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Iowa 2006 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

 

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:

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:

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.


Rural primary roads with highest fatal and major injury crash density of unbelted drivers and passengers
(Highest 5 percent based on data from 2001-2005)
COUNTYROUTEDESCRIPTIONLENGTH (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)
CASS INTERSTATE 80POTTAWATTAMIE COUNTY TO ADAIR COUNTY23.28150.129   
MUSCATINEU.S. 61LOUISA COUNTY TO SCOTT COUNTY, EXCLUDING CITY OF MUSCATINE18.21100.110   
DUBUQUEU.S. 20DELAWARE COUNTY TO CITY OF DUBUQUE, EXCLUDING CITY OF DYERSVILLE19.02100.105   
ADAIRINTERSTATE 80CASS COUNTY TO MADISON COUNTY23.56120.102   
CLARKEINTERSTATE 35DECATUR COUNTY TO WARREN COUNTY18.1990.099   
DALLASIOWA 141GUTHRIE COUNTY TO POLK COUNTY, EXCLUDING CITY OF PERRY24.44120.098   
WASHINGTONU.S. 218HENRY COUNTY TO JOHNSON COUNTY23.84110.092   
DALLASINTERSTATE 80MADISON COUNTY TO CITY OF WEST DES MOINES20.2990.089   
APPANOOSEIOWA 5MISSOURI STATE LINE TO MONROE COUNTY, EXCLUDING CITY OF CENTERVILLE23.15100.086   
UNIONU.S. 34ADAMS COUNTY TO CLARKE COUNTY, EXCLUDING CITY OF CRESTON23.87100.084   
PLYMOUTHU.S. 75SIOUX CITY METROPOLITAN AREA (~325TH ST) TO SIOUX COUNTY, EXCLUDING CITY OF LE MARS21.7490.083   
  TOTAL239.59     

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
 increase 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 agencies to target
  corridors for additional seat belt use enforcement and education using existing staff and funding resources. Seeking funding for additional
  enforcement and education efforts will be considered.
  
(3) Competing demands for current enforcement and public awareness/education staff time.

Rural primary roads with the highest fatal and major injury crash density involving an impaired driver *
(Highest 5 percent based on data from 2001-2005)
COUNTYROUTEDESCRIPTIONLENGTH (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)
MUSCATINEU.S. 61LOUISA COUNTY TO SCOTT COUNTY, EXCLUDING CITY OF MUSCATINE18.2170.077   
WINNESHIEKIOWA 24CHICKASAW COUNTY TO CITY OF CALMAR13.5150.074   
DUBUQUEU.S. 20DELAWARE COUNTY TO CITY OF DUBUQUE, EXCLUDING CITY OF DYERSVILLE19.0260.063   
DES MOINESU.S. 61LEE COUNTY TO LOUISA COUNTY, EXCLUDING CITY OF BURLINGTON22.5960.053   
IOWAINTERSTATE 80POWESHIEK COUNTY TO JOHNSON COUNTY23.7460.051   
UNIONU.S. 34ADAMS COUNTY TO CLARKE COUNTY, EXCLUDING CITY OF CRESTON23.8760.050   
CLAYTONU.S. 18FAYETTE COUNTY TO CLAYTON COUNTY24.1560.050   
HAMILTONIOWA 17BOONE COUNTY TO WRIGHT COUNTY, EXCLUDING CITY OF WEBSTER CITY23.1250.043   
JOHNSONIOWA 1WASHINGTON COUNTY TO LINN COUNTY, EXCLUDING CITY OF IOWA CITY24.7950.040   
MAHASKAU.S. 63WAPELLO COUNTY TO POWESHIEK COUNTY, EXCLUDING CITY OF OSKALOOSA25.0350.040   
DUBUQUEU.S. 52JACKSON COUNTY TO CLAYTON COUNTY, EXCLUDING CITY OF DUBUQUE28.6450.035   
  Total246.67     

* blood alcohol content greater than zero, 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:
 Increased public awareness and education and impaired-driver enforcement in these corridors.
  
(2) The estimated cost is unknown and variable. Identification of these corridors provides an opportunity for state and local agencies to increase public awareness/education and monitoring of driver behavior within these corridors using existing staff and funding resources. Seeking funding for additional enforcement and public awareness/education will be considered.
  
(3) Competing demands for current enforcement and public awareness/education staff time.

Rural expressway and two-lane primary roads with the highest fatal and major injury crash density for speed-related crashes
(Highest 5 percent based on data from 2001-2005)
COUNTYROUTEDESCRIPTIONLENGTH (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)
LINNU.S. 151BENTON COUNTY TO JONES COUNTY, EXCLUDING CITIES OF FAIRFAX, CEDAR RAPIDS AND MARION12.03100.166   
SCOTTU.S. 61MUSCATINE COUNTY TO CLINTON COUNTY, EXCLUDING CITIES OF DAVENPORT AND ELDRIDGE12.1790.148   
MARIONIOWA 163MAHASKA COUNTY TO JASPER COUNTY14.32100.140   
MUSCATINEU.S. 61LOUISA COUNTY TO SCOTT COUNTY, EXCLUDING CITY OF MUSCATINE18.21120.132   
WASHINGTONU.S. 218HENRY COUNTY TO JOHNSON COUNTY23.84150.126   
LEEU.S. 61CITY OF KEOKUK TO DES MOINES COUNTY, EXCLUDING CITY OF FORT MADISON21.13130.123   
DALLASU.S. 6CITY OF DE SOTO TO CITY OF WAUKEE, EXCLUDING CITY OF ADEL10.0660.119   
WINNESHIEKIOWA 139HOWARD COUNTY TO MINNESOTA STATE LINE11.1560.108   
DUBUQUEU.S. 20DELAWARE COUNTY TO CITY OF DUBUQUE, EXCLUDING CITY OF DYERSVILLE19.02100.105   
BOONEU.S. 30GREENE COUNTY TO STORY COUNTY, EXCLUDING CITY OF BOONE21.61100.093   
JOHNSONU.S. 6IOWA COUNTY TO MUSCATINE COUNTY, EXCLUDING CITIES OF TIFFIN, CORALVILLE AND IOWA CITY15.5870.090   
JASPERIOWA 163MARION COUNTY TO POLK COUNTY15.7170.089   
WAPELLOU.S. 63DAVIS COUNTY TO MAHASKA COUNTY, EXCLUDING CITY OF OTTUMWA20.2690.089   
WAPELLOU.S. 34MONROE COUNTY TO JEFFERSON COUNTY, EXCLUDING CITY OF OTTUMWA20.3590.088   
JASPERU.S. 6CITY OF NEWTON TO POWESHIEK COUNTY13.5760.088   
  TOTAL249.01     

* Driver contributing circumstances: exceeded authorized speed, drove too fast for conditions, lost control, followed too close or over corrected/over steered

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 and education;
  increased speed enforcement in these 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 agencies to target these corridors for additional speed enforcement and public awareness/education using existing staff and funding resources. Seeking funding for additional enforcement and public awareness/education will be considered.
  
(3) Competing demands for current enforcement and public awareness/education staff time.

Rural primary and paved secondary roads with the highest fatal and major injury crash density for single vehicle run-off-the-road crashes
(Highest 5 percent based on data from 2001-2005)
COUNTYROUTEROAD NAMEFROMTOLENGTH (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)
(1)
POTENTIAL
REMEDIES
(2)
ESTIMATED
COSTS
(3)
IMPEDIMENTS
OTHER THAN
COST
PROGRAM
FISCAL
YEAR
POWESHIEKF-29OLD 6 RDINTERSECTION OF 400TH AVEWEST CORPORATE BOUNDARY 0F VICTOR2.2940.350b **  
ALLAMAKEEIOWA 76 IOWA/MINNESOTA STATE LINENORTH CORPORATE BOUNDARY OF WAUKON17.8740.313c$1,800,000None2007
CERRO GORDOB-20300TH STINTERSECTION OF U.S. 65305TH ST3.0140.266b ** 
WAPELLOU.S. 34 EAST CORPORATE BOUNDARY OF OTTUMWAWEST CORPORATE BOUNDARY OF AGENCY3.2440.247c **2007
MARIONIOWA 5 ~ 0.4 MI WEST OF 60TH AVEMCKIMBER ST INTERCHANGE5.2450.191a$1,050,000Nonebegin 2007
STORYU.S. 30 INTERSTATE 35INTERSECTION OF 610TH AVE4.4340.181a$900,000None2007
MAHASKAU.S. 63 SOUTH INTERCHANGE AT OSKALOOSAN. INTERCHANGE AT EDDYVILLE6.0040.175a$1,200,000None 
LINNIOWA 151DUBUQUE RDEAST CORPORATE BOUNDARY OF MARIONSOUTH CORPORATE BOUNDARY OF SPRINGVILLE4.9440.162a$1,000,000None 
JASPERIOWA 163 WEST CORPORATE BOUNDARY OF PRAIRIE CITYMONROE BYPASS7.4960.160a$1,500,000None 
LINNE-16SAWYER AND WAGNER RDWEST CORPORATE BOUNDARY OF CENTRAL CITYINTERSECTION OF PRAIRIEBURG RD5.0540.158b ** 
DUBUQUEU.S. 20 SUNDOWN RD INTERCHANGE~ 0.2 MI INSIDE SOUTHWEST CORPORATE BOUNDARY OF DUBUQUE5.2240.153a$1,050,000None 
BOONER-21NATURE RDINTERSECTION OF W 22ND ST (NORTH CORPORATE BOUNDARY OF BOONE)INTERSECTION OF 130TH ST6.5450.153b None2009
BOONEU.S. 30 EAST CORPORATE BOUNDARY OF BOONEX AVE INTERCHANGE6.6550.150a$1,350,000None2006
JASPERU.S. 6 EAST CORPORATE BOUNDARY OF NEWTONINTERSECTION OF IOWA 2245.5340.145a$550,000None 
MUSCATINEU.S. 61 INTERSECTION OF TUCKER RD~ 0.1 MI EAST OF 153RD RD ST7.0750.141a$1,400,000None 
JOHNSONU.S. 6 INTERSECTION OF SIOUX AVEJOHNSON/MUSCATINE COUNTY LINE6.8440.117a$685,000None 
WASHINGTONU.S.218/IOWA 27 IOWA 22 INTERCHANGEINTERSECTION OF 240TH ST12.2170.115a$2,450,000None2007
MADISONP-53PITZER RDINTERSECTION OF MADISON AVEINTERSECTION OF 190TH ST8.8750.113b ** 
WEBSTERU.S. 20 QUAIL AVE INTERCHANGEWEBSTER/HAMILTON COUNTY LINE9.4950.105a$1,900,000None 
BUTLERIOWA 57 EAST CORPORATE BOUNDARY OF PARKERSBURGBUTLER/GRUNDY COUNTY LINE7.6640.104a$765,000None 
SIOUXB-30360TH STIOWA/SOUTH DAKOTA STATE LINEINTERSECTION OF ELMWOOD AVE7.9040.101b ** 
CLINTONU.S. 61 IOWA 136 INTERCHANGEINTERSECTION OF 212TH ST10.2350.098a$2,050,000None2007
BUCHANANW-13FAIRBANK-AMISH BLVDINTERSECTION OF 100TH ST (BUCHANAN/FAYETTE COUNTY LINE)INTERSECTION OF RIVER RD BLVD8.4940.094b$800,000None 
JOHNSONW-66SAND RDINTERSECTION OF SYCAMORE STINTERSECTION OF IOWA 228.8340.091a$885,000None 
HENRYX-23RACINE AVESOUTH CORPORATE BOUNDARY OF MOUNT UNIONNORTHWEST CORPORATE BOUNDARY OF NEW LONDON8.8940.090b ** 
WINNESHIEKIOWA 139 IOWA/MINNESOTA STATE LINEINTERSECTION OF IOWA 9 AND POLE LINE RD11.1550.090b ** 
MARIONIOWA 5 IOWA 92 INTERCHANGEMARION/MONROE COUNTY LINE13.9660.086a$1,400,000None 
POLKF-70SE VANDALIA DR/SE 56 AVEINTERSECTION OF SE 60 STINTERSECTION OF W 140TH ST (POLK/JASPER COUNTY LINE)11.4840.070b ** 
ALLAMAKEEIOWA 76 INTERSECTION OF IOWA 9/BREEZY CORNERS RDALLAMAKEE/CLAYTON COUNTY LINE20.1640.066a$2,000,000None 
POTTAWATTAMIEU.S. 6 EAST CORPORATE BOUNDARY OF COUNCIL BLUFFSSOUTH CORPORATE BOUNDARY OF OAKLAND19.9560.060a$2,000,000None 
    TOTAL256.67      

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 = 0.014 CRASHES/MILE/YEAR)

Footnotes:

(1) Potential Remedies
 (a)Paving a part of the shoulder and installing shoulder rumble strips
 (b)Further study of site-specific solutions and benefits/costs
 (c)Upgrading roadway by adding lanes, partial paved shoulders or intermittent shoulder rumble strips
  
(2)  For those without a cost entry, cost estimate is unknown until after study is completed.
  
(3)  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.


Rural interstate/freeway segments with the highest fatal and major injury crash density for multiple-vehicle, cross-median crashes
(Highest 5 percent based on data from 2001-2005)
COUNTYROAD NAMEFROMTOLENGTH (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
(1)
ESTIMATED
COSTS
IMPEDIMENTS
OTHER THAN
COST
PROGRAM
FISCAL
YEAR
JOHNSON/CEDARINTERSTATE 80MILEPOST 252~ 0.4 MI WEST OF MILEPOST 257 (DELTA AVE.)4.6452.025 $700,000 None 
JOHNSONINTERSTATE 380MILEPOST 5MILEPOST 105.0031.680 $750,000 None 
CEDARINTERSTATE 80~ 0.4 MI WEST OF MILEPOST 257 (DELTA AVE.)~ 0.4 MI WEST OF MILEPOST 2625.0031.359 $750,000 None 
JOHNSONINTERSTATE 80MILEPOST 247MILEPOST 2525.0021.280 $750,000 None 
CEDARINTERSTATE 80~ 0.4 MI WEST OF MILEPOST 262IOWA 38 INTERCHANGE (~ MILEPOST 267)5.0041.279 $750,000 None 
IOWAINTERSTATE 80IOWA 149 INTERCHANGE (MILEPOST 220)U.S. 151 INTERCHANGE (MILEPOST 225)5.0021.240 $750,000 None 
POLK/STORYINTERSTATE 35IOWA 210 INTERCHANGE~ 0.2 MI NORTH OF MILEPOST 984.5721.224 $700,000 None2008
CEDARINTERSTATE 80IOWA 38 INTERCHANGE (~ MILEPOST 267)~ 0.6 MI EAST OF MILEPOST 2715.0071.160 $750,000 None 
JASPERINTERSTATE 80MILEPOST 160MILEPOST 1655.0021.120 $750,000 None 
JOHNSONINTERSTATE 380/U.S. 218~ 0.44 MI SOUTH OF MILEPOST 95 (U.S. 218)MILEPOST 1 (INTERSTATE 380)3.4721.096 $525,000 None 
POWESHIEK/IOWAINTERSTATE 80~ 0.35 MI WEST OF MILEPOST 205~ 0.2 MI WEST OF MILEPOST 2105.1431.050 $775,000 None 
SCOTTINTERSTATE 80~ 0.1 MI EAST OF MILEPOST 286INTERSTATE 280 INTERCHANGE (MILEPOST 290)4.0021.049 $600,000 None 
JOHNSONINTERSTATE 80MILEPOST 230MILEPOST 2355.0030.920 $750,000 None 
   Total61.84      

SITE SELECTION CRITERIA:
FIVE PERCENT OF TOTAL RURAL INTERSTATE/FREEWAY MILEAGE WITH THE HIGHEST CRASH DENSITY OF MULTIPLE-VEHICLE, 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 intersection crashes
(Highest 5 percent based on data from 2001-2005)
  Five-year Crash FrequencyFive-year Severity Values    
COUNTYLOCATIONFatal
and
major
FatalMajor
Injury
Minor
Injury
OtherTotalFatalities
and
Major
Injuries
FatalitiesMajor
Injuries
Minor
Injuries
OtherPotential
Remedies *
Estimated
Costs *
Impediments *Program
Fiscal
Year
ScottU.S. 61 & Co Rd Y-48 (1 mile west of Davenport)60611825808213       
MuscatineU.S. 61 & Hershey Ave (Muscatine)6335142573479Interchange $5.4 M None 2007
FloydU.S. 18 & Co Rd T-24 (1.5 miles west of Rudd)50531321909516       
Black HawkU.S. 218 & Co Rd C-57/Cedar-Wapsi Rd W (1.5 miles south of Janesville)514522327161015       
WashingtonU.S. 218 & Co Rd G-36 (3 miles north of Ainsworth)4042192550544       
LinnU.S. 151/Dubuque Rd & Co Rd X-20 (Springville)4130131741367      
JasperU.S. 65/IOWA 330 & U.S. 65/IOWA 117321351172534      
HenryU.S. 34 & 260th St (west access to New London)31213771634      
WashingtonU.S. 218 & 305th St (Crawfordsville)30311550540      
HenryU.S. 34 & Co Rd X-30 (east access to New London)31211551422Offset Rt. Turn lane    

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

* Unless noted, a traffic safety study, including alternative analysis and local input, is required before potential remedies, cost estimates and impediments can be determined


Urban intersection crashes
(Highest 5 percent based on data from 2001-2005)
    Five-year Crash FrequencyFive-year Severity Values    
CountyCityLocationIntersection
Database Point
ID
Fatal
and
major
FatalMajor
Injury
Minor
Injury
OtherTotalFatalities
and
Major
Injuries
FatalitiesMajor
Injuries
Minor
Injuries
OtherPotential
Remedies *
Estimated
Costs *
Impediments *Program
Fiscal
Year
    2001-2005Crash FrequencySeverity Values     
WoodburySioux CityI-29 & U.S. 77 (southwest ramp intersection) 5922277071086103110112063    
ScottDavenportU.S.61/Harrison St & Locust St 723047 7161461827162029    
PolkCliveU.S. 6/Hickman Rd & 128th St 437493 606627399099111   
PolkDes MoinesTuttle St & 8th St/SW 8th St 456478 606521327071013    
ScottDavenportU.S. 6/Kimberly Rd & U.S. 61/Welcome Way 402953 5058941077071430    
Black HawkCedar FallsIA 27/IA 58 & Viking Rd 493523 505736487071118    
PolkDes MoinesSW 9th St & Kenyon Ave 704067 51432533716322    
ScottDavenportUtica Ridge Rd & E 53rd St 449315 50553848606722    
ScottDavenportU.S. 61/Welcome Way & 53rd St 501753 505946605051727    
PolkDes MoinesU.S. 6/Douglas Ave & 38th St 493824 5059365050515212150,000  2005

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

* Unless noted, a traffic safety study, including alternative analysis and local input, is required before potential remedies, cost estimates and impediments can be determined

Footnotes:

(1)  Protected left-signal phasing
(2)  Traffic signals completed in November 2005

Rural two-lane intersection crashes
(Highest 5 percent based on data from 2001-2005)
   Five-year Crash FrequencyFive-year Severity Values    
CountyLocationIntersection
Database
Point ID
Fatal
and
major
FatalMajor
Injury
Minor
Injury
OtherTotalFatalities
and
Major
Injuries
FatalitiesMajor
Injuries
Minor
Injuries
OtherPotential
Remedies *
Estimated
Costs *
Impediments *Program
Fiscal
Year
JohnsonCo Rd F-67 & Co Rd W-3826061341313851458    
Black HawkIOWA 281 & Co Rd V-493149141323941352Roundabout $1,300,000 None2008
SiouxCo Rd K-42 & 410th St51288230301440400    
BuchananCo Rd C-57 & Co Rd V-6256420321081132128    
BuchananCo Rd W-13 & 170th St5605232103632100    
BuchananIOWA 150/JAMESTOWN AVE & IOWA 150/170th St (south curve)5489431202531201Paved Shoulders$200,000 NoneCompleted

SELECTION CRITERIA:
FIVE PERCENT OF THE 200 RURAL TWO-LANE HIGHWAY INTERSECTIONS 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

* Unless noted, a traffic safety study, including alternative analysis and local input, is required before potential remedies, cost estimates and impediments can be determined