The road was constructed as a part of the Pentagon Road Network during World War II to provide access to the newly constructed War Department headquarters buildings. The system included three cloverleaf interchanges which were "among the earliest such structures constructed in the United States." Those roads were transferred to the Virginia Department of Highways on December 17, 1964, and assigned the number Route 27. However, at that time, the Mixing Bowl included a ramp from the westbound Shirley Highway to the eastbound Route 27. When the high-occupancy vehicle lanes were added to I-395 in the 1970s, the Mixing Bowl was reconfigured so that the Route 27 lanes were separated as collector lanes from the through lanes of I-395. Because the collector lanes were built on the site of the ramp from westbound Shirley Highway to the eastbound Route 27, the ramp was replaced with a ramp from the eastbound Route 27 into the Pentagon South Parking Lot.