Line 3 Scarborough

Line 3 Scarborough. It was a medium-capacity rapid transit line in Toronto, operated by the Toronto Transit Commission as part of the Toronto subway system. The line served the Scarborough district, connecting to the rest of the network at Kennedy station. After nearly four decades of service, it was permanently closed in 2023 due to reliability concerns and to facilitate its replacement.

History

The line originated from plans developed in the 1970s, part of a broader network expansion that included the Scarborough RT. It was constructed using the proprietary Intermediate Capacity Transit System technology from the UTDC. Service officially commenced in 1985, following its opening by Ontario Premier William Davis. Throughout its operational life, it faced criticism for its unique technology, which led to compatibility issues with the rest of the Toronto subway and frequent service disruptions. Major overhauls were conducted in the 1990s and 2010s by Bombardier Transportation and later Siemens Mobility, but growing maintenance challenges and the need for a full fleet replacement ultimately led to the decision for closure. The final day of revenue service was in 2023, after which the Government of Ontario and Metrolinx began advancing plans for its successor.

Route and stations

The route was 6.4 kilometers long, primarily elevated and running along the median of the Ellesmere Road and McCowan Road corridors. It began at the intermodal Kennedy station, a major hub with connections to Line 2 Bloor–Danforth and GO Transit's Stouffville line. From there, it proceeded northeast, serving Lawrence East station near the Scarborough Town Centre, then Ellesmere station, Midland station, and Scarborough Centre station adjacent to the Scarborough Civic Centre. The line terminated at McCowan station, located near the Toronto Transit Commission's McCowan Yard. All stations featured distinctive architecture and were designed with accessibility upgrades implemented in later years.

Rolling stock

The line operated exclusively with a fleet of ICTS Mark I trains, originally manufactured by the UTDC. These were linear induction motor-powered, automated rapid transit vehicles that operated in fixed, married pairs. The fleet was significantly refurbished in a project led by Bombardier Transportation in the late 1990s. A further life-extension program was undertaken by Siemens Mobility, which had acquired the technology, to maintain service into the 2020s. The unique technology meant the trains were incompatible with the Toronto Rocket or streetcar fleets, necessitating a dedicated maintenance facility at McCowan Yard.

Operations

Operations were fully controlled from the Toronto Transit Commission's Transit Control Centre. The line typically operated with a headway of four to five minutes during peak periods, utilizing its automated train control system. It interfaced directly with Line 2 Bloor–Danforth at Kennedy station, requiring a cross-platform transfer for most passengers. Service was frequently adjusted or suspended due to the aging fleet's reliability issues, especially during winter months, which impacted connectivity across Scarborough. The line's closure necessitated the implementation of extended bus shuttle services, operated by the Toronto Transit Commission, to bridge the gap until a permanent replacement is completed.

Future plans

The line is being replaced by the Scarborough Subway Extension, a heavy-rail project led by Metrolinx and the Government of Ontario. This extension will continue Line 2 Bloor–Danforth from Kennedy station northeast to Scarborough Centre station, with a proposed terminus at Sheppard Avenue. Major construction contracts have been awarded to Acciona and Aecon, with utility relocation and tunneling work underway. The project is part of the broader Ontario Line transit expansion plan. Upon completion, the new extension will provide a fully integrated service with the existing Toronto subway, and the former alignment is slated for decommissioning and potential redevelopment.

Category:Rapid transit in Toronto Category:Defunct rapid transit lines Category:Transport in Scarborough, Toronto