Texas. Dept. of Transportation. Research and Technology Implementation Office

NTL-PLANNING AND POLICY-PLANNING AND POLICY ; NTL-HIGHWAY/ROAD TRANSPORTATION-Bridges and Structures ;

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This implementation project created CULVLR: Culvert Load Rating, Version 1.0.0, a Windows®-based

desktop application software package that automates the process by which Texas Department of Transportation

(TxDOT) engineers and their consultants perform load rating calculations for reinforced concrete box

culverts. Based on TxDOT’s Culvert Rating Guide, the tasks associated with this project included programming

the culvert rating process, software testing, creation of Help files, creation of the Install program, and

beta testing. CULVLR is structured to accept reinforced box culvert input parameters in a manner typical of

TxDOT design standards. The program uses these inputs to generate capacities for each critical section of the

culvert structure. The load rater can select either Level 1 (CULV5) or Level 3 (RISA-3D) structural analysis

software to generate demand loads, and CULVLR calculates load rating factors based on the calculated capacities

and demands. Reporting functions allow the load rater to print summary, standard, or comprehensive

reports.

US Transportation Collection

5-5849-01