 MD 424 veers northwest, expands to a four-lane divided highway, and has a four-ramp partial cloverleaf interchange with John Hanson Highway, a freeway that carries US 50, US 301, and unsigned Interstate 595.A park and ride lot serving MTA Maryland commuter buses is located at the southeast corner of this interchange.MD 424 reduces to two lanes, veers north, and passes to the west of the historic home Rosehill before intersecting MD 450 (Defense Highway) on the southeastern edge of Crofton.