Mississippi Highway 309
Mississippi Highway 309 is a two-lane, north–south highway in Marshall County. It runs from the Mississippi–Tennessee state line south through western Marshall County to its southern terminus at MS 4, just east of the community of Chulahoma.Route description
MS 309's southern terminus is just east of the community of Chulahoma at MS 4. The highway travels north, entering the town of Byhalia and passing through a grade-separated interchange with Interstate 22 and U.S. Route 78. After leaving Byhalia, the highway crosses the Coldwater River before intersecting MS 302 at Barton. From here, the highway travels to its northern terminus at the Tennessee state line, where the road continues as Byhalia Road toward Collierville in Shelby County.