MD 198 continues east as Sandy Spring Road, which drops to four lanes as the road leaves Burtonsville. The route crosses the Montgomery–Prince George's county line and temporarily expands to six lanes between the intersection with Old Gunpowder Road and Bond Mill Road and the state highway's junction with I-95 in West Laurel. The junction is a cloverleaf interchange with a flyover ramp from westbound MD 198 to southbound I-95. MD 198 again becomes six lanes at the east end of the interchange where the highway enters the city of Laurel. At Ninth Street, the state highway splits into a one-way pair that uses Gorman Avenue eastbound and Talbott Avenue westbound. MD 198 meets the southern end of MD 216 (Seventh Street) and intersects US 1, which comprises a one-way pair that uses Washington Boulevard southbound and Second Street northbound. East of US 1, Gorman and Talbott Avenues come together to form Fort Meade Road, a six-lane divided highway that crosses CSX's Capital Subdivision, which carries MARC's Camden Line.