The road from Buena Vista west to State Route 14 at McCormick's Gate (now the junction of U.S. Route 60 and State Route 608/Pathfinder Drive) was added in 1924. This became part of the SR 13 extension, but in 1928, SR 14 was rerouted to pass through Buena Vista and use that piece of road, and thus SR 13 was truncated to Buena Vista. In 1927 and 1928, the remaining pieces of SR 13 were added, making SR 13 a continuous route from SR 14 in Buena Vista east to Callao.