interstate 395 (i-395) in washington, d.c., and virginia is a spur route of i-95 that begins at an interchange with i-95 in springfield and ends at an interchange with u.s. route 50 () in northwest washington, d.c. it passes underneath the national mall near the u.s. capitol and ends at a junction with us 50 at new york avenue, roughly north of the 3rd street tunnel. despite its proximity to i-395 in maryland, the route is unrelated and unconnected.