TRS - Bridge Drainage Systems and Discharge to Waterways

Status:  Complete
Report Date:  07/27/2023


The intent of this project was to contact other agencies to identify their typical design practices and how they address bridge deck drainage. If available, the project sought to learn standard best practices that could be directly applied to Minnesota infrastructure plans to standardize and improve drainage detailing and design practices. In reviewing the online survey and follow-up interview results with the TAP, no concise, ready to implement solution was found and many of the agencies are addressing similar concerns and lack fully developed standards or guidance documents. Although no single specific solution was identified, several key lessons were identified in the interviews which should be incorporated into further investigation and development of standards.

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