end of Adelphi Road. The six-lane divided highway continues east, between Hyattsville to the south and University Park to the north. Eventually the south side of the highway is flanked by the town of Riverdale Park. As MD 410 crosses US 1 (Baltimore Avenue), it fully enters Riverdale Park, where it reduces to four lanes. It crosses over CSX's Capital Subdivision railroad line, which also carries the MARC Camden Line. (The Camden Line can be boarded at the Riverdale station within the Riverdale Park Historic District to the south, which also contains the Riversdale Mansion.) A tributary of the Northeast Branch Anacostia River briefly runs within the median of the highway shortly before it crosses over the Northeast Branch. Then MD 410 intersects and crosses MD 201 (Kenilworth Avenue) leaving the town of Riverdale Park. The highway continues as Riverdale Road, a four-lane road with a center turn lane, through the unincorporated area of East Riverdale on its way to a diamond interchange with the Baltimore–Washington Parkway (unsigned MD 295). MD 410 then continues east on Riverdale Road and turns southeast onto Veterans Parkway, a four-lane divided highway (while Riverdale Road continues toward New Carrollton). The divided highway briefly enters the city of New Carrollton around its intersection with MD 450 (Annapolis Road). MD 410 continues south and intersects Ellin Road (unsigned MD 433) before passing through a diamond interchange with US 50 (John Hanson Highway). The highway crosses over US 50; Amtrak's Northeast Corridor railroad line, also used by MARC's Penn Line; and Washington Metro's Orange Line. South of the railroad tracks, MD 410 quickly reaches its eastern terminus at Pennsy Drive. The nearby New Carrollton station serves as the eastern terminus of the Orange Line subway and hosts MARC and Amtrak service and commuter and intercity bus service. Nearby Ardwick Ardmore Road provides access to the primary entrance to the Metro New Carrollton station. Secondary access to the station is provided by Ellin Road north of US 50. History The Bethesda-Silver Spring Highway was conceived in the late 1920s as a means of directly connecting the two Montgomery County inner suburbs on the north side of Washington. The highway was under construction between 1927 and 1929. The first portion opened on December 7, 1929, between then-US 240 in Bethesda and Sixteenth Street, which itself had been extended north from the District of Columbia line. It was signed as