 Continuing northwest through Wales , NY 78 remains a two @-@ lane rural street known as Strykersville Road until intersecting with US 20A ( Big Tree Road ) at a T @-@ intersection . US 20A and NY 78 become concurrent along Big Tree , proceeding west through the town of Wales . The routes remain a two @-@ lane residential street for a distance , intersecting with CR 383 ( Reiter Road ) as it winds west . Now in the town of Aurora , US 20A and NY 78 enter a large interchange with NY 400 ( the Aurora Expressway ) . A short distance later , the routes enter the village of East Aurora . Now known as Main Street , US 20A and NY 78 proceed west as a two @-@ lane village street , intersecting with NY 16 ( Olean Road ) and the southern continuation of CR 6 ( Pine Street ) . 
