sentences:  By 1936, the route had become the primary route of US-40, with the old US-40N becoming U.S. Route 24.By 1969, after the majority of Interstate 70 had been completed, US-40 was rerouted to be concurrent with the newly constructed highway, and the old route of US-40 between Ellsworth and Salina was resigned as K-140.The routing of K-140 has remained unchanged since.