Roads of the Mid-South & West > Highways of Washington D.C. > U.S. Federal Route 1; Washington D.C.
 | U.S. Federal Route 1
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U.S. Federal Route 1 runs across Washington D.C. from the Virginia Line, at Arlington, to the Maryland Line, near Brentwood. It starts along 14th Street SW and heads toward Constitution Avenue NW. Then moves to 9th Street SW and 6th Street SW. To goto Maryland, U.S. Rt. 1 joins Rhode Island Avenue NE.
U.S. Rt. 1 is multi-plexed in Washington D.C.
Interstate 395, at the Potomac River.

U.S. Rt. 50, at Washington D.C.
U.S. Rt. 1 intersects the following highways in Washington D.C.
Interstate 395, at Washington D.C.
U.S. Rt. 50, at Penn Quarter.
ALT U.S. Rt. 1, at Capitol Hill.
U.S. Rt. 50, near Shaw.
U.S. Rt. 29, near Shaw.
Branches of U.S. Rt. 1 in Washington D.C.


NB I-395/U.S. Rt. 1 at the DC/Virginia Line.

SB I-395/U.S. Rt. 1 at the Potomac River.

Looking at the bridges that carry I-395 and U.S. 1 across the Potomac River from Virginia. Photo from the Washington Monument.

A BGS on NB I-395/U.S. Rt. 1.

A BGS on NB I-395/U.S. Rt. 1.

NB I-395/U.S. Rt. 1 at 14th Street SW.

NB U.S. Rt. 1 north of I-395.

NB U.S. Rt. 1 north of Maine Ave SW.

A guide marker on SB ALT U.S. Rt. 1.

A BGS on EB U.S. Rt. 50.
23 November 2025