 Soon U.S. Route 58 came in from the northeast along with US 11, leaving only the piece east of US 11E on its own.A traffic survey resulted in the creation of a one-way pair in 1952, where southbound US 421 used Shelby Street, a block south of State Street in Tennessee, between Ninth Street (Commonwealth Avenue) and Fourth Street (Edgemont Avenue).US 58 eastbound moved to the same alignment, but turned north at Seventh Street to reach Piedmont Avenue.