A Trip Within the Beltway
- Weblog documenting old and new plans in the area.
- http://wwwtripwithinthebeltway.blogspot.com/

DCRoads.net
- Guide to the expressway, parkway, bridge and tunnel network in the Washington-Baltimore metropolitan area. Exit listings for area highways.
- http://www.dcroads.net/

495sucks.com
- Promotes change to improve rush-hour traveling conditions on I-495 and other area highways.
- http://www.495sucks.com/

District Department of Transportation
- Official site includes planning and construction information.
- http://www.ddot.dc.gov/

Roads to the Future
- Includes in-depth articles about many features.
- http://www.roadstothefuture.com/

District of Columbia Highway(s)
- Information about the one district-numbered highway (Route 295) and others that could be.
- http://www.yurasko.net/wfy/beltway/dc.html