OH St Rt 142 passes through the following towns in Madison County.
London West Jefferson OH St Rt 142 is multi-plexed in Madison County. U.S. Rt. 40, at West Jefferson. OH St Rt 142 intersects the following highways in Madison County. U.S. Rt. 42, at London. U.S. Rt. 40, at West Jefferson. U.S. Rt. 40, at West Jefferson. Interstate 70, near West Jefferson.