at a directional intersection with US 1 Alternate in the town of Bladensburg just southeast of the confluence of the Northwest and Northeast Branches of the Anacostia River to form the river proper. US 1 Alternate heads southwest as Bladensburg Road into Colmar Manor and north as Baltimore Avenue toward Hyattsville. Adjacent to the center intersection of the junction is the Peace Cross, a memorial to World War I soldiers. MD 450 heads east as Annapolis Road, a four-lane road with a center left-turn lane that passes under the Alexandria Extension of CSX's Capital Subdivision railroad line. East of the railroad underpass, the highway has a partial cloverleaf interchange with MD 201 (Kenilworth Avenue). 48th Street, which connects MD 450 with northbound MD 201 in both directions, is unsigned MD 769C. Within and surrounding the interchange are the historic William Hilleary House, Market Master's House, and the estate Bostwick. East of 48th Street, MD 450 intersects the southern end of Edmonston Road, which is unsigned MD 769B. The highway meets the northern end of MD 202 (Landover Road) at an acute intersection; there is no direct access from westbound MD 450 to southbound MD 202. MD 450 continues as a six-lane divided highway and leaves the town of Bladensburg at its partial cloverleaf interchange with the Baltimore–Washington Parkway. The highway passes between the town of Landover Hills and the unincorporated area of Woodlawn and intersects MD 410 (Veterans Parkway). MD 450 briefly passes through the city of New Carrollton, intersecting 85th Avenue (unsigned MD 433), before its partial cloverleaf interchange with Interstate 95 (I-95)/I-495 (Capital Beltway). East of the Beltway in the center of Lanham, westbound MD 450 has a signalized right-in/right-out intersection with Princess Garden Parkway and the route has a partial interchange with the west end of MD 564 (Lanham Severn Road). Eastbound MD 450 has access to Princess Garden Parkway by turning around at MD 564's intersection with Cipriano Road, but there is no direct access from MD 564 to eastbound MD 450, from westbound MD 450 to MD 564, or from Princess Garden Parkway to either eastbound MD 450 or MD 564. MD 450 reduces to four lanes on its bridge across the ramp from eastbound MD 450 to MD 564 and Amtrak's Northeast Corridor railroad line. MD 450 meets the northern end of Whitfield Chapel Road just east of the railroad bridge. The highway passes