Minnesota Department of Transportation

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Bridges and Structures

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Bridge rating

Bridge Load Rating Manual

The Bridge Load Rating Manual contains MnDOT Bridge Office procedures for the evaluation and load ratings of bridges. Contact Yihong Gao at yihong.gao@state.mn with any questions about the manual.

MnDOT Bridge Load Rating and Evaluation Manual (PDF) October 2018
Document Date updated

 

Rating documents

County and local agencies

NOTE: all load rating documents after May 29, 2020 must use the new electronic fillable PDF Form RC-CL, Form 90-CL and Form PIR-CL. To attain archived load rating Form RC-CL, Form 90 and Form PIR-CL PDF, please contact the State Aid Bridge Unit.

Trunk highways

  • MnDOT Form RC-TH: Bridge Rating and Load Posting Report for Trunk Highways (PDFWord)
  • MnDOT Form 90: Culvert Rating Form (PDF, Word)
  • MnDOT Form PIR-TH: MnDOT Physical Inspection Rating for Trunk Highways (PDFWord)
  • MnDOT Form PW: Posting Worksheet (PDFWord)
  • MnDOT Form Truss R: Bridge Rating Details (PDF, Word)
  • MnDOT Posting Sign R12-5A (PDF)