 (In the 21st century, much of this land is part of the Monongahela National Forest).The turnpike descended Cheat Mountain into the valley of the Tygart Valley River and followed it northerly to the town of Beverly, the original county seat of Randolph County.At Beverly, the turnpike spanned the Tygart Valley River via the Beverly Covered Bridge (1845), a work of Lemuel Chenoweth (1811–1887), a local and master bridge builder.