Eglinton Crosstown West Extension

Alignment

The extension continues Line 5 Eglinton 9.2 km west from Mount Dennis station, its current western terminus at Weston Road, to Renforth Drive. From Mount Dennis, trains run through a short tunnel and come to the surface along the north side of Eglinton Avenue West east of Jane Street. They then climb onto a 1.5 km elevated guideway, built in 35 spans, that crosses the Humber River and its floodplain. That section has two elevated stations, Jane and Scarlett.

West of Scarlett Road the line enters a 6.3 km twin-bore tunnel under Eglinton Avenue, with underground stations at Royal York, Islington, Kipling and Martin Grove. It ends at Renforth, an open-trench station beside the eastern end of the Mississauga Transitway, near the Toronto–Mississauga boundary. The extension will connect with the UP Express, GO Transit, TTC and MiWay. Together with the main Crosstown line it will form a continuous rapid transit route from Scarborough to Mississauga. Wikipedia lists a forecast of 96,700 daily riders.

Metrolinx and the Greater Toronto Airports Authority are studying a further extension of up to 4.7 km, with as many as three more stations, from Renforth north to Pearson International Airport. That link is not funded or scheduled. The first section of Line 5 Eglinton, from Mount Dennis to Kennedy, opened in early 2026.

Updates

2026-08 — Tunnelling complete

Ontario and the federal government marked the end of tunnelling on August 11. The final piece was a pair of parallel tunnels, each about 500 m long, between Mount Dennis station and Jane Street. Strabag dug them with sequential excavation rather than tunnel boring machines. The federal government is contributing about C$1.87B to the extension. Metrolinx’s timeline shows station excavation starting in July 2026.

2026-05 — First span of the Humber River guideway in place

Metrolinx finished the first of 35 bridge spans on the 1.5 km elevated guideway over the Humber River valley. blogTO reported that the extension is scheduled for completion in 2031, although Metrolinx has not published a firm opening date.

2025-08 — Partner chosen for stations, rail and systems

Infrastructure Ontario and Metrolinx signed a development and master construction agreement with Trillium Rail Partners (Amico, Alberici and Acciona, with designer WSP). The progressive design-build contract covers the seven stations, track and systems, and changes at Mount Dennis station. During its development phase the team can start early works while design, risk and pricing are settled.

2025-02 — Eastern tunnels started

Strabag, which won the Jane-to-Mount Dennis tunnel contract in February 2024, began construction. Aecon had won the contract for the elevated Humber River guideway in December 2023.

2024-06 — Western tunnels complete

The tunnel boring machines Renny and Rexy finished the twin 6.3 km tunnels between Renforth and Scarlett Road, about three weeks apart. The contractor was West End Connectors (Dragados, Aecon and Ghella), and boring had started in April 2022.

2021-05 — First tunnel contract and federal funding

Metrolinx awarded the Renforth–Scarlett tunnel contract to West End Connectors on May 20, 2021, and broke ground at the Renforth launch shaft that July. Ottawa committed to fund 40% of four GTA rapid transit projects, listing the West Extension at an estimated C$4.7B. That figure came from the 2020 business case for a grade-separated line, after earlier plans for a cheaper surface LRT along Eglinton were dropped.