Date:August 5, 1998
To:Urban Environment and Development Committee
From:Commissioner, Works and Emergency Services Department
Subject: Contract No. T-47-98
F. G. Gardiner Expressway - Saulter Street to Leslie Street
Substructure Repairs
Don River; Councillors Jack Layton, Pam McConnell
Purpose:
To increase the contract price for Contract No. T-47-98, F.G. Gardiner Expressway - Saulter
Street to Leslie Street, Substructure Repairs so that additional emergency work can be
carried out.
Funding Sources:
Funding for this project has previously been approved by Council and is available in Capital
Account No. C-TR026, F.G. Gardiner Repairs - Parkway to Leslie Street. The Treasurer has
previously certified that financing can be provided under the updated Debt and Financial
Obligation Limit and that it falls within corporate debt guidelines. There are sufficient funds
available in Capital Account No. C-TR026 to accommodate the extension of this Contract.
Recommendation:
It is recommended that the contract price for Contract No. T-47-98, F.G. Gardiner
Expressway - Saulter Street to Leslie Street, Substructure Repairs be increased by
$250,000.00 net to a total of $1,036,920.80 to accommodate the additional emergency work.
Background:
At its meeting on May 20, 1998, the Bid Committee awarded Contract No. T-47-98, F.G.
Gardiner Expressway - Saulter Street to Leslie Street, Substructure Repairs to Grascan
Construction Ltd. and Torbridge Construction Ltd. at a contract price of $786,920.80 (GST
included).
Discussion:
The former Metropolitan Toronto Council had authorised the dismantling of the section of
the F. G. Gardiner Expressway between Don Valley Parkway and Leslie Street. A report
recommending the award of a contract for the railway relocation (Contract No. T-54-98)
along Lake Shore Boulevard from the Don Valley Parkway to Leslie Street was presented to
the Urban Environment and Development Committee on July 13, 1998. At the meeting, the
Urban Environment and Development Committee deferred the consideration of the award of
the contract until its meeting scheduled to be held on October 5, 1998. The physical
demolition of this section of the Expressway, if Council directs, will take place some time in
the future (likely in year 2000) following the completion of all required preliminary works.
This section of the Expressway has not been rehabilitated since it was built in 1964. The
deterioration of this portion of the Expressway has accelerated to such a critical level that
emergency repairs to the substructure must be undertaken in order to keep the Expressway
in service until dismantling.
At the design stage, staff performed detailed visual inspections on the substructure in
accordance with the Structure Rehabilitation Manual issued by the Ontario Ministry of
Transportation. The required emergency repairs to the south cantilevers and bearing seats
were identified.
During the actual repair work, a more thorough limited delamination survey was conducted
to assess the general conditions of the bent cap beams. It was found that there were
numerous large areas of delamination on both the vertical faces and soffit of the cap beams.
These areas are directly over the westbound lanes of Lake Shore Boulevard. The
delaminations will eventually spall as a result of continued corrosion of the reinforcing steel
as well as vibrations from traffic on the Expressway above. Consequently, this will pose a
potential threat to motorists currently using the Lake Shore Boulevard Westbound.
It is therefore recommended that, as a safety measure, this delaminated concrete be removed
as soon as possible.
Conclusion:
The contract price for Contract No. T-47-98 should be increased by $250,000.00 to a total of
$1,036,920.80 so that the additional emergency work can be carried out.
Contact Name and Telephone Number:
M. Chung, Manager of Structures
392-8341
T. DenesW. A. Liczyk
Executive Director, Technical ServicesChief Financial Officer and Treasurer
Barry Gutteridge
Commissioner, Works and Emergency Services Department
MC/sc/bm
