 The route initially followed Oakwood Road and Genesee Street from the hamlet of Oakwood to Auburn, where it ended at an intersection with NY 34 (South Street) in downtown Auburn.A divided highway was built west of Auburn , connecting the overlapping routes of US 20 and NY 5 to NY 326.US 20 and NY 5 were rerouted to follow the new highway south to NY 326, and all three routes continued east into downtown on Genesee Street.