Southern Avenue (Washington, D.C.) in the context of "Capitol Heights, Maryland"

South Capitol Street is a major street dividing the southeast and southwest quadrants of Washington, D.C., in the United States. It runs south from the United States Capitol to the D.C.–Maryland line, intersecting with Southern Avenue. After it enters Maryland, the street becomes Indian Head Highway (Maryland Route 210) at the Eastover Shopping Center, a terminal or transfer point of many bus routes.

Maryland Route 214 (MD 214) is a state highway in the U.S. state of Maryland. Known for most of its length as Central Avenue, the highway runs 24.97 miles (40.19 km) from Southern Avenue and East Capitol Street at the District of Columbia boundary in Capitol Heights east to Beverley Beach. MD 214 connects the central Prince George's County suburbs of Capitol Heights, Seat Pleasant, Largo, and Bowie with the southern Anne Arundel County communities of Davidsonville and Edgewater and several beach villages along the Chesapeake Bay. The highway connects Interstate 95 (I-95)/I-495 (Capital Beltway) to Northwest Stadium, Six Flags America, and several stations of the Washington Metro's Blue and Silver lines, which the route parallels between Capitol Heights and Largo.

MD 214 was constructed as part of three state highways. MD 214 proper was constructed in the mid-1910s from Washington to Largo and extended east to what is now U.S. Route 301 (US 301) through the 1920s. MD 254 was built from MD 2 in Edgewater west to Davidsonville in the early to mid-1920s. MD 253 was constructed from the modern end of the highway southeast to Beverley Beach between the mid-1920s and early 1930s. The gap between Bowie and Davidsonville was filled in the mid-1930s; MD 214 was extended east across a new Patuxent River bridge and took over MD 254's route to Edgewater. In the late 1940s, MD 214 was relocated through Edgewater and extended along most of MD 253 to Beverley Beach. The state highway was widened in Prince George's County in the 1930s and again in the 1950s, and from US 301 to MD 2 in the 1940s and again in the 1950s. MD 214 was expanded to a divided highway at US 301 in the late 1950s, at its interchange with the Capital Beltway in the mid-1960s, and when it bypassed Capitol Heights in the late 1960s. The two-lane gaps between those three segments were filled in the 1980s and 1990s.

Maryland Route 4 (MD 4) is a state highway in the U.S. state of Maryland. The highway runs 64.85 miles (104.37 km) from MD 5 in Leonardtown north to Southern Avenue in Suitland at the District of Columbia boundary, beyond which the highway continues into Washington as Pennsylvania Avenue. MD 4 is a four- to six-lane highway that connects Washington and communities around Interstate 95 (I-95)/I-495 (Capital Beltway) with southern Prince George's County with southwestern Anne Arundel County. The highway is the primary highway for the length of Calvert County, during most of which the route runs concurrently with MD 2. MD 4 also connects Calvert and St. Mary's counties via the Governor Thomas Johnson Bridge across the Patuxent River. The highway connects the Southern Maryland county seats of Leonardtown, Prince Frederick, and Upper Marlboro.

MD 4 is one of the original Maryland state highways. The state highway followed roughly its present alignment through Prince George's County, then headed east through Anne Arundel County along what is now MD 408. In the 1960s, MD 4 took over MD 416 (Southern Maryland Boulevard) southeast to Sunderland and joined MD 2 all the way to Solomons. After the Governor Thomas Johnson Bridge opened in the late 1970s, MD 4 was extended west from Solomons to Leonardtown. MD 4 has been upgraded to a divided highway for most of its length, beginning in the early 1960s from Washington, reaching Solomons in the mid-1980s, and expected to continue into St. Mary's County in the future.

Eastern Avenue is one of three boundary streets between Washington, D.C., and the state of Maryland. It follows a northwest-to-southeast line, beginning at the intersection of 16th Street NW (a north-south street in the District of Columbia) and Colesville Road (a street in Montgomery County in the state of Maryland). It intersects with Blair Road NW, and ceases to exist for about 1,000 feet (300 m). Another interruption occurs at Cedar Street NW. A 3,000-foot (910 m) interruption occurs again at Galloway Street NE, where the park land of the North Michigan Park Recreation Center exists. It continues without interruption until it reaches Bladensburg Road NE. There is a 1.8-mile (2.9 km) interruption in the avenue along Fort Lincoln Cemetery. The avenue has no crossing over New York Avenue NE or the Anacostia River, or through Anacostia Park. It resumes at Kenilworth Avenue NE, with its terminus at its junction with Southern Avenue.

Several historic or important buildings are located on Eastern Avenue, and a number of important people once lived on the street. Eastern Avenue forms one of the borders of the Deanwood neighborhood in the District of Columbia, a historic African American community. Several historically important Deanwood-area churches and schools are located on Eastern Avenue. William Pittman, one of the United States' first African American architects and a son-in-law of Booker T. Washington, lived on Eastern Avenue. The Lucinda Cady House (also known as the Cady-Lee House), located at 7064 Eastern Avenue NW, is a restored Queen Anne-Victorian style home built in 1887 which is listed on the National Register of Historic Places. The headquarters of the missionary arm and the relief agency of the worldwide Seventh-day Adventist Church were once located at 6840 Eastern Avenue NW.