Ga Union là trung tâm giao thông chính ở Washington DC. Ga Union chứa các kết nối với những điều sau

Interstate 395 provides access to the National Mall from the South. Interstate 495, New York Avenue, Rock Creek and Potomac Parkway, George Washington Memorial Parkway, and the Cabin John Parkway provide access from the North. Interstate 66, U.S. Routes 50 and 29 provide access from the West. U.S. Routes 50, 1, and 4 provide access from the East.