172, which gives access to the Warren Prairie Natural Area just east of the Drew County line. The route continues to Monticello to McGehee, where it meets US 65. US 278 overlaps US 65 southward for until they separate in Lake Village. There, US 65 splits off and US 278 overlaps US 82 east to the Mississippi River, where US 82/US 278 crosses into Mississippi. Long-term plans are to move US 278 to the Charles W. Dean Bridge, which is part of the proposed extension of I-69. Mississippi US 82/US 278 goes through Greenville to Leland, where US 278 separates from US 82 at US 61. US 278 then joins US 61 northward through Cleveland before splitting in Clarksdale. East of Clarksdale, it overlaps Mississippi Highway 6 through Batesville, Oxford, and Pontotoc before reaching Tupelo. At Tupelo, MS 6 separates from US 278 while US 278 overlaps US 45 south to New Wren. From New Wren, US 278 continues east through Amory before entering Alabama. Alabama US 278 enters Alabama between Greenwood Springs, Mississippi, and Sulligent, Alabama. As in Georgia, this and all U.S routes are partnered with state routes; however, there are few instances throughout the state where the state route number is posted. From the Mississippi state line to Guin, US 278 is paired with State Route 118. From Hamilton to the Georgia state line, US 278 is paired with State Route 74. US 278 junctions with US 431 at Gadsden. The two routes overlap until they split at Attalla. US 278 overlaps US 43 between Hamilton and Guin. Prior to the completion of Corridor X (Future I-22), these two routes also overlapped US 78 between these two towns; eastbound US 78 traveled in the same direction as westbound US 278. Georgia In Atlanta, US 278 runs along Donald Lee Hollowell Parkway (Bankhead Highway), North Avenue, briefly along Piedmont Road and Ponce de Leon Avenue. Outside the Perimeter, US 278 runs along Covington Highway. In Lithonia, Georgia, at the intersection with Turner Hill Road (SR 124), US 278 merges with I-20 for . It leaves I-20 at exit 90, in Covington, Georgia. US 278 is co-signed with a state route for its entire length in Georgia, as are all U.S. Highways in the state. From the Alabama line into Lithia Springs, it is co-signed with SR 6. From Lithia Springs through Atlanta, it is merged with US 78/SR