Interstate 80
I-80 is the Interstate Highway that most closely approximates the route of the historic Lincoln Highway, the first road across the United States. 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, the first transcontinental airmail route, and except in the Great Salt Lake area, the entire route of the First Transcontinental Railroad. From near Chicago east to near Youngstown, Ohio, I-80 is a toll road, containing the majority of both the Indiana Toll Road and the Ohio Turnpike. I-80 runs concurrently with I-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.
U.S. Route 93 Alternate (Nevada)
Alt 93 has origins dating back to the early auto trails. The portion of the route between Lages Station and West Wendover was originally part of the Lincoln Highway, the first road across America. This segment was originally designated as a portion of US 50. When the US highway system was developed in 1926 the routing of US 50 followed what is now US 93 between Ely and Lages Station and then continued on to West Wendover. From there, it followed US 40 (now Interstate 80) east across the Great Salt Lake Desert in Utah, through Salt Lake City, south along US 91 (now Interstate 15) to Provo, Utah. This designated remained until approximately 1952, when it was redesignated US 50 Alternate. Utah decommissioned portions of Alt 50 in 1972.