Strachan Avenue Overpass

• Phase 1 construction begins: winter 2011
• Phase 2 construction begins: summer 2011
• Siphon Tunnel complete: summer 2012
• Caisson drilling for retaining walls
• Middle wall (not including bridge section) complete: mid to late May 2012
• North wall (not including bridge section) complete: early June 2012
• Middle and north walls (bridge section) begins: fall 2012
• South wall begins: spring 2013
• Temporary realignment of Strachan Avenue
• Construction begins: spring 2012
• Construction complete: late 2012
• In effect from late 2012 to early 2014
• Phase 2 construction complete: fall 2014

Phase 1 of the work will include:

• construction of a retaining wall in the north-east quadrant, which will also support the City of Toronto’s Fort York Pedestrian Bridge
• utility work, including the construction of a new utility tunnel

Phase 2 of the work will include:

• Construction of the Storm Water Siphon Tunnel
• Currently, a 3-metre diameter storm sewer runs directly underneath Strachan Avenue and needs to be located below the future lowered rail corridor
• Work on the vertical shafts for the new sewer (siphon tunnel) will start at the southeast corner of Strachan Avenue and Fleet Street and the southwest corner of Strachan Avenue and Douro Street
• Construction of the Retaining Walls
• Three retaining walls will be required to support the lowered rail corridor: a north, centre and south wall
• Construction will begin on the north and centre walls by augering (drilling) concrete piles
• Temporary realignment of Strachan Avenue
• Strachan Avenue will be diverted to the west to facilitate construction of the lowered rail corridor
• Excavation of the rail corridor begins
• The corridor will be excavated in two phases to maintain railway operations
• The north section of the corridor will be excavated first with all rail service shifted to the south tracks

How this will affect you

• The majority of the work will take place during regular construction hours
• Some construction work may be required outside these hours
• Advance notice will be provided to the surrounding community when are working outside the regular hours
• Temporary realignment of Strachan Avenue in 2012
• Short-term road closure at Strachan Avenue may be needed in 2012 and/or 2013

Noise and vibration monitors have been set up along the Strachan Avenue Overpass project area to monitor any noise and vibration generated by the construction. This data will be posted on a weekly basis.

The following graph displays 1-hour averaged noise levels measured in decibels (dbA).

For a map of the station locations, please click here.

Archived graphs

2011 | January 2-March 31 | April 2-7 | April 9-14 | April 16-21

Vibration

No elevated vibration levels were recorded during this construction period.

To learn more about how we're monitoring noise and vibration during construction, please see our Noise and Vibration page.

Design consultant: AECOM
Construction contractor: Phase 1: Kenaidan Contractors
Construction contractor: Phase 2: EllisDon

• GTS Walking Tours
• Strachan Avenue Overpass Construction Liaison Meeting
• May 16, 2012 – Strachan Avenue Construction Update
• May 15, 2012 – Strachan Avenue Construction Update
• May 15, 2012 – Strachan Avenue Construction Update
• April 5, 2012 – Strachan Avenue Construction Update – Realignment Construction
• February 22, 2012 – Strachan Avenue Construction Update
• February 17, 2012 – Strachan Avenue Construction Update
• January 19, 2012 – Strachan Avenue Construction Update
• January 6, 2012 – Strachan Avenue Construction Update
• October 26, 2011 – Strachan Avenue Overpass Walking Tour
• September 2011 – Strachan Avenue Overpass Construction Update
• May 17, 2011 – Strachan Avenue Overpass Update Meeting
• March 31, 2011 – Strachan Avenue Overpass Construction Hours
• March 18, 2011 – Strachan Avenue Overpass Strut Design Results
• March 16, 2011 – Strachan Avenue Overpass Construction Update
• February 23, 2011 – Trinity—Spadina Information Session
• February 9, 2011 – Strachan Avenue Overpass Strut Feedback
• February 3, 2011 – Strachan Avenue Overpass Construction Update
• January 11, 2011 – Strachan Avenue Overpass Construction Update
• October 26, 2010 – Strachan Avenue Overpass Design Update
• October 26, 2010 – Strachan Avenue Overpass Update