West Virginia Route 273 is a north–south state highway entirely within Marion County, West Virginia.

The road was built as a four-lane divided highway along the former State Street corridor and fully opened to traffic on December 22, 2010.

[2] The southern terminus of the route is at exit #136 on Interstate 79.

Its northern end is at West Virginia Route 310 at the foot of the Robert H. Mollohan-Jefferson Street Bridge, where traffic can continue into downtown Fairmont.

The project features controlled-access right-of-way, a steel arch bridge over Interstate 79, and West Virginia's first two roundabouts.