the Suitland Parkway, Dower House Road, and Westphalia Road. There is also a planning study underway to explore building a new bridge adjacent to the Governor Thomas Johnson Bridge and expanding MD 4 to a four-lane divided highway between MD 2 at Solomons and MD 235 in California. Junction list See also References External links MDRoads: MD 4 MD 4 at AARoads.com Maryland Roads - MD 4 004 Maryland Route 004 Maryland Route 004 Maryland Route 004 Maryland Route 004