Known as Martin Boulevard, the state highway runs 1.97 miles (3.17 km) from MD 150 in Middle River north to U.S. Route 40 (US 40) in Rossville.

The four-lane divided highway continues south as Chesapeake Park Place, which leads into Lockheed Martin's Middle River Complex, a facility of the company's Mission Systems & Sensors business segment.

MD 700 gently curves to the northwest and crosses Compass Road and Kelso Drive before reaching its northern terminus at a modified trumpet interchange with US 40 (Pulaski Highway).

MD 493 began at a creek crossing due south of Martin Plaza Shopping Plaza, headed east along Orems Road and present-day Old Orems Road to an at-grade railroad crossing of the Pennsylvania Railroad, then continued east on present-day Baker Avenue to Eastern Avenue just west of the Baker Avenue right-in/right-out junction with MD 700.

A four-lane divided highway with interchanges at US 40 and MD 150 and an underpass of what was then the Pennsylvania Railroad was included in a list of access roads prepared by the Maryland State Roads Commission for the United States Department of War in 1940.