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King's Highway 404 (pronounced "four-oh-four"), also known as Highway 404 and colloquially as the 404, is a 400-series highway in the Canadian province of Ontario connecting Highway 401 and the Don Valley Parkway (DVP) in Toronto with East Gwillimbury. The controlled-access highway also connects with Highway 407 in Markham. Highway 404 provides access to the eastern edge of Richmond Hill, Aurora and Newmarket, in addition to the southern edge of Keswick. Construction on the freeway began soon after the completion of the Don Valley Parkway, with the first section south of Steeles Avenue opening in 1977. Over the next twelve years, the Ministry of Transportation of Ontario (MTO) undertook a continuous construction program to build the freeway to Davis Drive in Newmarket. This was completed on October 24, 1989. The route has undergone a periodic series of smaller extensions and widening in the years since, now travelling a further north to Woodbine Avenue near Ravenshoe Road in the town of East Gwillimbury. Future proposals may one day result in an extension to southeast of Beaverton. Highway 404 is one of several freeways in the Greater Toronto Area (GTA) with High-Occupancy Vehicle (HOV) lanes; the southbound lane was one of the initial projects in the province and opened on December 13, 2005. The northbound lane opened on July 23, 2007. == Route description == Running parallel to Highway 400 approximately to the east, Highway 404 extends on a north–south orientation between Highway 401 and Ravenshoe Road. There are 16 interchanges along its length, mostly of the Partial cloverleaf A4 configuration. Exit numbers on the freeway start at 17, suggesting that the length of the Don Valley Parkway was considered in distance calculations; there are no exit numbers posted on the DVP.〔 Officially, the Ministry of Transportation of Ontario (MTO) jurisdiction over the freeway begins as the opposing directions of travel diverge south of the Highway 401 interchange.〔This demarcation line is visible on the highway as a change in pavement quality and the use of different high-mast lighting〕 Northbound, two lanes from the DVP are joined by a third from the eastbound collectors of Highway 401. These narrow to two lanes before merging with a single lane from westbound Highway 401 immediately south of Sheppard Avenue. An additional two lanes from westbound Highway 401 converge and form a separate carriageway with no access to Sheppard. Southbound, the freeway is divided into two carriageways, both of which provide access to the DVP. The outer carriageway also provides access from Sheppard and to Highway 401, including the westbound express lanes, while the inner carriageway is intended for DVP-bound traffic. The HOV lane also provides access to westbound Highway 401 via a dedicated tunnel, which passes beneath the other southbound lanes. To the east of Highway 404 is the Consumers Road office park. To the west and north of Sheppard Avenue is Fairview Mall, which has its own connection with the southbound lanes attached to the Sheppard interchange.〔 The highway continues directly north along the old Woodbine Avenue right-of-way to just south of Steeles Avenue, where it diverges to the west before continuing north. From just north of Sheppard, a northbound HOV lane is present alongside the central median. Southbound, the HOV lane continues as far as Highway 401. Alongside Highway 404 to the east is an industrial warehouse and commercial office area, while on the west is a suburban subdivision of North York. Northbound, the freeway is six lanes wide from Sheppard Avenue to Finch Avenue, where one lane diverges onto an off-ramp, re-emerging north of Finch. Southbound, it is six lanes wide from Steeles south to Sheppard.〔 At Steeles Avenue, the freeway enters the Regional Municipality of York. To the east are industrial units, while on the west are residential suburbs. This land-use persists north to the Highway 407 ETR interchange, a multi-level stack interchange with two flyovers. North of Highway 407, the freeway crosses Highway 7, where the HOV lanes transition to standard through lanes. The freeway passes west of Buttonville Municipal Airport and then interchanges with 16th Avenue. It narrows and the central barrier ends; a grass median taking its place between the opposing lanes. The land-use density continues to drop, with the appearance of some open spaces and farms interspersed with industrial and commercial buildings. By 19th Avenue, just north of the Honda Canada headquarters in Markham, the land-use is agricultural on both sides of Highway 404. Highway 404 continues north, forming the eastern boundary of the municipalities of Richmond Hill, Aurora and Newmarket. North of Wellington Street, the highway reduces in width to four lanes, which is its configuration north through East Gwillimbury.〔 The route continues, passing east of the community of Sharon, eventually curving northeast and terminating at an at-grade intersection with Woodbine Avenue immediately south of Ravenshoe Road (York Regional Road 32).〔 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「Ontario Highway 404」の詳細全文を読む スポンサード リンク
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