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 522 in Maryland
U.S. Route 522 (US 522) is a part of the U.S. Highway System that runs from Powhatan, Virginia to Selinsgrove, Pennsylvania. In Maryland, it runs from the West Virginia state line at the Potomac River north to the Pennsylvania state line within Hancock in western Washington County. US 522 crosses Maryland at its narrowest north–south point, meeting Maryland Route 144 (MD 144), Interstate 70 (I-70), US 40, and I-68 before entering Pennsylvania concurrent with I-70. Warfordsburg Road from US 40 (now MD 144) north to Pennsylvania was paved around 1920 and designated US 522 in the late 1920s. US 522 was extended south into West Virginia shortly after a new bridge was completed over the Potomac River in the late 1930s. It was moved onto I-70 north of Hancock when the Interstate highway was completed in the area in the mid 1960s.