R-2915A, US 221/US 421 Interchange
This project consisted of widening 2.8 miles of existing roadway in Ashe and Watauga Counties from a 2-lane roadway to a 2-lane roadway with raised medians, superstreet intersection design, and the addition of a trumpet style interchange at the US 421/US 221 intersection. This project had numerous intersections designed to superstreet design standards to provide a higher level of safety for the traveling public having to cross over the opposing travel lanes.
Highways and streets
Work zone traffic control
Rehabilitation of interstates
Advanced planning reports