Author Description

Stormwater treatment of bridge deck runoff continues to be a design challenge. There is a growing need to develop more options for on-bridge treatment of stormwater that will address challenges, including, but not limited to, level of service, structural integrity, hydraulic function, litter and sediment loads, freeze-thaw cycles, maintenance operations, and work zone safety. NCHRP Research Report 1117: On-Bridge Stormwater Treatment Practices: A Guide, from TRB's National Cooperative Highway Research Program, presents a guide for determining the feasibility of on-bridge stormwater treatments for bridges and what design, construction, and operation and maintenance approaches are necessary to mitigate risks and balance costs with environmental protection. Supplemental to the report is NCHRP Web-Only Document 401: Developing a Guide for On-Bridge Stormwater Treatment Practices, a conduct of research report summarizing the work that went into the development of the guide.