About the Project
The Relief Line (formerly the Downtown Relief Line or DRL) was a proposed rapid transit line for the Toronto subway system, intended to provide capacity relief to the Yonge segment of Line 1 and Bloor-Yonge station and extend subway service coverage in the city’s east end. Several plans for an east-west downtown subway line date back to the early 20th century, most of which ran along Queen Street.
In April 2019, the Government of Ontario under Premier Doug Ford, announced that the Ontario Line, a provincially funded, automated rapid transit line running from Exhibition Place to Science Centre station, would be built instead of the Relief Line. Thus, in June 2019, TTC and City staff suspended further planning work on the Relief Line.
Project Highlights
Length: 7.4km
Number of stations: 8
Estimated cost: $8b to $9.2b
Expected completion: 2029
Train type: Heavy train
Passenger capacity per train: 1,100
Train frequency: 140 seconds
Daily boardings: 206,000
PM ERA’s Assignment
Client: Toronto Transit Commission
Assignment:
PM ERA was responsible for constructability review and prepared schedules based on the different tunnelling options (twin-bore, single-bore bore and mega-bore)
Added Value
PM ERA brought its professional knowledge and experience from previous similar projects, such as TYSSE (Toronto-York-Spadina Subway Extension) and ECLRT (Eglinton Crosstown LRT)
Service Tag
Linear Scheduling
Scheduling
Project Controls
Industry Tag
Infrastructure
Tunnelling
Subway
Rail
Transportation
