U.S. Route 1 in the District of Columbia
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U.S. Route 1 passes through the District of Columbia between Arlington, Virginia, and Mount Rainier, Maryland, predominantly along surface streets.
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[edit] Route description
[edit] Northbound
U.S. Route 1 and Interstate 395 enter the District of Columbia from Virginia on the 14th Street Bridge. Route 1 traffic exits Route 395 from the left to 14th Street, S.W. After 14th Street crosses the National Mall, Route 1 turns right onto Constitution Avenue. It then turns left onto 6th Street, N.W., and then right onto Rhode Island Avenue. Route 1 continues on Rhode Island Avenue through Northeast Washington and into Maryland.
[edit] Southbound
U.S. Route 1 enters the District of Columbia from Maryland on Rhode Island Avenue. Route 1 turns left onto 6th Street, N.W., then right onto L Street, N.W., and then left onto 9th Street, N.W. It enters the Ninth Street Tunnel and joins Interstate 395, which it follows into Virginia.
[edit] Related routes
U.S. Route 1 Alternate joins U.S. Route 1 at the corner of 6th Street and New York Avenue, N.W.
[edit] Road concurrency
Northbound U.S. Route 1 is concurrent with eastbound U.S. Route 50 along Constitution Avenue from 14th Street to 6th Street, N.W., and along 6th Street from Constitution Avenue to New York Avenue, N.W. Southbound U.S. Route 1 is concurrent with westbound U.S. Route 50 along L Street between 6th and 9th streets, N.W., and along 9th Street from L Street to Constitution Avenue. Both northbound and southbound Route 1 have concurrencies with Interstate 395.
