Mississippi Highway 178

Mississippi Highway 178
MS 178 is highlighted in red
Route information
Auxiliary route of US 78
Maintained by MDOT
Length	119.1 mi[1] (191.7 km) (126.160 mi according to state mileage)
Existed	1993–present
Western segment
Length	105.2 mi (169.3 km)
West end	Old Highway 78 at the Tennessee state line
Major intersections	MS 4 / MS 7 in Holly Springs I-22 / US 78 in Hickory Flat MS 5 / MS 705 in Hickory Flat MS 15 / MS 30 in New Albany MS 9 in Blue Springs I-22 / US 78 in Tupelo US 45 / MS 6 in Tupelo I-22 / US 78 in West Fulton
East end	Dirt road at the Tennessee Tombigbee Waterway
Eastern segment
Length	13.9 mi (22.4 km)
West end	Access Road in Fulton (at the Tennessee Tombigbee Waterway)
Major intersections	MS 25 near Fulton MS 23 in Tremont
East end	Dead end near the Alabama state line
Location
Country	United States
State	Mississippi
Counties	Desoto, Marshall, Benton, Union, Pontotoc, Lee, Itawamba
Highway system
Mississippi State Highway System Interstate US State
← MS 172 → MS 182

Mississippi Highway 178 (MS 178), or simply "Old 78", is a 119.1-mile-long (191.7 km) east-west state highway across the northern portion of the state of Mississippi. It is the former alignment of U.S. Route 78 (US 78), used from the 1940s until the 1990s. With the exception of a break at the Tennessee-Tombigbee Waterway in Fulton, MS 178 is a complete route from Memphis, Tennessee, to the Alabama state line.