Interstate 80

Interstate 80 (I-80) is a transcontinental limited-access highway that runs from downtown San Francisco, California to Teaneck, New Jersey in the New York City Metropolitan Area. The second-longest Interstate Highway in the United States (after Interstate 90), I-80 is the Interstate Highway that most closely approximates the route of the historic Lincoln Highway, the first road across America. The highway roughly traces other historically significant travel routes in the Western United States: the Oregon Trail across Wyoming and Nebraska, the California Trail across most of Nevada and California, and, except in the Great Salt Lake area, the entire route of the First Transcontinental Railroad.

From near Chicago, Illinois east to near Youngstown, Ohio, Interstate 80 is a toll road, containing the majority of both the Indiana Toll Road and the Ohio Turnpike. I-80 runs concurrent with Interstate 90 from near Portage, Indiana to Elyria, Ohio. In Pennsylvania, I-80 is known as the Keystone Shortway, a non-tolled freeway that crosses rural north-central portions of the state on the way to New Jersey and New York City.