Road Safety Audit for County Road H-46 in Jefferson County, Iowa

Project Details
STATUS

Completed

START DATE

10/21/09

END DATE

01/20/10

RESEARCH CENTERS InTrans, CTRE
SPONSORS

Iowa Department of Transportation

Researchers
Principal Investigator
Tom McDonald

Safety Circuit Rider

About the research

Jefferson County Road H-46 from Redwood Avenue to the southeast corporate limits (SCL) of Fairfield, Iowa, is a paved roadway approximately 6.5 miles long made of asphaltic concrete pavement with curvilinear alignment. The roadway consists of a 22 ft wide pavement, last overlaid in 2002, with 3 to 4 ft wide earth shoulders. Traffic estimates indicated volumes ranging from 500 to 1,590 vehicles per day, with numbers increasing as the route nears Fairfield. This roadway was found to be among the highest 5 percent of similar Iowa roadways in terms of severity of run-off-road crashes.

In response, Iowa Department of Transportation (Iowa DOT) requested a road safety audit to examine the roadway and suggest possible mitigation. Representatives from the Iowa DOT, Federal Highway Administration, Institute for Transportation, local law enforcement, and local government met to review crash data and discuss potential safety improvements to this segment H-46.

This report outlines the findings and recommendations of the road safety audit team for addressing the safety concerns on this roadway

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