Ohio State Route 45 is a north-south highway in Central Mahoning County. It runs from the Mahoning/Trumbull County Line, near West Austintown, to the Mahoning/Columbiana County Line, near Salem. OH St Rt 45 passes through the following towns in Mahoning County. Ellsworth Hickory Corners OH St Rt 45 is not multi-plexed in Mahoning County. OH St Rt 45 crosses the following highways in Mahoning County. Interstate 80, near West Austintown. (Interchange in Trumbull County) Ohio Turnpike, near West Austintown. (Interchange in Trumbull County) Interstate 76, near West Austintown. (NO Direct INterchange) U.S. Rt. 224, at Ellsworth. Ohio State Route 165, near Salem.
