I-70

Interstate 70 is a major east-west Interstate Highway in the United States that runs from I-15 near Cove Fort, Utah, to I-695 and Maryland Route 570 in Woodlawn, just outside Baltimore, Maryland. The route passes through or near many major US cities, including Denver, Kansas City, St. Louis, Indianapolis, and Pittsburgh. The construction of I-70 in Colorado and Utah is considered an engineering marvel, particularly through the Eisenhower Tunnel, Glenwood Canyon, and the San Rafael Swell, which features a 108-mile stretch with no services and the first highway in the US built over a completely new route since the Alaska Highway.learn more on wikipedia