The Welcome Center ahead is also used as a Weigh and Inspection Station for commercial vehicles. Therefore, when the lights on this sign are flashing, the scales are open and all trucks must enter.  (Photo taken 5/19/17).

Interstate 81 South at the West Virginia Welcome Center / Rest Area / Weigh Station, located at mile marker 25.5.  (Photo taken 5/19/17).

State-named Interstate 81 South reassurance shield.  (Photo taken 5/19/17).

Interstate 81 South at Exit 23: US 11 - Marlowe / Falling Waters  (Photo taken 5/19/17).

Interstate 81 South at mile marker 23.6.  (Photo taken 5/19/17).

Another state-named Interstate 81 South reassurance shield.  (Photo taken 5/19/17).

The speed limit on Interstate 81 in West Virginia is 70 mph for its 26-mile entirety, save for any construction zones.  (Photo taken 5/19/17).

Mileage sign on Interstate 81 South. It's 10 miles to Martinsburg and 33 miles to Winchester, VA.  (Photo taken 5/19/17).

Interstate 81 South at mile marker 22.  (Photo taken 5/19/17).

Interstate 81 South at mile marker 21.  (Photo taken 5/19/17).

Interstate 81 South at Exit 20: WV 901 - Spring Mills  (Photo taken 5/19/17).

Truck Rest Area on Interstate 81 South.  (Photo taken 5/19/17).

Mileage sign at the Truck Rest Area on Interstate 81 South. It's 7 miles to Martinsburg, 30 miles to Winchester, and 206 miles to Roanoke.  (Photo taken 5/19/17).

Use Exit 12 to get to Blue Ridge Community and Tech College.  (Photo taken 5/19/17).

Sign listing the distances to the three upcoming exits to Martinsburg.  (Photo taken 5/19/17).

Take Exit 16W to Hedgesville and Exit 16E to Shepherd University.  (Photo taken 5/19/17).

Interstate 81 South at Exit 16W: WV 9 West - Berkeley Springs  (Photo taken 5/19/17).

Interstate 81 South at Exit 16E: WV 9 East - N Queen St  (Photo taken 5/19/17).

Another mileage sign for the next 3 Martinsburg exits.  (Photo taken 5/19/17).

Interstate 81 South at Exit 14: CR 13 - Dry Run Rd / Tennessee Ave  (Photo taken 5/19/17).

Take Exit 13 to the Historic Areas Visitor Center.  (Photo taken 5/19/17).

The speed limit remains 70 mph.  (Photo taken 5/19/17).

Interstate 81 South at Exit 13: CR 15 - King Street / Downtown  (Photo taken 5/19/17).

Take Exit 12 to Harpers Ferry and the V.A. Medical Center.  (Photo taken 5/19/17).

Interstate 81 South at Exit 12: WV 45 / WV 9 East - Winchester Ave / Charles Town  (Photo taken 5/19/17).

Interstate 81 South at mile marker 10.  (Photo taken 5/19/17).

Take Exit 8 to Eastern West Virginia Regional Airport.  (Photo taken 5/19/17).

Interstate 81 South at Exit 8: CR 32 - Tabler Station Rd  (Photo taken 5/19/17).

Interstate 81 South at mile marker 7.  (Photo taken 5/19/17).

Take Exit 5 to Gerrardstown.  (Photo taken 5/19/17).

Interstate 81 South at Exit 5: WV 51 - Inwood  (Photo taken 5/19/17).

State-named Interstate 81 South reassurance shield.  (Photo taken 5/19/17).

Mileage sign on Interstate 81 South. It's 4 miles to Whitehall, 14 miles to Winchester, and 190 miles to Roanoke.  (Photo taken 5/19/17).

The next available southbound Rest Area on Interstate 81 is the Virginia Welcome Center, which is 6 miles ahead.  (Photo taken 5/19/17).

Interstate 81 South at mile marker 2.  (Photo taken 5/19/17).

Interstate 81 South at mile marker 1.  (Photo taken 5/19/17).

Approaching the Virginia border, there is this advance mileage sign for Exit 323.  (Photo taken 5/19/17).