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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. Questions about the manual? Contact Dave Dahlberg at dave.dahlberg@state.mn.us.

Recent updates to manual Date updated
Transmittal No. 2019-01 - Section 3, Section 15, and Memo to Designers #2019-01 January 2019
Transmittal No. 2018-03 – Memo to Designers #2018-01 December 2018
Transmittal No. 2018-02 – Section 2 October 2018
Transmittal No. 2018-01 – Section 9 September 2018
LRFD Bridge Design Manual Date updated
LRFD Bridge Design Manual (PDF) January 2019
Sections Date updated
Cover, Title Page, and Table of Contents (PDF) January 2019
1 - Introduction (PDF) August 2016
2 - General Design and Location Features (PDF) October 2018
3 - Loads and Load Factors (PDF) January 2019
4 - Structural Analysis and Evaluation (PDF) August 2016
5 - Concrete Structures (PDF) August 2016
6 - Steel Structures (PDF) May 2009
7 - Reserved/empty -
8 - Wood Structures (PDF) August 2016
9 - Decks and Deck Systems (PDF) September 2018
10 - Foundations (PDF) June 2007
11 - Abutments, Piers and Walls (PDF) August 2016
12 - Buried Structures (PDF) September 2013
13 - Railings (PDF) May 2008
14 - Joints and Bearings (PDF) November 2017
Appendix A: Memos Date updated
2019-01 Temporary Portable Precast Concrete Barrier on Bridges (PDF) January 2019
2018-01 New 30MH, 35MH, and 40MH Prestressed Concrete Beams (PDF) December 2018
2017-02 Post-Installed Anchorages for Reinforcing Bars (PDF) October 2017
2017-01 Edge-of-Deck Thickness on Bridges and Wall Coping Height (PDF) March 2017
2016-01 Single Slope Barrier (Type S) Bridge Standards (PDF) December 2016
2015-01 Concrete Mix Design Designations (PDF) August 2015
2014-02 Inclusion of Informational Quantities in Bridge Plans (PDF) December 2014
2014-01 AASHTO LRFD Article 5.7.3.4 Concrete Crack Control Check (PDF) August 2014
2013-01 Conversion from Metric to U.S. Customary Rebar Designations (PDF) April 2013
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
2008-02 Truss Bridge Gusset Plate Analysis (PDF) October 2008
2008-01 Prestressed Concrete Design - Calculation of Prestress Losses and Beam Camber and Deflection (PDF) September 2008
2007-02 Adhesive Anchords Under Sustained Tensile Loads (PDF) October 2007