At this point, Route 27 becomes a part of the collector lanes and ramps of the Mixing Bowl until its second interchange with Route 244. Also, coincident with the second Route 244 interchange, Route 27 is the northern terminus of the reversible high occupancy vehicle lanes of I-395. The westbound entrance to these lanes have a series of manually closed barriers to prevent an accidental oncoming collision during the hours each day when traffic flows to the east on the HOV lanes. The final interchange in Virginia accesses Route 110, the Pentagon North Parking Lot and Boundary Channel Drive. Although the ramp from eastbound Route 27 to northbound Route 110 is open to the public, it is on the Pentagon Reservation and is patrolled by the Pentagon Police. The route ends at the Boundary Channel, which is the border with the District of Columbia.