Virginia State Route 256
State Route 256 is a primary state highway in the U.S. state of Virginia. Known for most of its length as Weyers Cave Road, the state highway runs from U.S. Route 11 near Weyers Cave east to US 340 in Grottoes. SR 256 connects Interstate 81 with Weyers Cave in northern Augusta County and Grottoes, which is home to Grand Caverns, in southeastern Rockingham County.