Bridges and Tunnels of Allegheny County and Pittsburgh, PA
- A comprehensive listing of the structures. Includes detailed histories and photographs.
- http://pghbridges.com/

Dingmans Bridge
- Official website of one of the few privately owned bridges left in America. History, photos, tolls, and directions.
- http://www.dingmansbridge.com/

Metropolitan Transportation Authority
- Manages transit, buses, subways, trains, bridges and tunnels in New York City and surrounding areas including Long Island.
- http://www.mta.info/

The Port Authority of New York & New Jersey
- Manages bridges, tunnels, airports and transit in New York City and Northern New Jersey.
- http://www.panynj.gov/

Bridge Tolls Now!
- Covers the movement to toll the East River bridges in New York City.
- http://bridgetolls.org/

BostonRoads.com
- Descriptive histories.
- http://www.bostonroads.com/

Nycroads.com
- Extensively covers crossings.
- http://www.nycroads.com/

Phillyroads.com
- History and current information on the infrastructure in the Philadelphia metropolitan area.
- http://www.phillyroads.com/

WWB Project Website
- The official site for the Woodrow Wilson Bridge replacement project on the Capital Beltway on the south edge of Washington, D.C.
- http://www.wilsonbridge.com/