Ohio State Route 63 runs east-west in West-Central Warren County. It goes from the Butler/Warren County Line, near Monroe, to U.S. Rt. 42; Ohio State Route 48/123, at Lebanon. OH St Rt 63 passes through the following towns in Warren County. Monroe Lebanon OH St Rt 63 is not multi-plexed in Warren County. OH St Rt 63 intersects the following highways in Warren County. Interstate 75, at Monroe. Ohio State Route 741, near Monroe. U.S. Rt. 42, at Lebanon. Ohio State Route 48, at Lebanon. Ohio State Route 123, at Lebanon.