Midtown corridor

Midtown
30px
300px The former Canadian Pacific North Toronto railway station along the proposed Midtown corridor in Toronto
Overview
Type	Commuter rail
System	GO Train
Locale	Toronto Durham Region
Operation
Owner	Canadian Pacific Railway
Technical
Track gauge	1,435 mm (4 ft 8 1⁄2 in) standard gauge
Route map Legend Milton line Kitchener line Barrie line File:BSicon ulv-HST.svg Dupont File:BSicon ulvHST-.svg Summerhill North Toronto Yellow Creek Mud Creek Don Branch to Union Station Leaside West Don River File:BSicon uexlHSTc3.svg File:BSicon uexlCONT1f.svg x20px Sunnybrook Park x20px File:BSicon uexlCONT4f.svg x20px x20px Science Centre x20px Don Mills LRT x20px Don Valley Parkway Richmond Hill line East Don River Massey Creek Highway 401 File:BSicon lhMASK.svg x20px West Highland Creek File:BSicon uexlCONT1f.svg x20px Agincourt x20px Seaton line | Havelock line x20px CPR Toronto Yard File:BSicon uexlCONT1f.svg x20px File:BSicon uexv-STR+1.svg Rouge River File:BSicon vBRIDGEq-.svg x20px Canadian National Railway x20px File:BSicon uexv-STR+1.svg Highway 407 x20px File:BSicon BRIDGE-.svg Little Rouge Creek x20px Locust Hill File:BSicon exvBRÜCKE-.svg File:BSicon uexv-BRÜCKE.svg West Duffins Creek x20px Seaton x20px

The Midtown corridor refers to three new GO Transit services in Metrolinx's regional transportation plan for the Greater Toronto and Hamilton Area, The Big Move. The first is a Crosstown line from Dundas Street to the former Canadian Pacific North Toronto and Leaside stations in Toronto. The second and third segments would extend east from North Toronto and/or Union Station: the Seaton line to Seaton, and the Locust Hill line to Locust Hill.

GO Transit has contemplated a Midtown corridor since the 1980s as a contingency plan once capacity at Union Station became constrained, making North Toronto an alternate station for Downtown Toronto. The major barrier to these plans, however, is the fact that the Midtown corridor is composed of existing rail lines owned and actively used by Canadian Pacific Railway (CP) as its main freight line between Ottawa, Montreal, London and Windsor. CP has been reluctant to provide capacity to GO Transit on its tracks, and the Milton line (which runs along CP tracks to the west) only came after considerable negotiations, and an investment of hundreds of millions of dollars.

All three lines in the corridor were listed under the 15-year plan of The Big Move upon its publication in 2008. However the Havelock line was moved to the 25-year plan on February 14, 2013, because of "very modest ridership potential and significant infrastructure and operational challenges related to the Agincourt rail yards."