Maintenance by the Alabama Highway Department was extended southeast from Natural Bridge to SR 5 near Jasper by 1957. In that year, in the renumbering of the state highways of Alabama, substantial changes were made to the route of SR 5. Both portions of it that had been concurrencies with US 43 – south of Thomasville and north of Phil Campbell – became SR 13, which essentially became the unsigned partner to US 43 across the state. SR 13 used a shorter highway between Bankston and Haleyville, joining SR 5 at Natural Bridge and making the north end of SR 5 an overlap with SR 13. US 43 has never been moved to this route.