What year was the Cumberland Gap Tunnel, one of two mountain vehicular tunnels in the United States, opened which extended U.S. 58 from Harrogate, Tennessee to Virginia Beach, Virginia?
U.S. Route 58 U.S. Route 58 is an east–west U.S. Highway that runs for 508 mi from U.S. Route 25E just northwest of Harrogate, Tennessee, to U.S. Route 60 in Virginia Beach, Virginia. Until 1996, when the Cumberland Gap Tunnel opened, US 58 ran only inside the commonwealth of Virginia. It was then extended southwest along a short piece of former US 25E, which no longer enters Virginia, to end at the new alignment in Tennessee.
South Mountain (Maryland and Pennsylvania) South Mountain is the northern extension of the Blue Ridge Mountain range in Maryland and Pennsylvania. From the Potomac River near Knoxville, Maryland, in the south, to Dillsburg, Pennsylvania, in the north, the 70 mi range separates the Hagerstown and Cumberland valleys from the Piedmont regions of the two states. The Appalachian National Scenic Trail follows the crest of the mountain through Maryland and a portion of Pennsylvania.