The SR 114 designation was first used in the early 1930s along the route between SR 14 and SR 5, a route that later became SR 113. In the early to mid 1930s the eastern segment was rerouted to its modern route and the western segment was added, running between Illinois state line and SR 43. The central segment of SR 114 was commissioned in the early to mid 1950s along a similar route as it is today, but was north of the modern route. By 1960 the central segment was moved onto its current alignment. The entire roadway was paved by 1971. The western end was moved from the Illinois state line to US 41 in the late 2000s or early 2010s.