About Infrastructure
The Office of Infrastructure has three offices:- Office of Stewardship, Oversight and Management
- Office of Bridge and Structures
- Office of Preconstruction, Construction and Pavements
The Office provides leadership, technical expertise, and program assistance to help sustain America's mobility in:
Policy and Guidance
- Fatigue Resistant Rib-to-Floor Beam Connections for Orthotropic Steel Decks with Potential for Automated Fabrication (.pdf) (September, 2019)
- Tech Brief: Field Control of Concrete Paving Mixtures (.pdf) (November, 2019)
- Tech Brief: Specifying, Designing, and Proportioning Paving Concrete (.pdf) (November, 2019)
- Tech Brief: Air Entrainment and Concrete Durability (.pdf) (November, 2019)
- 23 CFR 635.411 Culvert and Storm Sewer Materials Types (9/27/19)
- Visit the Policy and Guidance Center
Highway History
Ever wonder why Congress didn't pass the Federal-Aid Highway Act of 1956 in 1955? Do you blame the future for our traffic problems? Did the 50th anniversary of the Interstate System in 2006 make you forget other historic milestones celebrated that year? And what's the big deal about the Interstate System anyway? These and many other highway history questions are answered on the Highway history page. In addition, you will find features such as: