Question: U.S. Route 58 ran only inside the commonwealth of Virginia, until the creation of the tunnel that carries U.S. Route 25E under Cumberland Gap National Historical Park near the intersection of Kentucky, Tennessee, and Virginia, in what year?

full_context: Document 1: Cumberland Gap: The Cumberland Gap is a narrow pass through the long ridge of the Cumberland Mountains, within the Appalachian Mountains, near the junction of the U.S. states of Kentucky, Virginia, and Tennessee.
Document 2: Kentucky Route 1958: Kentucky Route 1958 (KY 1958) is an 8.669 mile (13.951 km) long state highway in the Winchester, Kentucky area. The route, a bypass circling the perimeter of the city, is defined by the Kentucky Transportation Cabinet as a north–south route despite the east–west alignment the bypass follows for most of its length. Its southern terminus is at Kentucky Route 627 (former US 227) a quarter-mile south of Interstate 64 exit 96 north of the city. The northern terminus is at Kentucky Route 2888 (Rockwell Road) mere yards from I-64 northwest of downtown.
Document 3: Cumberland Gap National Historical Park: Established on June 11, 1940, Cumberland Gap National Historical Park is a United States National Historical Park located at the border between Kentucky, Tennessee, and Virginia. The Cumberland Gap is a sizable natural break in the Appalachian Mountains.
Document 4: U.S. Route 25E: U.S. Route 25E is the eastern branch of U.S. Route 25 from Newport, Tennessee, where US 25 splits into US 25E and US 25W, to North Corbin, Kentucky, where the two highways rejoin. The road, however, continues as US 25E for roughly 2 miles (3.2 km) until it joins Interstate 75 in North Corbin.
Document 5: Wilderness Road: The Wilderness Road was one of two principal routes used by colonial and early national era settlers to reach Kentucky from the East. Although this road goes through the Cumberland Gap into southern Kentucky and northern Tennessee, the other (more northern route) is sometimes called the "Cumberland Road" because it started in Fort Cumberland in Maryland. Despite Kentucky Senator Henry Clay's advocacy of this route, early in the 19th century, the northern route was selected for the National Road, connecting near Washington, Pennsylvania into the Ohio Valley of northern Kentucky and Ohio.
Document 6: U.S. Route 250 in Virginia: U.S. Route 250 (US 250) is a part of the U.S. Highway System that runs from Sandusky, Ohio to Richmond, Virginia. In Virginia, the U.S. Highway runs 166.74 mi from the West Virginia state line near Hightown east to its eastern terminus at US 360 in Richmond. US 250 is the main east–west highway of Highland County, which is known as Virginia's Little Switzerland; the highway follows the path of the 19th century Staunton and Parkersburg Turnpike. From Staunton east to Richmond, the U.S. Highway serves as the local complement to Interstate 64 (I-64), roughly following the 18th century Three Notch'd Road through Waynesboro and Charlottesville on its way through the Shenandoah Valley, its crossing of the Blue Ridge Mountains at Rockfish Gap, and the Piedmont. In the Richmond metropolitan area, US 250 is known as Broad Street, a major thoroughfare through the city's West End and downtown areas.
Document 7: Rocky Face Fault: The Rocky Face Fault is a geological fault responsible, in part, for the location of Cumberland Gap at Cumberland Mountain and the Narrows gap at Pine Mountain in the southern Appalachian mountain range. The fact that these two gaps lined up enabled western migration across the Appalachians to Kentucky. Included along the fault are the towns of Middlesboro and Pineville, Kentucky. The fault represents a crack in the Cumberland Overthrust Sheet, one of many remnant resistant strata pushed upwards to the northwest over the neighboring Cumberland Plateau. The fault is named after Rocky Face, a prominent, cliff-lined mountain between Middlesboro and Pineville, Kentucky.
Document 8: 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.
Document 9: Tri-State Peak: Tri-State Peak is a mountain located in the Cumberland Gap National Historical Park, near the "saddle" of the gap. It gets its name from being on the tri-point of the states of Kentucky, Tennessee, and Virginia.
Document 10: Gap Cave: Gap Cave is located just underneath Pinnacle Overlook in the Cumberland Gap National Historical Park, Lee County, Virginia. Currently, the cave has a surveyed length of 18.5 miles and is the 42nd longest cave in the United States and 154th in the world. There are six known entrances: the Gap Cave Entrance (also known as the King Solomons Cave Entrance), an artificial entrance, known as the Cudjo's Cave Entrance, the Stream Entrance, the Soldiers Cave Entrance, the Big Saltpeter Cave Entrance, and the Wellhole. All lead into the same cave, Gap Cave.
Document 11: U.S. Route 78: U.S. Highway 78 is an east–west United States highway that runs for 715 miles (1,151 km) from Memphis, Tennessee, to Charleston, South Carolina. A segment of US 78 from near Memphis, Tennessee, to Birmingham, Alabama, is designated as Interstate 22.
Document 12: Cumberland Gap Tunnel: The Cumberland Gap Tunnel is a tunnel that carries U.S. Route 25E under Cumberland Gap National Historical Park near the intersection of Kentucky, Tennessee, and Virginia. According to United States Geological Survey maps of the area, the tunnel does not enter Virginia. It is one of only two mountain vehicular tunnels in the United States that cross a state line, the other being the East River Mountain Tunnel on Interstate 77 between Virginia and West Virginia.
Document 13: Cumberland Gap, Tennessee: Cumberland Gap is a town in Claiborne County, Tennessee, United States. Its population was 494 at the 2010 census. The town is located near the Cumberland Gap, a historic mountain pass for which the town is named, and is surrounded on all sides by the Cumberland Gap National Historical Park. The town is also a part of the park.
Document 14: Kentucky Route 38: Kentucky Route 38, also known as KY 38, is a state highway in the U.S. state of Kentucky. Part of the State Secondary System, it runs east from U.S. Highway 421 in Harlan east via Brookside, Evarts, Benito, Black Bottom, and Holmes Mill to the Virginia state line. In Virginia, the road continues as secondary State Route 624 to Keokee; State Route 606 and primary State Route 68 provide access from Keokee to the town of Appalachia, Virginia.
Document 15: Interstate 85 in Virginia: Interstate 85 (I-85) is a part of the Interstate Highway System that runs from Montgomery, Alabama to Petersburg, Virginia. In Virginia, the Interstate Highway runs 68.64 mi from the North Carolina state line near Bracey north to I-95 in Petersburg. I-85 passes through the eastern part of Southside Virginia, where it parallels U.S. Route 1 (US 1) from Petersburg, where the highway runs concurrently with US 460, to south of South Hill, where the highway intersects Southside's major east–west highway, US 58. The Interstate Highway is the primary connection between the Richmond–Petersburg metropolitan area and the Research Triangle and other major metropolitan areas of North Carolina. Like all mainline Interstate Highways, I-85 is a part of the National Highway System for its entire length in Virginia.
ground_truth: 1996