Bridge Rails and Approach Railing for Low-Volume Roads in Iowa (TR-592)
Start date: 08/01/08
End date: 07/31/09
Report: March 2010, Bridge Rails and Approach Railing for Low-Volume Roads in Iowa (TR-592) 24.1 mb (*pdf)
Related publications: Bridge Rail and Approach Railing for Low-Volume Roads In Iowa 342 kb *pdf March 2010
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Iowa Department of Transportation
Iowa Highway Research Board
About the research
Abstract: Provide guidance to county engineers for replacement or upgrading bridge and bridge approach guard railing by --Determining the criteria and guidelines used by other states for bridge and approach guardrail implementation for low and very low-volume roads. --Performing benefit/cost analysis for using bridge and approach guardrails based on traffic levels and road classifications. --Investigating the use of non-standard and innovative bridge and approach guardrails for low-volume roads.
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