MD 704 is a four- to six-lane divided highway that connects the northern Prince George's County communities of Seat Pleasant, Landover, Glenarden, and Lanham.

The highway was constructed along the right of way of the abandoned Washington, Baltimore and Annapolis Electric Railway (WB&A) in the early 1940s.

After leaving the city, the state highway crosses Cabin Branch and intersects Sheriff Road at an oblique angle.

MD 704 drops to four lanes again between Ardwick Ardmore Road and the five-ramp partial cloverleaf interchange at US 50 (John Hanson Highway), which is also unsigned I-595.

[1][3] MD 704 follows the abandoned right of way of the defunct WB&A Railway, an interurban railroad that included a north–south line between Washington and Baltimore and a branch to Annapolis from Naval Academy Junction in Odenton.

[4] The Maryland State Roads Commission converted the abandoned railroad right of way into a two-lane highway from the District of Columbia line to US 50 (now MD 450) near Lanham between 1942 and 1944.

[15] MD 704 was expanded to a divided highway from the District of Columbia boundary to Addison Road in Seat Pleasant in 1962.

[21] The MD 704 divided highway was extended east from the US 50 interchange to Forbes Boulevard in 1997 and Lottsford Vista Road in 1999.

[24] The MD 704A designation and the road itself were removed in 2004; the Vista Gardens shopping center now sits on the highway's general location.