US 6 until 1991, when the US 6 designation was moved to the Dennis J. Roberts Expressway replacing the expressway's previous designation of Route 195. Major intersections Johnston bypass route Marion–Wareham temporary route Cape Cod Canal bypass route U.S. Route 6 Bypass (US 6 Byp.) was signed along both sides of the Cape Cod Canal in Massachusetts opposite of mainline US 6, which also ran along both sides of the canal along two-way roads. At the eastern terminus of Route 25, US 6 eastbound once crossed the Cape Cod Canal via the Bourne Bridge then followed Sandwich Road along the south side of the canal to the Sagamore Bridge where it joined the Mid-Cape Highway on its way to Provincetown. US 6 westbound would leave the Mid-Cape Highway and cross the Sagamore Bridge then followed the Scenic Highway along the north side of the canal back to the Bourne Bridge. The opposite directions of those two roads were signed as US 6 Byp. (such that the eastbound bypass route was on the north side of the canal while the westbound was along the south side). Today, both directions of US 6 travels only along the north side of the canal along Scenic Highway. Sandwich Road is now signed "TO 6" from the Sagamore Bridge to the Bourne Bridge, although a single US 6 Byp. sign still exists along Sandwich Road just north of the Bourne Bridge rotary. South Dennis–East Dennis temporary route Harwich–Brewster temporary route References 06 U.S. Route 6 U.S. Highways in Utah U.S. Highways in Indiana U.S. Highways in Ohio U.S. Highways in Pennsylvania U.S. Highways in New York (state) U.S. Highways in Connecticut U.S. Highways in Rhode Island U.S. Highways in Massachusetts