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Green Gardiner Consolidated Infrastructure Proposal

The Green Gardiner Consolidated Infrastructure proposal has been prepared as a volunteer city-building initiative by SvN, consulting firm Brook McIlroy Inc. and engineering firm Entuitive. The proposal is available for download here. For more information, please email welcome@greengardiner.ca or call 416.504.5997 ext.280.

The proposal addresses the segment from Jarvis Street to Cherry Street and is illustrated as an extension of the City’s updated Option 3 for the portion east of Cherry Street linking the Gardiner to the Don Valley Parkway.

10 KEY GREEN GARDINER FACTS:

  1. The 4-lane segment of the Gardiner between Jarvis and Cherry Streets (1.1 kilometre) is proposed to be built above the railway berm owned by Metrolinx.
  2. For a majority of its length, this 27-metre wide southern portion of the railway right-of-way does not presently accommodate railway tracks. In the future, as Metrolinx expands capacity in the USRC East corridor, additional tracks will be built in this segment.
  3. Disruption is minimized. Construction of this replacement segment of the Gardiner would be undertaken north of the current Gardiner corridor allowing the existing structure to remain in place, and operational, during construction. The old expressway will be removed once the new segment is operational.
  4. By shifting the Gardiner north over the railway – 3 hectares (8.15 acres) of City of Toronto land is released for new urban development framing the north side of Lake Shore Blvd. The depth of land allows for normal development footprints and below grade parking for the majority of the segment.
  5. Lake Shore Blvd. will become a Grand Urban Boulevard framed by buildings on both sides within a 33-metre right-of-way accommodating six vehicular lanes, separated bike lanes and wide tree-lined sidewalks. No additional private property is required for the right-of-way.
  6. construction cost of $316 million [1] is estimated to build the Gardiner in this ­­­­1.1-kilometre segment (with a 100-year maintenance estimate of $500 million).
  7. A construction cost of $50 million [2] is estimated to build the 1.1 kilometre segment of Lake Shore Boulevard.
  8. The development potential of the City’s land is estimated at 400,000 [3] sm (4.3 million sq ft) of building area on the north side of Lake Shore Blvd. with a land value of $300 million generating an annual tax contribution of $16.0 million [4].
  9. New development built on the north side of Lake Shore will also provide a green deck above the Gardiner, creating a linear park over the expressway/rail corridor.
  10. Eventually the green deck can be extended to the north edge of the railway property creating a 3 hectare linear Greenway Park with new mid-block pedestrian and cycling connections linking the St. Lawrence Neighbourhood to the waterfront.

[1] Does not include costs for removal of the existing Gardiner structure in this segment.
[2] Including below-grade utilities allowance of $25 million
[3] 400,000 sm based on an 12 X FSI with a combination of mid-rise buildings (averaging 10 storeys) and point towers (averaging 40 storeys).
[4] 4,545 units with an average assessment of $500,000 per unit. Generates annual taxes of $3,528.00 per unit. 4,545 units x $3,528.00 = $16.0 million per annum. Over a 100-year period = $1.6 billion

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