Mississippi State Route 178 is a east-west highway in Northeastern De Soto County. MS St Rt 178 passes through the following town in De Soto County. Olive Branch
MS St Rt 178 is not multi-plexed in De Soto County. MS St Rt 178 crosses the following highways in De Soto County. Mississippi State Route 305, at Olive Branch. Mississippi State Route 302, at Olive Branch. (NO INTERCHANGE)
