Ontario Highway 404

Ontario Highway 404 is a 400-series highway. It starts at Highway 401 in Toronto and ends at Woodbine Avenue in East Gwillimbury.

290px Highway 404 within Ontario, Canada
Route information
Maintained by the Ministry of Transportation of Ontario
Length	50.1 km (31.1 mi)
Major junctions
South end	File:Ontario 401.svg Highway 401 in Toronto
Major intersections	24x22px Highway 407 in Markham
North end	Woodbine Ave. (York road 8)
Highway system
Ontario provincial highways Current Former 400-series
← →

Ontario Highway 404 Media

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  Aerial photograph of the Don Valley Parkway / Highway 404 / Highway 401 interchange

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  Highway 404 looking north just north of the Highway 401 / Don Valley Parkway interchange, showing the interchange with Sheppard Avenue, with Fairview Mall and Consumers Road office park on the west and east sides of the freeway, respectively.

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  Originally built as part of the Don Valley Parkway, the segment south of Sheppard Avenue became part of Highway 404 in 1977.

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  Looking north from Sheppard Avenue at Highway 404's divided cross-section; from left-to-right is the southbound collector lanes, southbound express lanes including HOV lane, on-ramp (from Highway 401), and northbound lanes

• Highway 404 southbound, near the interchange with Steeles Avenue c. 2006. The southbound HOV lane was completed, while construction was still underway on the northbound HOV lane.

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  Looking south at the interchange with 16th Avenue, with Buttonville Municipal Airport in southeast quadrant. The freeway configuration is after its 2002 widening, with a narrowed grass median that would be paved over during the route's 2023 expansion.