Other
Highway History
A large collection of articles chronicling the history of our nation's highways. Includes articles showing the history from very early highways to the interstate system. Lots of related articles, pictures, and even songs about roads.
National Academy of Engineering
Greatest Engineering Achievements of the 20th Century: Highways
Students learn about highways in the 20th century. Some topics investigated are WWI lessons, interstates, and ongoing improvements. The resource consists of historical information, a timeline, and a personal essay by a key innovator.