Iowa 2007 Five Percent Report
This report is in response to the Federal requirement that each state describe at least 5 percent of its locations currently exhibiting the most severe highway safety needs, in accordance with Sections 148(c)(1)(D) and 148(g)(3)(A), of Title 23, United States Code. Each state's report is to include potential remedies to the hazardous locations identified; estimated costs of the remedies; and impediments to implementation of the remedies other than costs. The reports included on this web site represent a variety of methods utilized and various degrees of road coverage. Therefore, this report cannot be compared with the other reports included on this Web site.
Protection from Discovery and Admission into Evidence—Under 23 U.S.C. 148(g)(4) information collected or compiled for any purpose directly relating to this report 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. |
Additional information, including the specific legislative requirements, can be found in the guidance provided by the Federal Highway Administration,
http://safety.fhwa.dot.gov/safetealu/fiveguidance.htm.
IOWA'S 5 PERCENT SAFETY REPORT
September 2007
Background
Section 1401 of the Safe, Accountable, Flexible, Efficient Transportation Equity Act: A Legacy for Users (SAFETEA-LU) amended Section 148 of Title 23 USC to create a new Highway Safety Improvement Program (HSIP) as a "core" Federal Highway Administration program with separate funding. The purpose of the HSIP is to reduce traffic fatalities and serious injuries on public roads. As part of the new HSIP, states are required to submit an annual report describing not less than 5 percent of their highway locations exhibiting the most severe safety needs. The intent of this provision is to raise the public awareness of the highway safety needs and challenges in the states.
This report must include an assessment of:
- potential remedies to hazardous locations identified;
- estimated costs associated with remedies; and
- impediments to implementation other than cost.
Discussion
Highway crashes are very complex. Contributing factors can include a roadway's design, pavement conditions (e.g. rain, snow and ice), a vehicle's mechanical condition (e.g. tires, brakes, lights), a driver's behavior (e.g. speeding, inattentiveness and seat belt usage), as well as the driver's condition (e.g. alcohol use, age-related conditions, physical impairment). In fact, the driver's behavior and condition factors are the primary cause in an estimated 67 percent of highway crashes and a contributing factor in an estimated 95 percent of all crashes.
As such, highway safety needs go beyond just physical improvements to a specific roadway or intersection, and include changes to driver behavior. These are best addressed with a multi-disciplinary approach using engineering, enforcement, emergency response, and education strategies.
Iowa's most severe safety needs
Based on an analysis of Iowa's 2001-2005 fatal and major injury crashes, Iowa's most severe safety needs are related to crashes involving:
- intersections;
- single vehicles running off the road;
- vehicles crossing the medians on freeways;
- unbelted drivers and passengers;
- impaired drivers; and
- speeding.
The analysis following this discussion identifies the 5 percent of Iowa's most severe safety needs in each of the areas listed above.
Historically the Iowa DOT's intersection "Safety Candidate List" identified the 200 highest ranked intersections relative to crash history. Iowa's 5 percent most severe intersection safety needs are the highest 5 percent of these intersections. There are more than 100,000 miles of public roads in Iowa. Candidate roadway safety projects are the 5,000 miles of roadway with the greatest crash history. Therefore, Iowa's 5 percent most severe corridor safety needs are 5 percent of this 5,000 miles.
Proposed Improvements and Schedules
In establishing engineering, education, enforcement, and emergency response priorities, state agencies consider factors beyond those depicted in this report.
For instance, decisions regarding any roadway or intersection improvements are based on detailed engineering studies that consider the strategies most appropriate for site-specific conditions, as well as the cost and anticipated effectiveness of those improvements. Scheduling of these improvements is also contingent upon the availability of highway safety improvement funds.
The following pages detail Iowa's most severe 5 percent safety needs identified in 2006 and the current status of each project. The 2008 report will include a new analysis of these project categories. These new analysis will be based on seven years of crash data (2001 - 2007) rather than 5 years.
UNBELTED DRIVERS/PASSENGERS CRASHES -- RURAL PRIMARY ROADS (2001-2005)
| COUNTY | ROUTE | DESCRIPTION | LENGTH (MILES) | FATALITIES AND MAJOR INJURIES INVOLVING AN UNBELTED DRIVER/PASSENGER | ANNUAL UNBELTED FATALITY AND MAJOR INJURY DENSITY (CRASHES/MI/YR) | Potential Remedies (1) | Estimated Costs (2) | Impediments Other Than Cost (3) | Status |
|---|---|---|---|---|---|---|---|---|---|
| CASS | INTERSTATE 80 | POTTAWATTAMIE COUNTY TO ADAIR COUNTY | 23.28 | 15 | 0.129 | Targeted enforcement and media coverage completed on 8-06 and 8-07. | |||
| MUSCATINE | U.S. 61 | LOUISA COUNTY TO SCOTT COUNTY, EXCLUDING CITY OF MUSCATINE | 18.21 | 10 | 0.110 | Targeted enforcement and media coverage completed on 6-06 and 7-07. | |||
| DUBUQUE | U.S. 20 | DELAWARE COUNTY TO CITY OF DUBUQUE, EXCLUDING CITY OF DYERSVILLE | 19.02 | 10 | 0.105 | Targeted enforcement and media coverage completed on 7-06 and 7-07. | |||
| ADAIR | INTERSTATE 80 | CASS COUNTY TO MADISON COUNTY | 23.56 | 12 | 0.102 | Targeted enforcement and media coverage completed on 8-06 and 8-07. | |||
| CLARKE | INTERSTATE 35 | DECATUR COUNTY TO WARREN COUNTY | 18.19 | 9 | 0.099 | Targeted enforcement and media coverage completed on 8-06 and 8-07. | |||
| DALLAS | IOWA 141 | GUTHRIE COUNTY TO POLK COUNTY, EXCLUDING CITY OF PERRY | 24.44 | 12 | 0.098 | Local enforcement and State Patrol have been notified. | |||
| WASHINGTON | U.S. 218 | HENRY COUNTY TO JOHNSON COUNTY | 23.84 | 11 | 0.092 | Targeted enforcement and media project completed on 3-06 and 3-07. | |||
| DALLAS | INTERSTATE 80 | MADISON COUNTY TO CITY OF WEST DES MOINES | 20.29 | 9 | 0.089 | Targeted enforcement and media coverage completed on 8-06 and 8-07. Paved shoulders from IA 92 north to county line installed in 2007. | |||
| APPANOOSE | IOWA 5 | MISSOURI STATE LINE TO MONROE COUNTY, EXCLUDING CITY OF CENTERVILLE | 23.15 | 10 | 0.086 | Paved shoulders, rumble strips and centerline rumble strips installed in 2007. | |||
| UNION | U.S. 34 | ADAMS COUNTY TO CLARKE COUNTY, EXCLUDING CITY OF CRESTON | 23.87 | 10 | 0.084 | Targeted enforcement and media coverage completed on 5-06 and 5-07. | |||
| PLYMOUTH | U.S. 75 | SIOUX CITY METROPOLITAN AREA (~325TH ST) TO SIOUX COUNTY, EXCLUDING CITY OF LE MARS | 21.74 | 9 | 0.083 | Local enforcement and State Patrol have been notified. | |||
| TOTAL | 239.59 |
SITE SELECTION CRITERIA:
FIVE PERCENT OF THE 5,000 MILES WITH THE HIGHEST AVERAGE ANNUAL FATAL AND MAJOR INJURY CRASH DENSITY OF UNBELTED DRIVERS/PASSENGERS DURING 2001 - 2005
(STATEWIDE AVERAGE = 0.023 FATAL AND MAJOR INJURY CRASHES/MILE/YEAR)
Footnotes:
(1) Potential remedies include:
public awareness and education; and
increased seat belt enforcement in these corridors.
(2) The estimated cost is unknown and variable. Identification of these corridors provides an opportunity for state and local enforcement agencies to target
corridors for additional seat belt use enforcement using existing staff and funding resources. Providing funding for additional
enforcement will be considered.
(3) Reduction in enforcement officers due to budget constraints and military call up of staff
IMPAIRED DRIVER CRASHES* -- RURAL PRIMARY ROADS (2001-2005)
| COUNTY | ROUTE | DESCRIPTION | LENGTH (MILES) | FATAL AND MAJOR INJURY CRASHES INVOLVING AN IMPAIRED DRIVER* | ANNUAL IMPAIRED DRIVER INVOLVED FATAL AND MAJOR INJURY CRASH DENSITY (CRASHES/MI/YR) | Potential Remedies (1) | Estimated Costs (2) | Impediments Other than Costs (3) | Status |
|---|---|---|---|---|---|---|---|---|---|
| MUSCATINE | U.S. 61 | LOUISA COUNTY TO SCOTT COUNTY, EXCLUDING CITY OF MUSCATINE | 18.21 | 7 | 0.077 | Targeted enforcement and media coverage completed on 6-06 and 7-07. Multi-disciplinary corridor study will be performed in late 2007, | |||
| WINNESHIEK | IOWA 24 | CHICKASAW COUNTY TO CITY OF CALMAR | 13.51 | 5 | 0.074 | ||||
| DUBUQUE | U.S. 20 | DELAWARE COUNTY TO CITY OF DUBUQUE, EXCLUDING CITY OF DYERSVILLE | 19.02 | 6 | 0.063 | Targeted enforcement and media coverage completed on 7-06 and 7-07. | |||
| DES MOINES | U.S. 61 | LEE COUNTY TO LOUISA COUNTY, EXCLUDING CITY OF BURLINGTON | 22.59 | 6 | 0.053 | Targeted enforcement and media coverage completed on 6-06 and 7-07. | |||
| IOWA | INTERSTATE 80 | POWESHIEK COUNTY TO JOHNSON COUNTY | 23.74 | 6 | 0.051 | Paved shoulders and cable barrier to be installed in 2008. Targeted enforcement and media coverage completed on 8-06 and 8-07. | |||
| UNION | U.S. 34 | ADAMS COUNTY TO CLARKE COUNTY, EXCLUDING CITY OF CRESTON | 23.87 | 6 | 0.050 | Paved shoulders, rumble strips and centerline rumble strips installed in 2007. Targeted enforcement and media coverage completed on 5-06 and 5-07. | |||
| CLAYTON | U.S. 18 | FAYETTE COUNTY TO CLAYTON COUNTY | 24.15 | 6 | 0.050 | Paved shoulders, rumble strips completed in 2007. | |||
| HAMILTON | IOWA 17 | BOONE COUNTY TO WRIGHT COUNTY, EXCLUDING CITY OF WEBSTER CITY | 23.12 | 5 | 0.043 | ||||
| JOHNSON | IOWA 1 | WASHINGTON COUNTY TO LINN COUNTY, EXCLUDING CITY OF IOWA CITY | 24.79 | 5 | 0.040 | Paved shoulders, rumble strips and intersection improvements programmed in 2009. | |||
| MAHASKA | U.S. 63 | WAPELLO COUNTY TO POWESHIEK COUNTY, EXCLUDING CITY OF OSKALOOSA | 25.03 | 5 | 0.040 | ||||
| DUBUQUE | U.S. 52 | JACKSON COUNTY TO CLAYTON COUNTY, EXCLUDING CITY OF DUBUQUE | 28.64 | 5 | 0.035 | Multi-disciplinary corridor study will be performed in late 2007. | |||
| Total | 246.67 |
* BAC>0, alcohol test refused, drug test positive, drug test refused or driver condition classified as under the influence of alcohol/drugs/medication
SITE SELECTION CRITERIA:
FIVE PERCENT OF THE 5,000 MILES WITH THE HIGHEST AVERAGE ANNUAL FATAL AND MAJOR INJURY CRASH DENSITY INVOLVING AN IMPAIRED DRIVER DURING 2001 - 2005
(STATEWIDE AVERAGE = 0.011 FATAL AND MAJOR INJURY CRASHES/MILE/YEAR)
Footnotes: (1) Potential Remedies include: public awareness; and increased corridor monitoring by enforcement officers.
(2) The estimated cost is unknown and variable. Identification of these corridors provides an opportunity for state and local enforcement agencies to increase monitoring of driver behavior within these corridors using existing staff and funding resources. Providing funding for additional enforcement will be considered.
(3) Reduction in enforcement officers due to budget constraints and military call up of staff. Other enforcement responsibilities.
SPEED RELATED CRASHES* -- RURAL EXPRESSWAYS AND TWO-LANE PRIMARY ROADS (2001-2005)
| COUNTY | ROUTE | DESCRIPTION | LENGTH (MILES) | SPEED-RELATED* FATAL AND MAJOR INJURY CRASHES | ANNUAL SPEED-RELATED FATAL AND MAJOR INJURY CRASH DENSITY (CRASHES/MI/YR) | Potential Remedies (1) | Estimated Costs (2) | Impediments Other Than Costs (3) | Status |
|---|---|---|---|---|---|---|---|---|---|
| LINN | U.S. 151 | BENTON COUNTY TO JONES COUNTY, EXCLUDING CITIES OF FAIRFAX, CEDAR RAPIDS AND MARION | 12.03 | 10 | 0.166 | Local enforcement and State Patrol have been notified. | |||
| SCOTT | U.S. 61 | MUSCATINE COUNTY TO CLINTON COUNTY, EXCLUDING CITIES OF DAVENPORT AND ELDRIDGE | 12.17 | 9 | 0.148 | Targeted enforcement and media coverage completed on 6-06 and 7-07. | |||
| MARION | IOWA 163 | MAHASKA COUNTY TO JASPER COUNTY | 14.32 | 10 | 0.140 | ||||
| MUSCATINE | U.S. 61 | LOUISA COUNTY TO SCOTT COUNTY, EXCLUDING CITY OF MUSCATINE | 18.21 | 12 | 0.132 | Targeted enforcement and media coverage completed on 6-06 and 7-07 | |||
| WASHINGTON | U.S. 218 | HENRY COUNTY TO JOHNSON COUNTY | 23.84 | 15 | 0.126 | Targeted enforcement and media coverage completed on 3-06 and 3-07. Paved shoulders from IA 92 N to county line completed in 2007. | |||
| LEE | U.S. 61 | CITY OF KEOKUK TO DES MOINES COUNTY, EXCLUDING CITY OF FORT MADISON | 21.13 | 13 | 0.123 | Targeted enforcement and media coverage completed on 6-06 and 7-07 | |||
| DALLAS | U.S. 6 | CITY OF DE SOTO TO CITY OF WAUKEE, EXCLUDING CITY OF ADEL | 10.06 | 6 | 0.119 | ||||
| WINNESHIEK | IOWA 139 | HOWARD COUNTY TO MINNESOTA STATE LINE | 11.15 | 6 | 0.108 | ||||
| DUBUQUE | U.S. 20 | DELAWARE COUNTY TO CITY OF DUBUQUE, EXCLUDING CITY OF DYERSVILLE | 19.02 | 10 | 0.105 | Targeted enforcement and media coverage completed on 7-06 and 7-07. | |||
| BOONE | U.S. 30 | GREENE COUNTY TO STORY COUNTY, EXCLUDING CITY OF BOONE | 21.61 | 10 | 0.093 | Targeted enforcement and media coverage completed on 7-06 and 7-07. Paved shoulders from US 169 to Story county line completed in 2006. | |||
| JOHNSON | U.S. 6 | IOWA COUNTY TO MUSCATINE COUNTY, EXCLUDING CITIES OF TIFFIN, CORALVILLE AND IOWA CITY | 15.58 | 7 | 0.090 | ||||
| JASPER | IOWA 163 | MARION COUNTY TO POLK COUNTY | 15.71 | 7 | 0.089 | ||||
| WAPELLO | U.S. 63 | DAVIS COUNTY TO MAHASKA COUNTY, EXCLUDING CITY OF OTTUMWA | 20.26 | 9 | 0.089 | ||||
| WAPELLO | U.S. 34 | MONROE COUNTY TO JEFFERSON COUNTY, EXCLUDING CITY OF OTTUMWA | 20.35 | 9 | 0.088 | Targeted enforcement and media coverage completed on 5-06 and 5-07. | |||
| JASPER | U.S. 6 | CITY OF NEWTON TO POWESHIEK COUNTY | 13.57 | 6 | 0.088 | ||||
| TOTAL | 249.01 |
* Driver contributing circumstances: exceeded authorized speed, driving too fast for conditions, lost control, followed too close or over correcting/over steering
SITE SELECTION CRITERIA:
FIVE PERCENT OF THE 5,000 MILES WITH THE HIGHEST AVERAGE ANNUAL FATAL AND MAJOR INJURY CRASH DENSITY FOR SPEED-RELATED CRASHES DURING 2001 - 2005
(STATEWIDE AVERAGE = 0.029 FATAL AND MAJOR INJURY CRASHES/MILE/YEAR)
Footnotes:
(1) Potential Remedies include:
public awareness;
increased speed enforcement in the corridors; and
improved signing at curves
(2) The estimated cost is unknown and variable. Identification of these corridors provides an opportunity for state and local enforcement agencies to target these corridors for additional speed enforcement using existing staff and funding resources. Providing funding for additional enforcement will be considered.
(3) Reduction in enforcement officers due to budget constraints and military call up of staff and other enforcement responsibilities.
SINGLE VEHICLE RUN-OFF-THE-ROAD CRASHES -- RURAL, PRIMARY AND PAVED SECONDARY ROADS (2001-2005)
| COUNTY | ROUTE | ROAD NAME | FROM | TO | LENGTH (MILES) | FATAL AND MAJOR INJURY SINGLE VEHICLE RUN-OFF-ROAD CRASHES | ANNUAL FATAL AND MAJOR INJURY SINGLE VEHICLE RUN-OFF-ROAD CRASH DENSITY (CRASHES/MI/YR) | POTENTIAL REMEDIES (*) | ESTIMATED COSTS | IMPEDIMENTS OTHER THAN COST | PROGRAM FISCAL YEAR | Status/Notes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| POWESHIEK | F-29 | OLD 6 RD | INTERSECTION OF 400TH AVE | WEST CORPORATE BOUNDARY 0F VICTOR, IA | 2.29 | 4 | 0.350 | 2 | (**) | |||
| ALLAMAKEE | IOWA 76 | IOWA/MINNESOTA STATE LINE | NORTH CORPORATE BOUNDARY OF WAUKON, IA | 17.87 | 4 | 0.313 | 1 | $1,800,000 | None | 2009 | ||
| CERRO GORDO | B-20 | 300TH ST | INTERSECTION OF U.S. 65 | 305TH ST | 3.01 | 4 | 0.266 | 2 | (**) | West curves and bridge funded with FY08 TSF*. East curves studied and applied for FY09 TSF*. | ||
| WAPELLO | U.S. 34 | EAST CORPORATE BOUNDARY OF OTTUMWA | WEST CORPORATE BOUNDARY OF AGENCY | 3.24 | 4 | 0.247 | 3 | (**) | 2008 | The 4-lane bypass | ||
| MARION | IOWA 5 | ~ 0.4 MI WEST OF 60TH AVE | MCKIMBER ST INTERCHANGE | 5.24 | 5 | 0.191 | 1 | $1,050,000 | None | 2007 | Paved shoulders and rumble strips completed. | |
| STORY | U.S. 30 | INTERSTATE 35 | INTERSECTION OF 610TH AVE | 4.43 | 4 | 0.181 | 1 | $900,000 | None | 2007 | Paved shoulders and rumble strips completed. | |
| MAHASKA | U.S. 63 | SOUTH INTERCHANGE AT OSKALOOSA | N. INTERCHANGE AT EDDYVILLE | 6.00 | 4 | 0.175 | 1 | $1,200,000 | None | |||
| LINN | IOWA 151 | DUBUQUE RD | EAST CORPORATE BOUNDARY OF MARION | SOUTH CORPORATE BOUNDARY OF SPRINGVILLE | 4.94 | 4 | 0.162 | 1 | $1,000,000 | None | 2010 | |
| JASPER | IOWA 163 | WEST CORPORATE BOUNDARY OF PRAIRIE CITY | OLD IOWA 374 INTERCHANGE | 7.49 | 6 | 0.160 | 1 | $1,500,000 | None | |||
| LINN | E-16 | SAWYER AND WAGNER RD | East CORPORATE BOUNDARY OF CENTRAL CITY | INTERSECTION OF PRAIRIEBURG RD | 5.05 | 4 | 0.158 | 2 | (**) | |||
| DUBUQUE | U.S. 20 | SUNDOWN RD INTERCHANGE | ~ 0.2 MI INSIDE SOUTHWEST CORPORATE BOUNDARY OF DUBUQUE | 5.22 | 4 | 0.153 | 1 | $1,050,000 | None | |||
| BOONE | R-21 | NATURE RD | INTERSECTION OF W 22ND ST (NORTH CORPORATE BOUNDARY OF BOONE) | INTERSECTION OF 130TH ST | 6.54 | 5 | 0.153 | 2c | None | 2009 | Field Review completed - may not be ideal for rumble strips (pavement condition), check to update signing | |
| BOONE | U.S. 30 | EAST CORPORATE BOUNDARY OF BOONE | X AVE INTERCHANGE | 6.65 | 5 | 0.150 | 1 | $1,350,000 | None | 2006 | Paved shoulders and rumble strips completed. | |
| JASPER | U.S. 6 | EAST CORPORATE BOUNDARY OF NEWTON | INTERSECTION OF IOWA 224 | 5.53 | 4 | 0.145 | 1 | $550,000 | None | 2008 | Paved shoulders and rumble strips programmed. | |
| MUSCATINE | U.S. 61 | INTERSECTION OF TUCKER RD | ~ 0.1 MI EAST OF 153RD RD ST | 7.07 | 5 | 0.141 | 1 | $1,400,000 | None | |||
| JOHNSON | U.S. 6 | INTERSECTION OF SIOUX AVE | JOHNSON/MUSCATINE COUNTY LINE | 6.84 | 4 | 0.117 | 1 | $685,000 | None | |||
| WASHINGTON | U.S. 218/IOWA 27 | IOWA 22 INTERCHANGE | INTERSECTION OF 240TH ST | 12.21 | 7 | 0.115 | 1 | $2,450,000 | None | 2007 | Paved shoulders and rumble strips completed. | |
| MADISON | P-53 | PITZER RD | INTERSECTION OF MADISON AVE | INTERSECTION OF 190TH ST | 8.87 | 5 | 0.113 | 2 | (**) | Field Review completed - good candidate for rumble strips through reverse curves at northerly end. | ||
| WEBSTER | U.S. 20 | QUAIL AVE INTERCHANGE | WEBSTER/HAMILTON COUNTY LINE | 9.49 | 5 | 0.105 | 1 | $1,900,000 | None | |||
| BUTLER | IOWA 57 | EAST CORPORATE BOUNDARY OF PARKERSBURG | BUTLER/GRUNDY COUNTY LINE | 7.66 | 4 | 0.104 | 1 | $765,000 | None | |||
| SIOUX | B-30 | 360TH ST | IOWA/SOUTH DAKOTA STATE LINE | INTERSECTION OF ELMWOOD AVE | 7.90 | 4 | 0.101 | 2 | (**) | |||
| CLINTON | U.S. 61 | IOWA 136 INTERCHANGE | INTERSECTION OF 212TH ST | 10.23 | 5 | 0.098 | 1 | $2,050,000 | None | 2007 | Paved shoulders and rumble strips completed. | |
| BUCHANAN | W-13 | FAIRBANK-AMISH BLVD | INTERSECTION OF 100TH ST (BUCHANAN/FAYETTE COUNTY LINE) | INTERSECTION OF RIVER RD BLVD | 8.49 | 4 | 0.094 | 2c | $800,000 | None | Study completed; C57 intersection added red flashers in 2006; south end curve studied as part of "Intersection" list and applied for TSF FY 09 for shoulder widening & paving. | |
| JOHNSON | W-66 | SAND RD | INTERSECTION OF SYCAMORE ST | INTERSECTION OF IOWA 22 | 8.83 | 4 | 0.091 | 1 | $885,000 | None | ||
| HENRY | X-23 | RACINE AVE | SOUTH CORPORATE BOUNDARY OF MOUNT UNION | NORTHWEST CORPORATE BOUNDARY OF NEW LONDON | 8.89 | 4 | 0.090 | 2 | (**) | Primarily curve related crashes | ||
| WINNESHIEK | IOWA 139 | IOWA/MINNESOTA STATE LINE | INTERSECTION OF IOWA 9 AND POLE LINE RD | 11.15 | 5 | 0.090 | 2 | (**) | ||||
| MARION | IOWA 5 | IOWA 92 INTERCHANGE | MARION/MONROE COUNTY LINE | 13.96 | 6 | 0.086 | 1 | $1,400,000 | None | 2007 | Paved shoulders and rumble strips completed. | |
| POLK | F-70 | SE VANDALIA DR/SE 56 AVE | INTERSECTION OF SE 60 ST | INTERSECTION OF W 140TH ST (POLK/JASPER COUNTY LINE) | 11.48 | 4 | 0.070 | 2 | (**) | Field Review - good candidate for rumble strips. | ||
| ALLAMAKEE | IOWA 76 | INTERSECTION OF IOWA 9/BREEZY CORNERS RD | ALLAMAKEE/CLAYTON COUNTY LINE | 20.16 | 4 | 0.066 | 1 | $2,000,000 | None | |||
| POTTAWATTAMIE | U.S. 6 | EAST CORPORATE BOUNDARY OF COUNCIL BLUFFS | SOUTH CORPORATE BOUNDARY OF OAKLAND | 19.95 | 6 | 0.060 | 1 | $2,000,000 | None | |||
| TOTAL | 256.67 | * TSF - State funded safety program |
Poweshiek R-57 and F-29 also reviewed
SITE SELECTION CRITERIA:
FIVE PERCENT OF THE 5,000 MILES WITH THE HIGHEST AVERAGE ANNUAL FATAL AND MAJOR INJURY SINGLE VEHICLE RUN-OFF-THE-ROAD CRASH DENSITY DURING 2001-2005
(STATEWIDE AVERAGE = .0.14 CRASHES/MILE/YEAR)
Footnotes:
* Potential Remedies
(1) Paving a part of the shoulder and installing shoulder rumble strips
(2) Study needed. Alternatives include:
a. Paving a part of the shoulder and installing shoulder rumble strips
b. Installing rumble strips along the edge of the pavement
c. Widen the shoulder
(3) Upgrading roadway adding two-foot paved shoulders and intermittent shoulder rumble strips
Cost estimate is unknown until after study is completed.
Impediments:
(**) Possible impediments are unknown until after a study is completed. There could be environmental or right-of-way impediments, if shoulder widening is required.
MULTIPLE VEHICLE, CROSS-MEDIAN CRASHES -- RURAL INTERSTATES/FREEWAYS (2001-2005)
| COUNTY | ROAD NAME | FROM | TO | LENGTH (MILES) | MULTIPLE VEHICLE CROSS-MEDIAN CRASHES | FATAL AND MAJOR INJURY MULTIPLE VEHICLE RUN-OFF-ROAD CRASHES | ANNUAL MULTIPLE VEHICLE CROSS-MEDIAN CRASH DENSITY (CRASHES/MI/YR) | POTENTIAL REMEDIES (1) | ESTIMATED COSTS | IMPEDIMENTS OTHER THAN COST | PROGRAM FISCAL YEAR |
|---|---|---|---|---|---|---|---|---|---|---|---|
| JOHNSON/CEDAR | INTERSTATE 80 | MILEPOST 252 | ~ 0.4 MI WEST OF MILEPOST 257 (DELTA AVE.) | 4.64 | 47 | 5 | 2.025 | $700,000 | None | ||
| JOHNSON | INTERSTATE 380 | MILEPOST 5 | MILEPOST 10 | 5.00 | 42 | 3 | 1.680 | $750,000 | None | 2012 | |
| CEDAR | INTERSTATE 80 | ~ 0.4 MI WEST OF MILEPOST 257 (DELTA AVE.) | ~ 0.4 MI WEST OF MILEPOST 262 | 5.00 | 34 | 3 | 1.359 | $750,000 | None | 2012 | |
| JOHNSON | INTERSTATE 80 | MILEPOST 247 | MILEPOST 252 | 5.00 | 32 | 2 | 1.280 | $750,000 | None | ||
| CEDAR | INTERSTATE 80 | ~ 0.4 MI WEST OF MILEPOST 262 | IOWA 38 INTERCHANGE (~ MILEPOST 267) | 5.00 | 32 | 4 | 1.279 | $750,000 | None | ||
| IOWA | INTERSTATE 80 | IOWA 149 INTERCHANGE (MILEPOST 220) | U.S. 151 INTERCHANGE (MILEPOST 225) | 5.00 | 31 | 2 | 1.240 | $750,000 | None | 2009 | |
| POLK/STORY | INTERSTATE 35 | IOWA 210 INTERCHANGE | ~ 0.2 MI NORTH OF MILEPOST 98 | 4.57 | 28 | 2 | 1.224 | $700,000 | None | 2008 | |
| CEDAR | INTERSTATE 80 | IOWA 38 INTERCHANGE (~ MILEPOST 267) | ~ 0.6 MI EAST OF MILEPOST 271 | 5.00 | 29 | 7 | 1.160 | $750,000 | None | 2010 | |
| JASPER | INTERSTATE 80 | MILEPOST 160 | MILEPOST 165 | 5.00 | 28 | 2 | 1.120 | $750,000 | None | 2012 | |
| JOHNSON | INTERSTATE 380/U.S. 218 | ~ 0.44 MI SOUTH OF MILEPOST 95 (U.S. 218) | MILEPOST 1 (INTERSTATE 380) | 3.47 | 19 | 2 | 1.096 | $525,000 | None | ||
| POWESHIEK/IOWA | INTERSTATE 80 | ~ 0.35 MI WEST OF MILEPOST 205 | ~ 0.2 MI WEST OF MILEPOST 210 | 5.14 | 27 | 3 | 1.050 | $775,000 | None | ||
| SCOTT | INTERSTATE 80 | ~ 0.1 MI EAST OF MILEPOST 286 | INTERSTATE 280 INTERCHANGE (MILEPOST 290) | 4.00 | 21 | 2 | 1.049 | $600,000 | None | ||
| JOHNSON | INTERSTATE 80 | MILEPOST 230 | MILEPOST 235 | 5.00 | 23 | 3 | 0.920 | $750,000 | None | ||
| Total | 61.84 |
SITE SELECTION CRITERIA:
FIVE PERCENT OF TOTAL RURAL INTERSTATE AND FREEWAY MILEAGE WITH THE HIGHEST RATE OF CROSS-MEDIAN CRASHES/MILE/YEAR DURING 2001-2005
(STATEWIDE AVERAGE = 0.420 CRASHES/MILE/YEAR)
Footnotes:
(1) Median, high tension cable barrier to be considered for all locations
RURAL EXPRESSWAY INTERSECTIONS CRASHES - HIGHEST NUMBER OF FATAL AND MAJOR INJURY CRASHES (2001-2005)
| COUNTY | LOCATION | Five-year Crash Frequency | Five-year Severity Values | Potential Remedies (1) | Estimated Costs (1) | Impediments (1) | Program Fiscal Year | Construction Year | Status/Notes | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fatal and major | Fatal | Major Injury | Minor Injury | Other | Total | Fatalities and Major Injuries | Fatalities | Major Injuries | Minor Injuries | Other | ||||||||
| Scott | U.S. 61 & Co Rd Y-48 (1 mile west of Davenport) | 6 | 0 | 6 | 1 | 18 | 25 | 8 | 0 | 8 | 2 | 13 | Signal Improvements | $85,000 | FY09 TSF* application received for change in signal phasing and advance signal warning. | |||
| Muscatine | U.S. 61 & Hershey Ave (Muscatine) | 6 | 3 | 3 | 5 | 14 | 25 | 7 | 3 | 4 | 7 | 9 | Interchange | $5.4 M | None | 2007 | 2007-08 | |
| Floyd | U.S. 18 & Co Rd T-24 (1.5 miles west of Rudd) | 5 | 0 | 5 | 3 | 13 | 21 | 9 | 0 | 9 | 5 | 16 | Eliminate Skew | $448,862 | FY07 TSF* project. Project improvement is under development. | |||
| Black Hawk | U.S. 218 & Co Rd C-57/Cedar-Wapsi Rd W (1.5 miles south of Janesville) | 5 | 1 | 4 | 5 | 22 | 32 | 7 | 1 | 6 | 10 | 15 | 2006 | Left turn median acceleration lane added to intersecton. | ||||
| Washington | U.S. 218 & Co Rd G-36 (3 miles north of Ainsworth) | 4 | 0 | 4 | 2 | 19 | 25 | 5 | 0 | 5 | 4 | 4 | Interchange | $2.90 | 2008 | Interchange to be constructed. | ||
| Linn | U.S. 151/Dubuque Rd & Co Rd X-20 (Springville) | 4 | 1 | 3 | 0 | 13 | 17 | 4 | 1 | 3 | 6 | 7 | Under Study | |||||
| Jasper | U.S. 65/IOWA 330 & U.S. 65/IOWA 117 | 3 | 2 | 1 | 3 | 5 | 11 | 7 | 2 | 5 | 3 | 4 | Under Study | |||||
| Henry | U.S. 34 & 260th St (west access to New London) | 3 | 1 | 2 | 1 | 3 | 7 | 7 | 1 | 6 | 3 | 4 | Under Study | |||||
| Washington | U.S. 218 & 305th St (Crawfordsville) | 3 | 0 | 3 | 1 | 1 | 5 | 5 | 0 | 5 | 4 | 0 | Under Study | |||||
| Henry | U.S. 34 & Co Rd X-30 (east access to New London) | 3 | 1 | 2 | 1 | 1 | 5 | 5 | 1 | 4 | 2 | 2 | Offset Rt. Turn lane | 2008 | ||||
| * TSF - State funded safety program | ||||||||||||||||||
SELECTION CRITERIA:
FIVE PERCENT OF THE 200 EXPRESSWAY INTERSECTIONS WITH THE HIGHEST NUMBER OF FATAL AND MAJOR INJURY CRASHES DURING 2001-2005
TIES WERE THEN RANKED BY NUMBER OF PEOPLE WHO DIED OR RECEIVED A MAJOR INJURY, THEN BY THE NUMBER OF PEOPLE RECEIVING MINOR INJURIES
Footnote:
(1) Unless noted, a traffic safety study, including alternative analysis and local input, is required before potential remedies, cost estimates and impediments can be determined
(2) Iowa DOT investigating new innovative alternative which will require cross traffic and left turning vehicles from side road to turn right and make a median U-turn
URBAN INTERSECTION CRASHES HIGHEST NUMBER OF FATAL AND MAJOR INJURY CRASHES (2001-2005)
| County | City | Location | 2001-2005 crash frequency | severity rates | Potential Remedies (1) | Estimated Costs (1) | Impediments (1) | Program Fiscal Year | Status/Notes | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fatal and Major | Fatal | Major Injury | Minor Injury | Other | Total | Fatalities and Major Injuries | Fatalities | Major Injuries | Minor Injuries | Other | ||||||||
| Woodbury | Sioux City | I-29 & U.S. 77 (southwest ramp intersection) | 7 | 0 | 7 | 10 | 86 | 103 | 11 | 0 | 11 | 20 | 63 | Interchange Modification | Active Planning Study | |||
| Scott | Davenport | U.S.61/Harrison St & Locust St | 7 | 1 | 6 | 14 | 61 | 82 | 7 | 1 | 6 | 20 | 29 | 2 | Safety review completed. City changed signal timing in 2006 to help with southbound progression. | |||
| Polk | Clive | U.S. 6/Hickman Rd & 128th St | 6 | 0 | 6 | 6 | 27 | 39 | 9 | 0 | 9 | 9 | 11 | Signal Phasing & extend turn lanes | $62,000 | Safety review completed; Applied for FY09 TSF* for protected lefts and longer turn bays. | ||
| Polk | Des Moines | Tuttle St & 8th St/SW 8th St | 6 | 0 | 6 | 5 | 21 | 32 | 7 | 0 | 7 | 10 | 13 | Add signals | $300,000 | 2009 | FY09 TSF* Application | |
| Scott | Davenport | U.S. 6/Kimberly Rd & U.S. 61/Welcome Way | 5 | 0 | 5 | 8 | 94 | 107 | 7 | 0 | 7 | 14 | 30 | 2 | Safety review completed. City has changed the signal timing. | |||
| Black Hawk | Cedar Falls | IA 27/IA 58 & Viking Rd | 5 | 0 | 5 | 7 | 36 | 48 | 7 | 0 | 7 | 11 | 18 | 2 | Safety review completed - no feasible or prudent alternative per city staff. Multi-disciplinary safety audit proposed for 2008. | |||
| Polk | Des Moines | SW 9th St & Kenyon Ave | 5 | 1 | 4 | 3 | 25 | 33 | 7 | 1 | 6 | 3 | 22 | 5-lane Roadway | 2 | Safety review completed. 5-lane roadway proposed, but not feasible due to right of way impact. | ||
| Scott | Davenport | Utica Ridge Rd & E 53rd St | 5 | 0 | 5 | 5 | 38 | 48 | 6 | 0 | 6 | 7 | 22 | 2 | Safety review completed. City changed left-turning to activate with one car. If necessary city will change to protected only lefts. | |||
| Scott | Davenport | U.S. 61/Welcome Way & 53rd St | 5 | 0 | 5 | 9 | 46 | 60 | 5 | 0 | 5 | 17 | 27 | 2 | Safety review completed. TSF* project constructed turn lanes. City has changed signal timing. | |||
| Polk | Des Moines | U.S. 6/Douglas Ave & 38th St | 5 | 0 | 5 | 9 | 36 | 50 | 5 | 0 | 5 | 15 | 21 | Traffic signals | 150,000 | 2005 | Completed | |
| * TSF - State funded safety program | ||||||||||||||||||
SELECTION CRITERIA:
FIVE PERCENT OF THE 200 URBAN INTERSECTIONS WITH THE HIGHEST NUMBER OF FATAL AND MAJOR CRASHES DURING 2001-2005
TIES WERE RANKED BY NUMBER OF PEOPLE WHO DIED OR RECEIVED A MAJOR INJURY, THEN BY THE NUMBER OF PEOPLE RECEIVING MINOR INJURIES
Footnotes:
(1) Unless noted, a traffic safety study, including alternative analysis and local input, is required before potential remedies, cost estimates and impediments can be determined
(2) Restricted Right-of-way
RURAL TWO-LANE INTERSECTION CRASHES HIGHEST NUMBER OF FATAL AND MAJOR INJURY CRASHES (2001-2005)
| County | Location | 2001-2005 Crash Frequency | Severity | Potential Remedies (1) | Estimated Costs (1) | Impediments (1) | Program Fiscal Year | Construction Year | Status/Notes | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Fatal and Major | Fatal | Major Injury | Minor Injury | Other | Total | Fatalities and Major Injuries | Fatalities | Major Injuries | Minor Injuries | Other | ||||||||
| Iowa | Co Rd F-67 & Co Rd W-38 | 4 | 1 | 3 | 1 | 3 | 8 | 5 | 1 | 4 | 5 | 8 | Add Beacons | $25,600 | Study Completed; FY09 TSF* application received for intersection beacons. | |||
| Black Hawk | IOWA 281 & Co Rd V-49 | 4 | 1 | 3 | 2 | 3 | 9 | 4 | 1 | 3 | 5 | 2 | Roundabout | $600,000 | None | 2008 | 2008 | TSF* funds being used. |
| Sioux | Co Rd K-42 & 410th St | 3 | 0 | 3 | 0 | 1 | 4 | 4 | 0 | 4 | 0 | 0 | Stop Signs installed | Safety Review Completed; being addressed by county | ||||
| Buchanan | Co Rd C-57 & Co Rd V-62 | 3 | 2 | 1 | 0 | 8 | 11 | 3 | 2 | 1 | 2 | 8 | 2006 | FY06 Installed dual stop signs, 2 per approach with red flashing lights above signs. FY07 Installing brighter red flashing lights. | ||||
| Buchanan | Co Rd W-13 & 170th St | 3 | 2 | 1 | 0 | 3 | 6 | 3 | 2 | 1 | 0 | 0 | Widen and Pave Shoulders | $125,370 | 2009 | Study completed; FY 09 TSF* application to widen and pave shoulders through curve. | ||
| Buchanan | IOWA 150/JAMESTOWN AVE & IOWA 150/170th St (south curve) | 3 | 1 | 2 | 0 | 2 | 5 | 3 | 1 | 2 | 0 | 1 | Paved Shoulders | $200,000 | None | 2005 | 2006 | |
| * TSF - State funded safety program | ||||||||||||||||||
SELECTION CRITERIA:
FIVE PERCENT OF THE 200 RURAL TWO-LANE HIGHWAY INTERSECTION WITH THE HIGHEST NUMBER OF FATAL AND MAJOR CRASHES DURING 2001-2005 (MINIMUM OF THREE FATAL AND MAJOR INJURY CRASHES)
TIES WERE RANKED BY NUMBER OF PEOPLE WHO DIED OR RECEIVED A MAJOR INJURY, THEN BY THE NUMBER OF PEOPLE RECEIVING MINOR INJURIES
Footnote:
(1) Unless noted, a traffic safety study, including alternative analysis and local input, is required before potential remedies, cost estimates and impediments can be determined
