Twin Bridges Motor Hotel

Fort Jackson was an American Civil War-era fortification in Virginia that defended the southern end of the Long Bridge, near Washington, D.C. Long Bridge connected Washington, D.C. to Northern Virginia and served as a vital transportation artery for the Union Army during the war. Fort Jackson was named for Jackson City, a seedy suburb of Washington that had been established on the south side of the Long Bridge in 1835. It was built in the days immediately following the Union Army's occupation of Northern Virginia in May 1861. The fort was initially armed with four cannon used to protect the bridge, but these were removed after the completion of the Arlington Line, a line of defenses built to the south. After 1862, the fort lacked weapons except for small arms and consisted of a wooden palisade backed by earthworks. Two cannon were restored to the fort in 1864 following the Battle of Fort Stevens. The garrison consisted of a single company of Union soldiers who inspected traffic crossing the bridge and guarded it from potential saboteurs. Following the final surrender of the Confederate States of America in 1865, Fort Jackson was abandoned. The lumber used in its construction was promptly salvaged for firewood and construction materials and, due to its proximity to the Long Bridge, the earthworks were flattened in order to provide easier access to Long Bridge. In the early 20th century, the fort's site was used for the footings and approaches to several bridges connecting Virginia and Washington. Today, no trace of the fort remains, though the site of the fort is contained within Arlington County's Long Bridge Park, and a National Park Service 2004 survey of the site indicated some archaeological remnants may still remain beneath the park.

Boundary Channel is a channel off the Potomac River in Washington, D.C. The channel begins at the northwestern tip of Columbia Island extends southward between Columbia Island and the Virginia shoreline. It curves around the southern tip of Columbia Island before heading northeast to exit into the Potomac River. At the southwestern tip of Columbia Island, the Boundary Channel widens into the manmade Pentagon Lagoon.

Washington Airport was the second major airport to serve the city of Washington, D.C., in the United States. Located in Arlington, Virginia, near the intersection of the Highway Bridge and the Mount Vernon Parkway (where The Pentagon's south parking lots, Metrobus bus bays, and a portion of Interstate-395 now exist). The first airport to serve the city was Hoover Field, a private airfield constructed in 1925. Washington Airport, a private airport triple the size of Hoover Field, was built literally across the road in late 1927. The airfield suffered from short and unpaved runways, numerous life-threatening obstructions around the field, poor visibility (due to a burning garbage dump adjacent to each field), and poor drainage. Washington Airport nearly went bankrupt in 1933, and it was auctioned off to a new owner. The new owner also owned Hoover Field, and merged the two into a single airfield, Washington-Hoover Airport. Washington-Hoover Airport closed in 1941 when Washington National Airport (now Ronald Reagan Washington National Airport), a replacement facility, was opened.

Hoover Field was an early airport serving the city of Washington, D.C. It was constructed as a private airfield in 1925, but opened to public commercial use on July 16, 1926. It was located in Arlington, Virginia, near the intersection of the Highway Bridge and the Mount Vernon Memorial Parkway, where The Pentagon and its northern parking lots now stand.Considered one of the most hazardous airfields in the United States, Hoover Field suffered from short and unpaved runways, numerous life-threatening obstructions around the field, poor visibility (due to a burning garbage dump to its northwest), and poor drainage. It was purchased by the owner of nearby Washington Airport in early 1929, causing a brief merger of the two fields, but was sold to a new owner just 12 months later. It nearly went bankrupt in 1933, and was sold at auction and merged with Washington Airport to become Washington-Hoover Airport on August 2, 1933. Washington-Hoover Airport closed in June 1941. Washington National Airport (now Ronald Reagan Washington National Airport) was built as its replacement.

Washington-Hoover Airport was an airport serving the city of Washington, D.C., in the United States from 1933 to 1941. It was created by the merger of Hoover Field and Washington Airport on August 2, 1933. It was in Arlington, Virginia, near the intersection of the Highway Bridge and the Mount Vernon Memorial Highway (where The Pentagon and its parking lots now stand). Washington-Hoover Airport, like its predecessors, suffered from safety problems, short runways, and little room to grow. It closed for public use in June 1941, and the United States Department of War purchased the site in September, closing it for good. Washington National Airport (now known as Ronald Reagan Washington National Airport), which opened in June 1941, was built as its replacement. The Pentagon now occupies the site.

Air Florida Flight 90 was a scheduled U.S. domestic passenger flight operated by Air Florida from Washington National Airport (now Ronald Reagan Washington National Airport) to Fort Lauderdale–Hollywood International Airport, with an intermediate stopover at Tampa International Airport. On January 13, 1982, the Boeing 737-222 registered as N62AF crashed into the 14th Street Bridge over the Potomac River.Striking the bridge, which carries Interstate 395 between Washington, DC, and Arlington County, Virginia, it hit seven occupied vehicles and destroyed 97 feet (30 m) of guard rail: 5  before plunging through the ice into the Potomac River. The aircraft was carrying 74 passengers and five crew members. Only four passengers and one crew member (a flight attendant) were rescued from the crash and survived. Another passenger, Arland D. Williams, Jr., assisted in the rescue of the survivors, but drowned before he could be rescued. Four motorists on the bridge were killed. The survivors were rescued from the icy river by civilians and professionals. President Ronald Reagan commended these acts during his State of the Union speech a few days later. The National Transportation Safety Board (NTSB) determined that the cause of the accident was pilot error. The pilots failed to switch on the engines' internal ice protection systems, used reverse thrust in a snowstorm prior to takeoff, tried to use the jet exhaust of a plane in front of them to melt their ice, and failed to abandon the takeoff even after detecting a power problem while taxiing and having ice and snow build up on the wings.

The 14th Street bridges refers to the three bridges near each other that cross the Potomac River, connecting Arlington, Virginia and Washington, D.C. Sometimes the two nearby rail bridges are included as part of the 14th Street bridge complex. A major gateway for automotive, bicycle and rail traffic, the bridge complex is named for 14th Street (U.S. Route 1), which feeds automotive traffic into it on the D.C. end. The complex contains three four-lane automobile bridges — including, from west to east, one southbound, one bi-directional, and one northbound — that carry Interstate 395 (I-395) and U.S. Route 1 (US 1) traffic, as well as a bicycle and pedestrian lane on the southbound bridge. In addition, the complex contains two rail bridges, one of which carries the Yellow Line of the Washington Metro; the other of which, the only mainline rail crossing of the Potomac River to Virginia, carries a CSX Transportation rail line. The five bridges, from west to east are the George Mason Memorial Bridge, the Rochambeau Bridge, the Arland D. Williams, Jr. Memorial Bridge, the Charles R. Fenwick Bridge and the Long Bridge. At the north end of the bridges, in East Potomac Park, the three roadways connect to a pair of two-way bridges over the Washington Channel into downtown Washington, one connecting to traffic (including northbound US 1) north onto 14th Street, and the other connecting to I-395 traffic on the Southwest Freeway. The Metro line connects to a tunnel in the East Potomac Park, and the main line railroad from the Long Bridge passes over I-395 and runs over the Washington Channel just downstream of the 14th Street approach before turning northeast along the line of Maryland Avenue. On January 13, 1982, 78 people were killed when Air Florida Flight 90 clipped the northbound I-395 span of the 14th Street bridge during rush hour and crashed into the Potomac river. The repaired span was renamed in honor of Arland D. Williams Jr., a passenger on the plane who survived the initial crash, but drowned after repeatedly passing a helicopter rescue line to other survivors.

The Navy – Merchant Marine Memorial, located in Lady Bird Johnson Park on Columbia Island in Washington, D.C., is a monument honoring sailors of the United States Navy, Coast Guard, the United States Merchant Marine, the NOAA Commissioned Officer Corps and others who died at sea during World War I and other times. It was designed in 1922 by Harvey Wiley Corbett and sculpted by Ernesto Begni del Piatta, who died before it could be completed. It was cast in a foundry in Cleveland. Ground was broken on the memorial in 1930, with the foundation completed the following year and it was installed on October 18, 1934, but work on the base and landscaping was postponed due to lack of funding. A dedication ceremony was held on May 30, 1935. Funding was finally approved by Congress to finish the memorial in 1939 and work began anew the following September, to be completed by the end of the year.Nicknamed "Waves and Gulls," the memorial depicts seven seagulls above the crest of a wave. It is cast from aluminum and the base is made of green granite from New Hampshire (the base was originally concrete but replaced by the Works Progress Administration). It stands 35 feet (10.6 m) tall and 30 feet (9.1 m) wide. It is the first aluminum memorial in Washington, DC. The memorial reads: To the strong souls and ready valor of those men of the United States who in the Navy, the Merchant Marine and other paths of Activity upon the waters of the world have given life or still offer it in the performance of heroic deeds this monument is dedicated by a grateful people.

Gravelly Point is an area within the National Park Service's George Washington Memorial Parkway in Arlington County, Virginia, in the United States. It is located on the west side of the Potomac River, north of Roaches Run and Ronald Reagan Washington National Airport.The paved Mount Vernon Trail travels through the area. A rugby pitch hosts high school rugby matches. The area also has a boat launch and a Capital Bikeshare dock. Gravelly Point is a popular spot for plane spotters and others to watch planes take off and land from Reagan National Airport. Airplanes pass between 100 and 200 feet overhead when landing on Runway 19 or taking off from Runway 1.

Long Bridge is the common name used for a series of three bridges connecting Washington, D.C. to Arlington, Virginia over the Potomac River. The first was built in 1808 for foot, horse and stagecoach traffic. Bridges in the vicinity were repaired and replaced several times in the 19th century. The current bridge was built in 1904 and substantially modified in 1942 and has only been used for railroad traffic. It is owned by CSX Transportation and is used by CSX freight trains, Amtrak intercity trains, and Virginia Railway Express commuter trains. Norfolk Southern Railway has trackage rights on the bridge but does not exercise those rights. In 2019 Virginia announced that it would help fund and build a new rail bridge parallel to the existing one to double its capacity, following the plans that have been studied by the District Department of Transportation (DDOT) and Federal Railroad Administration (FRA) since 2011.

Fort Runyon was a timber and earthwork fort constructed by the Union Army following the occupation of northern Virginia in the American Civil War in order to defend the southern approaches to the Long Bridge as part of the defenses of Washington, D.C. during that war. The Columbia Turnpike and Alexandria and Loudon Railroad ran through the pentagonal structure, which controlled access to Washington via the Long Bridge. With a perimeter of almost 1,500 yards (1,400 m), and due to its unusual shape it was approximately the same size, shape, and in almost the same location as the Pentagon, built 80 years later.Runyon was built immediately after the entry of Union forces into Virginia on May 24, 1861, on the land of James Roach, a Washington building contractor. Fort Runyon was the largest fort in the ring of defenses that protected Washington during the Civil War and was named after Brigadier General Theodore Runyon, commander of the Fourth Division of the Army of Northeastern Virginia during the First Battle of Bull Run. Union soldiers garrisoned the fort until its dismantling following the end of the Civil War in 1865. Today, no trace of the fort remains on the site, though a historical marker has been constructed by the Arlington Historical Society.

Pentagon Transit Center is a split platform station on the Washington Metro located adjacent to The Pentagon in Arlington, Virginia. The station was opened on July 1, 1977, and is operated by the Washington Metropolitan Area Transit Authority. Providing service for both the Blue and Yellow Lines, the station is where the two lines diverge and thus acts as a transfer point. Northbound, the Blue Line continues through Virginia and the Yellow Line crosses the Potomac River into the District of Columbia. The station opened on July 1, 1977 with the completion of 11.8 miles (19.0 km) of rail between National Airport and RFK Stadium.