In the 1953 New Jersey state highway renumbering, the state highways running concurrent with US 1/9 were removed, while Route 25T became US 1/9 Truck and Route 25 between the Tonnele Circle and the Holland Tunnel became US 1/9 Business (now Route 139). In 1964, the US 1/9 approaches to the George Washington Bridge, which were shared with US 46 on the New Jersey side, were rebuilt into a freeway that became a part of I-95. Between February 2006 and November 2008, the cloverleaf interchange with Route 35 in Woodbridge Township, which was the first cloverleaf interchange in the United States built in 1929 when this portion of US 1/9 was a part of Route 25, was replaced with a partial cloverleaf interchange, costing $34 million.