Scour Records and Reports
Many bridges are susceptible to scour of the foundations and abutments from flowing water. These bridges are screened and classified for their potential for scour. Various scour reports, calculations, and photos are necessary to document the scour potential. Scour information should be included within the bridge record on the Bridge Inspection Management System. All bridges over waterways must have a scour evaluation and Scour Summary Sheet available within the Bridge Inspection Management System.
- Per the TxDOT Bridge Project Development Manual, a scour analysis is required for all new bridges over waterways.
- District Bridge Inspection Staff will work with Bridge Division and inspectors to ensure new structures have accurate scour coding within three (3) months of the date of the initial inspection. Scour documentation will be uploaded to the Bridge Inspection Management System.
- All existing structures over waterways require scour evaluations and a Scour Summary Sheet, and these items will be uploaded to the Bridge Inspection Management System.
- All structures coded as Scour Critical (Item 113 less than or equal to 3) [SNBI Item B.AP.03 is either C or D] or that have unknown foundations require a Scour Plan of Action (POA) and the documentation will be uploaded to the Bridge Inspection Management System by District Bridge Inspection Staff.
Any structure with a change in scour conditions and vulnerability shall have the coding of Item 113 [SNBI Item B.C.11 and SNBI Item B.AP.03] updated within 3 months of the inspection or scour evaluation date.
Refer to the TxDOT Scour Evaluation Guide for additional coding guidance.