The rest of the early Huntington Expressway, from Route 2 southeast across Interstate 95 and U.S. Route 1 to Route 12, was completed in 1966. It was then that the Route 10 designation was applied, and Route 2 was moved back to its present alignment. However, Route 10 did not end at Olneyville - it continued to the end of the bypass at Harris Avenue, and then took Harris Avenue, Eagle Street, Valley Street, River Avenue, Oneil Street, Veazie Street and Branch Avenue to end at Route 146.