pavement Marking 

and/or Delineation

Run-off-road 155.8 742.6 0.97 4.64
2016 Idaho Highway Safety Improvement Program

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

which you would like to elaborate. 

Idaho is continuing to move forward on improving the HSIP program. With a stronger focus on ensuring 

projects are safety related and have a higher cost/benefit ratio will improve the effectiveness of the 

overall program.
2016 Idaho Highway Safety Improvement Program

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Optional Attachments

Sections Files Attached
2016 Idaho 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. 

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.