 An eastward continuation of Interstate 495, Route 25 provides freeway access to Cape Cod.The route's western terminus is at a trumpet interchange with I-495 and I-195 in Wareham.The route has three numbered interchanges along its length before terminating at the northern end of the Bourne Bridge in Bourne; the mainline of Route 25 continues across the bridge and over the Cape Cod Canal as Massachusetts Route 28 south.