Route 25 is a numbered state highway located in Plymouth County and Barnstable County, Massachusetts, United States. The route is a nominally east–west freeway for its entire length, and less commonly known as the Blue Star Memorial Highway. 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.