Arlington National Cemetery is located across the Potomac River from Washington, D.C. at the end of Memorial Avenue, the parkway which extends from Memorial Bridge, near the Lincoln Memorial. Along this parkway is the rotary intersection with the scenic George Washington Memorial Parkway. Arlington is accessible from the major roadways in the D.C. area like Interstate 95, the Capital Beltway (I-495), the George Washington Memorial Parkway and the Baltimore-Washington Parkway (I-295).
Source: http://www.arlingtoncemetery.mil/Visit
Interactive Route Map for Arlington Cemetery
Check the below map for direction for Arlington Cemetery.