The two roadways reunite at a point north of an interchange for CR 7 and WV 20 near Gardner. After passing over WV 20 with no access, the space between the northbound and southbound roadways widens. The highway continues northward through rural Mercer County, roughly following US 19. Here, I-77 becomes the West Virginia Turnpike, which it remains through Charleston. It then continues north toward Princeton, which is served by an interchange with US 460.

Changing its course to a more northerly alignment, I-77 reaches another partial interchange serving County Route 27 (CR 27). I-77 then turns to the northeast and comes to a partial interchange with West Virginia Route 112 (WV 112) in Ingleside. I-77's first exit in West Virginia is 0.6 miles (0.97 km) north of the state line US 52 leaves the highway here. It surfaces in Mercer County to the east of Bluefield as a four-lane freeway. I-77 enters West Virginia from Virginia via the East River Mountain Tunnel, running concurrently with US Route 52 (US 52). Route description Virginia to Charleston Due to the difficulty and lives lost in construction, it has been called '88 miles of miracle'. It was only in 1987 that the entire length of the turnpike was upgraded to Interstate standards. Construction began in 1952, several years before the Interstate Highway System was funded. Historically, the West Virginia Turnpike was a two-lane road with treacherous curves and a tunnel (which has since been decommissioned).

I-77 follows the entire length of the West Virginia Turnpike, a toll road that runs between Princeton and Charleston, and it runs concurrently with I-64 between Beckley and Charleston. The highway serves Charleston, the capital and largest city in West Virginia it also serves the cities of Princeton, Beckley, and Parkersburg. It extends for 187.21 miles (301.29 km) between Bluefield at the Virginia state line and Williamstown at the Ohio state line. Interstate 77 ( I-77) in the US state of West Virginia is a major north–south Interstate Highway. Mercer, Raleigh, Fayette, Kanawha, Jackson, Wood I-77 at Ohio state line at the Marietta-Williamstown Interstate Bridge

Charleston wv easy pass