a rebuilt Roosevelt Island parking lot that created a new route, with smoother curves for the Mount Vernon Trail, and the trail was also widened. The National Park Service has considered expanding the trail. In 2002, they performed a feasibility study on expanding it north to the American Legion Bridge. The design proposed was a mostly on-street route, with a pair of trail segments west of Glebe Road. Description The trail parallels the George Washington Memorial Parkway and the western bank of the Potomac River. Most of the northern half of the trail is open with views of the river and of Washington, D.C. The southern below Alexandria is largely wooded with limited river views. From its northern trailhead at a parking lot in Arlington County near Mile 17 and Theodore Roosevelt Island, the MVT travels south near the Potomac River until it turns inland to pass between the parkway and the west side of Ronald Reagan Washington National Airport. Before reaching the airport, the trail passes through Gravelly Point, where there are often views of arriving and departing airplanes. A connecting trail travels through the airport and provides access to the Ronald Reagan Washington National Airport Metro Station and the Abingdon Plantation historic site. After passing the airport, the trail crosses Four Mile Run and continues south between the river and the parkway. After reaching Old Town Alexandria the trail's route continues on Union Street. At the southern end of Union Street, the trail becomes an off-street path that travels southward and westward, crossing under the Woodrow Wilson Bridge and passing exhibits and restrooms near Jones Point near Alexandria's south side. After crossing over Hunting Creek and leaving Alexandria, the trail continues south through Fairfax County along the river, passing through the west sides of Belle Haven Park and Dyke Marsh and, after travelling inland, the east side of Fort Hunt Park. The trail then continues along the river until reaching in its last mile a curving inland uphill climb that ends at Mount Vernon. Connecting trails The Mount Vernon Trail connects to other area hiker/biker routes including: East Coast Greenway - a 3,000 mile long system of trails connecting Maine to Florida. Woodrow Wilson Bridge Trail, which crosses the Potomac River and provides access to National Harbor in Prince George's County, Maryland. Four Mile Run Trail, a paved trail that begins near the boundary between Arlington County and