The following highways are numbered 646:
Preceded by 645 | Lists of highways 646 | Succeeded by 647 |
State Route 6 (SR 6) is a state highway that is unsigned. It travels through the central part of the U.S. state of Tennessee from Lawrence County to Sumner County. The highway is related to the following U.S. Highways:
State Route 199 is a primary state highway in the U.S. state of Virginia. Known for most of its length as Humelsine Parkway, the state highway runs 14.13 miles (22.74 km) from Interstate 64 (I-64) and SR 646 in Lightfoot to SR 641 near Williamsburg. VA 199 forms a western loop of Williamsburg in York and James City Counties. The state highway, which is entirely a four-lane limited-access highway with a mix of intersections and interchanges, provides access from I-64 to several highways that serve attractions around Williamsburg, including U.S. Route 60 and Colonial Parkway, an automobile parkway that leads to Colonial Williamsburg, Jamestown, and Yorktown. VA 199 between its junctions with I-64 is named for Carlisle H. Humelsine, a former curator and president of Colonial Williamsburg, in 2004.
State Route 646 is a 28.78-mile-long (46.32 km) state highway in Harrison and Jefferson Counties in eastern Ohio. The route runs from US 250 in Stock Township, northwest of Cadiz, to SR 43 in Island Creek Township, just outside Wintersville.