Nov 16

W-Beam Bridge Rails for Low-Volume Rural Roads: Issues and Solutions

Event Details

November 16, 2023


This free webinar will begin at 12:00 p.m. (Central Time)


Details to access the Webex webinar will be emailed along with a confirmation after you register.

Event Contact
Keith Knapp
InTrans, Iowa LTAP


W-beam and thrie-beam rails are commonly used as bridge rails on rural, county roadways. However, due to a lack of understanding these railings, many of these bridge rails are installed improperly. Common safety issues include a lack of guardrail anchorage, inadequate run-out lengths, guardrail blunt ends, and large posts posing as snag risks. This presentation explores these issues and their negative effects on safety performance. Additionally, multiple crashworthy W-beam railings are detailed and discussed as options for either side-mounted or top-mounted W-beam railings. Finally, similar W-beam systems are presented for use to treat concrete box culverts. All of these W-beam systems have been evaluated and satisfy current Manual for Assessing Safety Hardware (MASH) safety standards for TL-2 and/or TL-3 installations.

Speaker Bio

Scott K. Rosenbaugh, MSCE, is a research engineer for the Midwest Roadside Safety Facility at the University of Nebraska, where he has worked for over 15 years. Mr. Rosenbaugh has specialized in the development, analysis, crash testing, and evaluation of various roadside safety systems, including concrete barriers, bridge rails, approach guardrail transitions, crash cushions, and roadside guardrails. He has served as a lead researcher with the Midwest Pooled Fund Program, as an active member of multiple committees within the Transportation Research Board, and as principal investigator (PI) or Co-PI on multiple National Cooperative Highway Research Program (NCHRP) projects.