240 followed New Hampshire Avenue (and US 29) northeast for one block and then turning directly north on 22nd Street (one way northbound) to Massachusetts Avenue, where it turned northwest. Southbound from Massachusetts Avenue on 22nd it forked onto 23rd Street (one way southbound) to Washington Circle. The southern terminus of US 240 Alternate was rerouted down Florida Avenue from Connecticut Avenue to connect with US 240 at the intersection of Massachusetts Avenue, 22nd Street, and Florida Avenue. Maryland US 240 followed a divided highway north to its intersection with MD 191, which as today headed west as Bradley Boulevard, a divided highway, and east as Bradley Lane. The U.S. highway became undivided and intersected MD 82 (Leland Street) and crossed over the Georgetown Branch of the Baltimore & Ohio Railroad before meeting the southern and western ends of MD 187 (Old Georgetown Road) and MD 410 (East–West Highway), respectively, in the center of Bethesda. This intersection also served as the northern end of US 240 Alternate, which headed east along MD 410 to Connecticut Avenue, which was then MD 193 and is now MD 185. North of Bethesda, US 240 met the western end of MD 702 (Jones Bridge Road) just south of the National Naval Medical Center. The highway descended into the valley of Rock Creek then left the valley and met the western end of MD 547 (Strathmore Avenue). US 240 intersected Montrose Road and then the northern end of MD 187 (Old Georgetown Road) at the village of Montrose. The highway began to parallel the Baltimore & Ohio Railroad (now CSX's Metropolitan Subdivision) as it approached the town of Rockville. US 240 entered the county seat at Dodge Street and had an acute intersection with MD 28 (Viers Mill Road). The two highways ran concurrently northwest along a street that no longer exists to Montgomery Avenue, then west on Montgomery Avenue to Washington Street. There, MD 28 continued west on Montgomery Avenue and US 240 continued out of town on Washington Street. The U.S. Highway paralleled the railroad to Derwood, where the highway intersected MD 688 (Redland Road) just north of Indianola Drive. US 240 intersected Shady Grove Road and entered the town of Gaithersburg at Summit Avenue. The highway crossed over the Baltimore & Ohio Railroad between a pair of oblique intersections with MD 124 (West and East Diamond Avenue), which ran concurrently with US