 At this point, the freeway ends and US 13/US 58/US 460 head east-northeast on Portsmouth Boulevard, a six-lane expressway-style divided highway that passes through dense forests at the northern edge of the Great Dismal Swamp, with CSX's Portsmouth Subdivision parallel a short distance to the south.In this area, the roadway passes a pair of weigh stations serving both sides of the road.Along this stretch, US 13/US 58/US 460 cross into the city of Chesapeake and continue through wooded areas with some commercial development, passing to the south of the Hampton Roads Executive Airport.