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U.S. Route 11 (US 11) is a part of the U.S. Highway System that runs from New Orleans, Louisiana to Rouses Point, New York. In Maryland, the federal highway runs from the West Virginia state line at the Potomac River in Williamsport north to the Pennsylvania state line near Maugansville. US 11 is the primary north–south surface highway in central Washington County, connecting Hagerstown with Williamsport to the south and Hagerstown Regional Airport to the north. The federal highway was once a major long-distance highway, but that role has been assumed by Interstate 81 (I-81), which parallels US 11 not only in Maryland but for most of its course from Tennessee to Upstate New York. US 11 is maintained by the Maryland State Highway Administration except for the municipally-maintained portions within the corporate limits of Williamsport and Hagerstown. US 11 is the descendant of a trail blazed through the Great Appalachian Valley in the 18th century. In the 19th century, this trail was upgraded to a pair of turnpikes, one from Williamsport to Hagerstown and the second from Hagerstown to the Pennsylvania state line. The highway was constructed in its modern form in the early 20th century, with the bridge across the Potomac River constructed in 1909 and the old turnpikes paved as all-weather roads by the nascent Maryland State Roads Commission in the 1910s. These highways and the streets of Hagerstown and Williamsport were designated Maryland's portion of US 11 in 1926. The federal highway was improved outside of the towns in the years surrounding 1930 and again around 1950. Since the completion of I-81 in two sections in the late 1950s and mid-1960s removed long-distance traffic from the highway, US 11 has seen its two major relocations: one that removed the highway from downtown Hagerstown and another required by expansion at Hagerstown Regional Airport. ==Route description== US 11 begins at the West Virginia state line on the south bank of the Potomac River. The highway crosses the Potomac River on a two-lane bridge just south of its confluence with Conococheague Creek. The bridge passes over Potomac Park and the Chesapeake and Ohio Canal National Historical Park. At the east end of the bridge, US 11 enters the town of Williamsport, where the highway is municipally-maintained. The federal highway makes a turn to the north, then makes a sharp turn to the east onto Potomac Street adjacent to the Williamsport Visitor Center of the historical park. Within the Williamsport Historic District, US 11 intersects MD 68 (Conococheague Street) and MD 63. MD 63 joins MD 68 in a concurrency on Conococheague Street to the south and US 11 on Potomac Street east to Artizan Street, where MD 63 heads north out of town. US 11 veers northeast and heads through a more suburban area of Williamsport. The federal highway leaves the town of Williamsport and becomes state-maintained immediately before expanding to a four-lane divided highway for its partial cloverleaf interchange with I-81 (Maryland Veterans Memorial Highway).〔〔 US 11 continues northeast as Virginia Avenue, a two-lane highway through residential subdivisions. The federal highway passes close to the historic home Tammany and intersects Governor Lane Boulevard, which heads south through an industrial park. US 11 passes under I-70 with no access and enters the suburb of Halfway, where the highway crosses the Winchester and Western Railroad at-grade and at an angle. The federal highway intersects both Massey Boulevard and Halfway Boulevard, which head northwest toward the Valley Mall. US 11 continues into the city of Hagerstown, where the highway becomes municipally-maintained and enters an industrial area. The federal highway crosses Norfolk Southern Railway's Hagerstown District rail line immediately before its intersection with Wilson Boulevard, which heads east. Virginia Avenue, the old alignment of US 11, continues north toward downtown Hagerstown, passing through the South Prospect Street Historic District and passing by Hagerstown City Park, which contains the Hager House and the Washington County Museum of Fine Arts.〔〔 US 11 turns west onto Burhans Boulevard and immediately crosses over the Norfolk Southern rail line again. The federal highway curves to the north, paralleling the rail line, then crosses over the Winchester and Western rail line as its junction with the Norfork Southern line. US 11 continues north through a residential neighborhood before passing by the Hagerstown Roundhouse Museum and passing under CSX's Lurgan Subdivision just east of its wye with the Norfolk Southern line. At the intersection with Elgin Boulevard and Lanvale Street, US 11 turns east to remain on Burhans Boulevard and starts to parallel the CSX rail line. The federal highway and railroad curve to the north, where the highway intersects US 40 on the opposite side of the tracks from downtown Hagerstown. US 40 consists of a one-way pair, Washington Street eastbound and Franklin Street westbound. Between the two directions of US 40, US 11 passes the historic Western Maryland Railway Station, which is now the headquarters of the Hagerstown Police Department. North of US 40, US 11 intersects Salem Avenue, crosses Norfolk Southern Railway's Lurgan Branch, and curves north away from CSX's Hanover Subdivision, which turns to the east. Burhans Boulevard reaches its northern end at an oblique three-way intersection with Pennsylvania Avenue.〔〔 US 11 continues north on Pennsylvania Avenue, passing North Hagerstown High School. State maintenance of the federal highway resumes and the highway's name changes to Middleburg Pike at Haven Road just before the highway leaves the city of Hagerstown. US 11 continues north past residential subdivisions in the suburbs of Fountain Head and Orchard Hills. The federal highway passes a Volvo manufacturing plant and intersects Maugans Avenue, which heads west to Maugansville. North of the intersection with Showalter Road, US 11 adjoins the property of Hagerstown Regional Airport. The federal highway curves to the northeast and passes through a tunnel under the airport's east–west runway. The federal highway curves back to the northwest through an industrial area before resuming its northward course to the Pennsylvania state line. US 11 enters Pennsylvania just south of the federal highway's intersection with PA 163 (Mason Dixon Road).〔〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「U.S. Route 11 in Maryland」の詳細全文を読む スポンサード リンク
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