The Santiam Highway (U.S. Route 20) and the McKenzie Highway (Oregon Route 126) merge briefly to form Cascade Avenue, the main thoroughfare through downtown Sisters. On Cascade Avenue, there is a lot of pedestrian traffic and many specialty stores and galleries. East of Sisters the two highways split, with 126 heading to Redmond and 20 going to Bend. West of Sisters, the road splits once more, with the McKenzie Highway becoming Oregon Route 242 and running west over the McKenzie Pass (a summertime-only scenic route over the Cascades.) The Santiam Highway proceeds over the Santiam Pass.