Road Safety Audit for Intersection of US 218 and County Road C-57 in Black Hawk County, Iowa
US 218 and County Road C-57 intersection looking southwest
Start date: 06/22/09
End date: 08/17/09
Report: Road Safety Audit for Intersection of US 218 and County Road C-57 in Black Hawk County, Iowa (1.92 mb pdf) August 2009
Sponsor(s): Iowa Department of Transportation
About the research
Beginning on June 22, 2009, a road safety audit was initiated for the intersection of US 218 and County Road C-57 in Black Hawk County, Iowa. Due to the traffic volumes and the number of conflicting traffic movements on these two roadways, this intersection has developed a crash history that concerns the Iowa Department of Transportation (Iowa DOT), Iowa State Patrol, and local agencies. This intersection is ranked seventh in Iowa for the highest number of at-grade expressway intersection crashes. Considering this, Black Hawk County and the Iowa DOT requested that a road safety audit be conducted to address the safety concerns and recommend possible mitigation strategies.