- State Highway and Transportation Departments (DOT’s) – Links to all State DOT’s main home pages
- Alabama Bridge Bureau
- Alaska Bridge Design Section
- Arizona Bridge Group
- Arkansas Bridge Division
- California (Caltrans) Office of Structures
- Colorado Bridge Library
- Connecticut State Bridge Design
- Connecticut Bridge Consultant Design
- Delaware Design Resource Center – Bridge Design
- District of Columbia DOT
- Florida Structures Design Office
- Georgia Office of Bridge Design
- Hawaii 2005 Standard Specifications
- Idaho Bridge Section
- Illinois Bureau of Bridges and Structures
- Indianna Bridge Unit
- Iowa Office of Bridges and Structures
- Kansas State Bridge Design Office
- Kentucky Division of Structural Design
- Louisiana Bridge Design Section
- Maine DOT Bridge Office
- Maryland State Highway Administration – Office of Bridge Development
- Massachusetts Bridge Section
- Michigan Bridge Program
- Minnesota Office of Bridge and Structures
- Mississippi Bridge Design Division
- Missouri Bridge Standard Drawing (from State Bridge office)
- Montana Bridge Bureau
- Nebraska Department of Roads – Bridge Division
- Nevada Structures Division
- New Hampshire Bureau of Bridge Design
- New Jersey DOT – Structural Engineering Unit
- New Mexico Bridge Design Bureau
- New York State Office of Structures
- North Carolina – Bridge Informaion
- North Dakota – Bridge Information
- Ohio Office of Structural Engineering
- Oklahoma – Highway Information
- Oregon DOT – Bridge Engineering
- Pennsylvania DOT – Bridge Quality Assurance Division
- Rhode Island DOT – Bridge Design
- South Carolina DOT
- South Dakota DOT
- Tennessee – Structures Division
- Texas DOT – Bridge Information
- Utah – Structures Design & Bridge Operations
- Vermont – The Structures Section
- Virginia DOT
- Washington State – Bridges and Structures Office
- West Virginia DOT – Division of Highways
- Wisconsin – Bridges
- Wyoming – Bridge Program