 SR 240 was a state route in the Scioto River valley near Lucasville.The route existed from 1924 until 1938 and always consisted as a connector between SR 104 (from 1924 until 1926, also presently) or SR 112 (after 1927) and U.S. Route 23 in Ohio in Lucasville via a bridge over the river.The route became a part of SR 348 in 1939 though this specific bridge has since been removed.