The Baltimore-Washington Parkway is a main connection between Washington D.C. and the City of Balitmore. It runs in Prince George's, Anne Arundel, and Baltimore Counties, along within the southern parts of the City of Balitmore. The B-W Parkway is maintained by the National Park Service from the Washington D.C. line to Maryland State Route 175. From Maryland State Route 175 to the Balitmore City Limits is it controlled by the Maryland Maryland State Highway Administration. Within the City of Baltimore it is maintained by the Baltimore Department of Transportation. The park services portion is named for Gladys Noon Spellman. It provides acces to places as the NSA, Fort Meade, and Baltimore-Washington International Thurgood Marshall Airport. Just outside the Washington D.C. area it passes through the Beltsville Agricultural Research Center, and the Patuxent National Wildlife Research Refuge. The entire length is part of Maryland State Route 295. Although the section maintained by the National Park Service, is a unsigned portion of MD St Rt 295. The Baltimore-Washington Parkway passes through the following towns.
Cheverly Bladensburg Greenbelt Lithicum Pumphrey Lasdowne Baltimore The Baltimore-Washington Parkway crosses the following major highways in Maryland.