Missouri Route 137

The road that is Route 137 first appeared on state maps in 1933 as Route J.[2] However, in that year it was only a short spur from U.S 60 & 63, only going as far as the Texas/Howell County line. Route J was extended to Route 17 in Yukon the following year.[3] Route J was upgraded to Route 137 in 1937.[4] In 1964, Route 137 was extended to Licking, taking over a section of U.S Route 63 (U.S 63 was subsequently routed on to a new road to the west).[5] The former section of U.S 63 between Houston and Raymondville still remains part of the state system as Route B (Route T from 1964–75).[6]