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. 2025-01 – Sections 2, 3, 5, 10, and 11 (PDF) | October 2025 |
| Transmittal No. 2024-01 – Memo to Designers #2024-01 (PDF) | August 2024 |
| Transmittal No. 2023-01 – Sections 2, 5, 9, 11, 14, and Memo to Designers #2023-01 (PDF) | November 2023 |
| LRFD Bridge Design Manual | Date updated |
|---|---|
| LRFD Bridge Design Manual (PDF) | August 2024 |
| Sections | Date updated |
|---|---|
| Cover, Title Page, and Table of Contents (PDF) | October 2025 |
| 1 - Introduction (PDF) | August 2016 |
| 2 - General Design and Location Features (PDF) | October 2025 |
| 3 - Loads and Load Factors (PDF) | October 2025 |
| 4 - Structural Analysis and Evaluation (PDF) | June 2020 |
| 5 - Concrete Structures (PDF) | October 2025 |
| 6 - Steel Structures (PDF) | July 2019 |
| 7 - Reserved/empty | - |
| 8 - Wood Structures (PDF) | October 2021 |
| 9 - Decks and Deck Systems (PDF) | November 2023 |
| 10 - Foundations (PDF) | October 2025 |
| 11 - Abutments, Piers and Walls (PDF) | October 2025 |
| 12 - Buried Structures (PDF) | June 2019 |
| 13 - Railings (PDF) | July 2019 |
| 14 - Joints and Bearings (PDF) | November 2023 |
MnDOT Bridge Design Workshop presentations
September 2025 workshop
- Service Life Design Guide (PDF)
- Barriers, Parapets, and Railings (PDF)
- Drafting and Plan Production (PDF)
- Standards Updates (PDF)
- Prestressed Concrete Beams (PDF)
- Bridge Load Ratings (PDF)
- AASHTO and BDM Updates (PDF)
- Preliminary Design (PDF)
- Quality (PDF)
- Construction and Specifications (PDF)
- Abutments (PDF)
- Piers (PDF)