Preliminary Construction and Traffic Management Planning (text summary)

 

Crosstown Construction Update

Tunnel preparation work has begun at Black Creek and Eglinton Avenue in Keelesdale Park with the development of the west launch shaft. Concrete support walls for the future west tunnel launch shaft are being built. Tunnelling for The Crosstown will begin in late 2012, heading east towards Allen Road.

Tunnel Construction

In order to minimize disruptions, a number of principles have been put in place for tunnel construction. Specifically, we will:

  • Package contracts to coordinate all work under same umbrella (utilities, city, transit);
  • Maintain a minimum of one-lane open for traffic headed in both directions on Eglinton in construction zones;
  • Ensure that access to all buildings from Eglinton will remain open throughout construction; and,
  • Only propose road closures if required for safety reasons or to significantly save time and reduce long-term disruption.
CN Tower
Did you know? There will be enough soil removed during the tunnelling of The Crosstown to fill the Air Canada Centre higher than the CN Tower (1,165,000 cubic metres).

An overview of tunnel construction:

Tunnel construction is both a fascinating and complex process that involves careful planning.

  • Utilities will be relocated at major intersections to maintain services (gas, water and cable);
  • Construction of “headwalls” (support walls formed by a series of concrete columns) will occur at the east and west ends of each future station location and will stay put for four to five months;
  • A process called “Jet Grouting” will occur and takes approximately three to four months to develop support beams for future stations;
  • Concurrently, construction of the tunnel launch and extraction shafts is taking place. These are large pits where tunnelling machines are first lowered for assembly and then extracted from the ground;
  • The tunnel machines will be launched from Keelesdale Park (just west of Keele Street) and tunnel eastward through the station “headwalls”;
  • To ensure subway service is maintained throughout construction, tunnelling machines will be removed from a pit at the west side of Allen Road on Eglinton and re-launched from a new pit on the east side of Allen Road on Eglinton. Tunnelling will proceed to Yonge Street, and a second extraction pit will be built to remove and re-furbish the machines before they reach Eglinton Station; and,
  • Following this tunnelling work, The Crosstown stations between Keele and Yonge will be constructed. Each station will take approximately four years to construct.

Keele Street to Yonge Street Traffic Management Overview

During tunnel construction along Eglinton, one lane of traffic will be open eastbound and westbound will remain open. Both buses and general traffic will share this lane. Advance warning signs will be placed in the vicinity of the corridor prior to construction.

Transit Services

During tunnel construction, pedestrian and bus access to Eglinton West and Eglinton Stations will remain open. There will be no major changes to existing bus routes; however, local bus route detours may be required. The TTC will monitor buses along Eglinton during construction and will add additional buses as required for changing traffic conditions.

Parking Along Eglinton

Currently, there is three hour paid parking available on Eglinton Avenue West outside of weekday rush hours. In order to provide space for construction work, some of these spaces will be unavailable throughout construction. One-hour parking on some local roads will be extended to three hours, only while construction is impacting parking availability on Eglinton Avenue. Parking on local roads will be enforced to discourage long-term parking and will be closely monitored by Toronto Police Services Parking Enforcement.

Pedestrians and Cyclists

During construction, access to buildings on Eglinton Avenue will have minimal disruption. There will be access to the front doors at all times; however, there may be some temporary sidewalk closures required. Where necessary, pedestrian crossings will be available at traffic signals.

Currently, there are no bike lanes provided on Eglinton Avenue. During construction, cyclists will continue to share general traffic lanes. Where space is available, wider lanes will be provided to accommodate all users.

Allen Road Area Construction

Tunnelling under Eglinton West Station carries risk to subway operations. A detailed Traffic management plan will be developed and presented in fall 2012. In 2013, there will be the potential for occasional, off-peak (overnight) southbound right turn prohibitions from Allen Road to Eglinton Avenue for utility relocations. There also may be a potential eastbound to northbound left turn prohibition from Eglinton Avenue onto Allen Road for decking installation.

Allen Road Proposed One Year Closure in 2014 to Northbound Access at Eglinton

To expedite tunnelling during construction, northbound access to Allen Road may be closed. The closure is projected to reduce construction by approximately one year. Access to the northbound Allen would remain open north of Eglinton. All prohibitions at Allen Road require City Council approval. The anticipated report timing is fall 2012 Public Works Committee/City Council.

Station Construction Overview Projected Start – 2015

After tunneling is completed, station construction will begin. Find out more about station construction.

Eglinton Pre-Construction - Existing right of way use Stage 1A Piling - Divert traffic and construct support of excavation
Eglinton Pre-Construction - Existing right of way use Stage 1A Piling - Divert traffic and construct support of excavation
Stage 1B – Construct centre piles Stage 2A – Construct roadway decking on one side
Stage 1B – Construct centre piles Stage 2A – Construct roadway decking on one side
Stage 2B – Construct opposite side decking and support of excavation Stage 3 – Construct station box under the roadway decking
Stage 2B – Construct opposite side decking and support of excavation Stage 3 – Construct station box under the roadway decking
Station Complete – Restore roadway, utilities and traffic  
Station Complete – Restore roadway, utilities and traffic