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Maryland Route 414 (MD 414) is a state highway in the U.S. state of Maryland. The highway runs from the beginning of state maintenance near Oxon Hill east to MD 5 in Silver Hill. MD 414 connects the inner suburbs of Oxon Hill, Marlow Heights, and Silver Hill and provides access to National Harbor. The highway was constructed through Oxon Hill and Marlow Heights in the early 1930s. MD 414 was extended through Silver Hill along the old alignment of MD 5 when that highway bypassed Silver Hill in the early 1950s. The highway was expanded to a divided highway between Marlow Heights and Silver Hill in the early 1970s, around its interchange with Interstate 95 and I-495 in the early 1980s, and around MD 210 in Oxon Hill in the late 1980s. MD 414 was reconstructed around MD 210 again in the mid-2000s with the construction of National Harbor and the new Woodrow Wilson Bridge. ==Route description== MD 414 begins at the county–state maintenance boundary on Oxon Hill Road just north of the entrance to Oxon Hill Manor. Oxon Hill Road continues south toward Fort Washington. MD 414 immediately expands from a two-lane road to a four-lane divided highway and intersects National Harbor Road, which leads west to the namesake development on the Potomac River. The east leg of the intersection is a ramp from I-295 (Anacostia Freeway) and northbound I-95 and I-495 (Capital Beltway). The state highway intersects another segment of National Harbor Road, expands to six lanes, and passes under a pair of long connectors between the three Interstate Highways and MD 210. MD 414 curves east and meets MD 210 (Indian Head Highway) at a four-ramp partial cloverleaf interchange. The north leg of the intersection with the southbound MD 210 ramps is Bald Eagle Road, which is unsigned MD 210V and leads to the Oxon Hill Farm. After passing under a ramp from northbound MD 210 to the northbound Beltway, MD 414 intersects ramps to and from the local lanes of the northbound Beltway.〔〔 MD 414 continues east as a four-lane road with a center turn lane into the heart of Oxon Hill, where the highway intersects Livingston Road. The highway becomes divided just west of John Hanson Lane, which is unsigned MD 975A and provides full access between MD 414 and both the county-maintained portion of St. Barnabas Road and Brinkley Road. The latter highway leads to historic St. Ignatius Church; Rosecroft Raceway, a harness racing facility; and the community of Temple Hills. Just east of John Hanson Lane, MD 414 continues east as St. Barnabas Road and meets the Capital Beltway at a cloverleaf interchange. The straight exit ramps from the Beltway in the interchange meet the highway at orthogonal four-way intersections that serve Brinkley Road and, on the north side of the Beltway, Alice Avenue. The state highway continues northeast as a four-lane highway with center turn lane and enters Marlow Heights.〔〔 East of Temple Hill Road in the center of Marlow Heights, MD 414 expands to a six-lane divided highway. The highway curves north and meets MD 5 (Branch Avenue) at a five-ramp partial cloverleaf interchange, where the highway reduces to four lanes. Just north of the interchange, MD 414 intersects Bedford Way, which is the western end of MD 967A, which includes a segment of Old Branch Avenue that parallels MD 5 to the southeast. The highway continues into Silver Hill, where the highway intersects MD 458 (Silver Hill Road). Just north of the intersection, MD 414 curves west as two-lane Old Silver Hill Road and passes the Paul E. Garber Preservation, Restoration, and Storage Facility, a support facility for the National Air and Space Museum. At its intersection with Bonita Street, the highway turns west onto that street and reaches its eastern terminus at a superstreet intersection with MD 5. There is no direct access from MD 414 to southbound MD 5.〔〔 MD 414 is a part of the National Highway System as a principal arterial from MD 210 in Oxon Hill to MD 458 in Silver Hill.〔〔 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「Maryland Route 414」の詳細全文を読む スポンサード リンク
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