Project 0-5849

Evaluating Existing Culverts for Load Capacity Allowing for Soil Structure Interaction

concrete box culvert

This study explored culvert load rating practices as applied to TxDOT’s archive of 1477 culvert designs and their inventory of over 13,000 in-service reinforced concrete box culverts. TechMRT researchers developed a clear, repeatable, and reliable procedure for TxDOT engineers and consultants to load rate culverts in the TxDOT roadway system. The research effort for the fi rst year of this project was directed toward developing a new, improved culvert rating procedure. Requirements were that the procedure be based on authoritative AASHTO code, that it be conceptually clear and generally applicable to many analytical methods, and that it incorporate escalating levels of analytical rigor. To this end, the research team developed and published TxDOT’s Culvert Rating Guide, a tool to help engineers produce conservative load ratings that also allow for reduction in costly excess over-conservatism.

William D. Lawson

Read Project Summary Report Here
View Culvert Loading Guide Here
Read Full Research Report Here

Contact Information

William D. Lawson, P.E., Ph.D.
Department of Civil Engineering
Texas Tech University
Lubbock, TX 79409-1022

Tel:(806) 834-5690
Fax: (806) 742-0444