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The Sprain Brook Parkway (also known as The Sprain) is a long north–south parkway in Westchester County, New York, United States. It begins at an interchange with the Bronx River Parkway in the city of Yonkers, and ends at the former site of the Hawthorne Circle, where it merges into the Taconic State Parkway. The parkway serves an alternate to the Bronx River Parkway, boasting an interchange connection through western Westchester with Interstate 287. New York's Department of Transportation (NYSDOT) refers to it internally as New York State Route 987F (NY 987F), an unsigned reference route. The Sprain Brook was first proposed in the early 1920s as a parkway between the Bronx River Parkway and the Hawthorne Circle. The parkway sold a majority of its right-of-way in the 1920s, but the proposed parkway met strong opposition from the village of Bronxville and Yonkers. The Sprain Brook proposal sat on the table until 1949, when the State Council of Parks, run by Robert Moses, sought to ease congestion on the Bronx River Parkway. Moses proposed that a new state park would be constructed in Westchester, with the Sprain Brook Parkway serving as a traffic alternative to the Bronx River, and nearly a decade and a half after the parkway was deeded land. This time, Bronxville opposed the project rather than Yonkers, but an agreement was worked out in 1951. This new alignment would bypass the parts of Bronxville and Yonkers to construct the freeway. Construction of the alternative highway began in 1958, with the stretch from the Bronx River Parkway to Tuckahoe Road in Greenburgh This section was completed in 1961. The next piece, from Tuckahoe Road to Jackson Avenue, was constructed during 1962 and 1963, with it opening in the latter. Construction continued to the Cross Westchester Expressway (I-287) and was completed in 1969. At this point, the last missing piece was between the Cross Westchester and the Hawthorne Circle. This piece was delayed until 1976, when construction began on the last of parkway. The last piece of the parkway was opened on October 28, 1980 at the cost of $25 million (1980 USD). From its opening in 1961 until 1979, the parkway was maintained by the East Hudson Parkway Authority, a commission created to maintain tolls on the Saw Mill River Parkway, the Bronx River Parkway and to provide general maintenance for the Taconic State Parkway. The authority was abolished in 1979, at which time, all maintenance of the Sprain Brook Parkway was turned over to NYSDOT. ==Route description== The Sprain Brook Parkway, designated by the New York State Department of Transportation as NY 987F, a state reference route,〔 begins at a fork from the Bronx River Parkway along the latter's right-of-way along the Bronx River in the city of Yonkers. Crossing through the Northeast Yonkers neighborhood as a six-lane freeway design, the Sprain Brook crosses an interchange with NY 100 (Central Park Avenue) south of Andrus Park. Bending to the north through Yonkers, the Sprain Brook reaches an interchange with Tuckahoe Road, with the northbound and southbound lanes splitting around the Grassy Sprain Reservoir. The two directions bend northeast along the reservoir. The southbound lanes cross Sprain Ridge Park, while the northbound lanes cross through a golf course. Leaving Yonkers for the town of Greenburgh, the lanes of the Sprain Brook come back together, reaching an interchange with Jackson Avenue. The six lane parkway continues northward and to the northeast through Greenburgh, crossing under Ardsley Road. After turning northward once again, the Sprain Brook crosses under a former alignment of NY 131 (Underhill Road) and passes by the Sunningdale Country Club. Continuing its north/northeast winding, the Sprain Brook enters an interchange with NY 100B (Dobbs Ferry Road), passing by East Rumbrook Park. Crossing over NY 119 in Elmsford, the parkway enters an interchange with Interstate 287 (the Cross Westchester Expressway). After crossing through the interchange, the Spain continues northward as a six-lane parkway back through the town of Greenburgh, entering an interchange with NY 100C (Grasslands Road). Paralleling NY 100 to the west, the parkway, bending northward into Mount Pleasant and an interchange with County Route 301 (Bradhurst Entrance North Road), which connects to NY 100 (Bradhurst Avenue). North of that junction, the southbound lanes of the Sprain Brook interchange with a crossing NY 100. After several bends to the north, the Sprain Brook enters the merging Taconic State Parkway and terminates as the right-of-way continues as the Taconic.〔 The Sprain Brook Parkway sees an average of 95,442 vehicles per day throughout its entire length. The stretch between I-287 and NY 100C sees the highest amount, with 101,460 cars in a 2011 report. The stretch between NY 100 in Yonkers and Jackson Avenue in Greenburgh sees the second-highest, at 100,900, which is an upgrade of over 19,000 vehicles since the same report in 1997.〔 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「Sprain Brook Parkway」の詳細全文を読む スポンサード リンク
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