Line 1 Yonge–University has part(s) York Mills
Route description
The line forms a rough 'U' shape, with two portions running generally north–south that meet at Union in the southern part of the city's downtown, and then gradually spreading farther apart as they proceed northward. From Union station, the eastern portion of the line runs straight under or nearby Yonge Street, sometimes in an uncovered trench, for 16 kilometres (9.9 mi) to its northeastern terminus at Finch Avenue, connecting with Line 2 Bloor–Danforth at Bloor–Yonge and Line 4 Sheppard at Sheppard–Yonge. This eastern portion, often just called the "Yonge Line", serves Downtown Toronto, Midtown Toronto and York Mills before ending at Finch Avenue, the northern edge of North York Centre.
The western portion snakes northwesterly from Union, initially running straight under University Avenue and Queen's Park Crescent to Bloor Street, where it turns westerly to run under Bloor Street for about 700 metres (0.43 mi). Along this stretch, it interchanges with Line 2 at St. George and Spadina stations. At Spadina Avenue, it turns north to run for roughly 1 kilometre (0.6 mi) under Spadina Road before curving northwesterly to continue along the Nordheimer and Cedarvale ravines to the foot of Allen Road at Eglinton Avenue. It reaches the surface and continues northward in the road's median for 6 kilometres (3.7 mi) past Wilson Station, after which it moves underground again and runs northwesterly on an off-street alignment below suburban industrial areas and the York University campus until Steeles Avenue. From there, it turns to parallel Jane Street for roughly 1.5 kilometres (0.9 mi) until its northwestern terminus in the neighbouring city of Vaughan's planned downtown core, the Vaughan Metropolitan Centre, at the intersection of Jane Street and Highway 7. This western portion serves the Annex and Forest Hill neighbourhoods in Old Toronto; Humewood–Cedarvale in the former York; Glen Park, Downsview, the York University Heights–Northwood Park areas in the former North York; and the Vaughan Metropolitan Centre in Vaughan.
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