AARoads Roadtrip Page - Photos and information from many roadtrips all over the US.Emilebymile - Highway logs composed by tourist businesses located on the highways.
Traffix - Traffic simulation software demo.
Me and The Roads - Kurumi's java game where you build roads on an island.
The Bridges Project - Online database of significant bridges (with photos), fully searchable and with features that make full use of the database's potential.
The West Point Bridge Designer - Free software that lets you design a bridge.
The Tunnel Page - The longest road and rail tunnels in the world--grouped by categories such as sub-sea tunnels, immersed tubes, etc.
International Highway - The international highway project advocates a highway system connecting most of the world, including a Bering Strait bridge and Japan-South Korea tunnel.
World Highways magazine - News on designing, construction, financing, maintaining and operating major roads worldwide.
Slashdot: Supercomputers Used to Study Urban Traffic - A link to an article and discussion about the science of traffic.
Trafficware Software - Download demo software for simulating intersections, traffic signals, and traffic flow.
Roadfan Locator - A list of people sorted by state. If you have a question about a specific road or roads you can use this list and email someone.
Larabie Fonts - Includes the Blue Highway font, used on highway signs in the US and some other countries. Many road websites use the Blue Highway font.