Route 27 begins at an interchange with US 50. It then has an interchange with 2nd Street South, which serves as an entrance to Fort Myer. The next interchange with Route 244 offers a very short merge area because of the proximity to the exit ramps to I-395 and Arlington Ridge Road. The Mixing Bowl is the first interchange in Northern Virginia with a three level bridge—ramp from I-395 to westbound Route 27 on the lowest level, eastbound Route 27 to Mixing Bowl in the middle; and southbound I-395 on top. In 1970 this was followed by a second three level stack—Joyce Street South on the lowest level, eastbound Route 27 on the middle bridge and I-395 on the top level.