Southwest Freeway (DC)

Interstate 395
Route information
Length:	13.31 mi (21.42 km) 9.91 miles (15.95 km) in Virginia 3.48 miles (5.60 km) in the District of Columbia
Major junctions
South end:	I‑95 / I‑495 in Springfield, VA
	US 1 in Arlington, VA George Washington Parkway in Arlington, VA US 1 in Washington, DC I‑695 in Washington, DC
North end:	US 50 in Washington, DC
Highway system
Interstate Highway System Main Auxiliary Suffixed Business Future Virginia Routes Interstate U.S. Primary Secondary Byways History Streets and Highways of Washington, D.C. Interstate U.S D.C. State-Named Streets ← SR 394 VA SR 396 → ← DC 295 DC I‑495 →

Interstate 395 (I-395) in Washington, D.C., and Virginia is a 13.39-mile-long (21.55 km) spur route of Interstate 95 (I-95) that begins at an interchange with I-95 in Springfield and ends at an interchange with U.S. Route 50 (US 50) in northwest Washington, D.C. It passes underneath the National Mall near the U.S. Capitol and ends at a junction with U.S. Route 50 (US 50) at New York Avenue, roughly one mile (1.6 km) north of the 3rd Street Tunnel. Despite its proximity to I-395 in Maryland, the route is unrelated and unconnected.

The intersection where I-395, I-95, and the I-495 (Capital Beltway) meet is called the Springfield Interchange. Unofficially, this interchange is also referred to as The Mixing Bowl. This moniker causes confusion, because the intersection of I-395, Washington Boulevard, and Columbia Pike several miles north was historically known by that name, and continues to be recognized by the Virginia Department of Transportation as such.

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Wikipedia