The parkway had a short divided highway segment between the trumpet interchange and its split with MD 337 at a directional intersection, from which the parkway was two lanes along the current eastbound carriageway; the westbound carriageway was only graded and would be completed later. The portion of MD 337 and Suitland Parkway between the trumpet interchange and MD 4 was transferred from federal to state maintenance in 1970.
The parkway had a short section with divided lanes between the trumpet interchange and its split with MD 337, which was a directional intersection. The eastbound lane was two lanes, while the westbound lane was only graded and would be completed later. In 1970, the portion of MD 337 and Suitland Parkway between the trumpet interchange and MD 4 was transferred from federal to state maintenance.