U.S. Route 50 (US 50) is a major east–west route of the
U.S. Highway system, stretching just over from
Ocean City, Maryland, on the Atlantic Ocean, to
West Sacramento, California, nearly to the Pacific Ocean. In the
District of Columbia, US 50 passes between
Arlington County, Virginia, and
Prince George's County, Maryland, predominantly along surface streets, including a part of
Constitution Avenue along the
National Mall.