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LRFD Bridge Design Manual

The LRFD Bridge Design Manual contains MnDOT Bridge Office procedures for the design, evaluation and rehabilitation of bridges. Except where noted, the design provisions employ the LRFD methodology set forth by AASHTO.

The manual files are not currently available in an ADA accessible format. If ADA accommodations are needed, contact Karl Johnson, 651-366-4521.

Recent updates to manual Date updated
Transmittal No. 2022-02 – Sections 2, 5, and 9 (PDF) June 2022
Transmittal No. 2022-01 – Memo to Designers #2022-01(PDF) February 2022
Transmittal No. 2021-03 – Sections 2, 8, and 11 (PDF) October 2021
LRFD Bridge Design Manual Date updated
LRFD Bridge Design Manual (PDF) June 2022
Sections Date updated
Cover, Title Page, and Table of Contents (PDF) June 2022
1 - Introduction (PDF) August 2016
2 - General Design and Location Features (PDF) June 2022
3 - Loads and Load Factors (PDF) June 2020
4 - Structural Analysis and Evaluation (PDF) June 2020
5 - Concrete Structures (PDF) June 2022
6 - Steel Structures (PDF) July 2019
7 - Reserved/empty -
8 - Wood Structures (PDF) October 2021
9 - Decks and Deck Systems (PDF) June 2022
10 - Foundations (PDF) June 2019
11 - Abutments, Piers and Walls (PDF) October 2021
12 - Buried Structures (PDF) June 2019
13 - Railings (PDF) July 2019
14 - Joints and Bearings (PDF) June 2019
Appendix A: Memos Date updated
2022-01 – MnDOT Service Life Design Guide for Bridges (PDF) February 2022
2021-01 – Use of 300 ksi Prestressing Strand in Precast Pretensioned Concrete Beams (PDF) January 2021
2020-01 MASH Implementation and Bridge Railing Design (PDF) February 2020
2019-01 Temporary Portable Precast Concrete Barrier on Bridges (PDF) January 2019
2017-02 Post-Installed Anchorages for Reinforcing Bars (PDF) October 2017
2015-01 Concrete Mix Design Designations (PDF) August 2015
2014-01 AASHTO LRFD Article 5.7.3.4 Concrete Crack Control Check (PDF) August 2014
2012-02 Transition to New MnDOT Pile Formula 2012 MPF12 (PDF) November 2012
2012-01 Discontinued Usage of Plain Elastomeric Bearing Pads and Substitution with Cotton-Duck Bearing Pads (PDF) April 2012

MnDOT Bridge Design Workshop presentations

June 2021 workshop

May 2017 workshop

June 2012 workshop