April 28, 1998
To:Urban Environment and Development Committee
From:Interim Functional Lead, Transportation
Subject:Appointment of Consultant for Design and Supervision of Construction Services for the Humber Bridges Project -
Bridges Nos. 4, 5 and 6
Purpose:
To obtain approval for Delcan Corporation, Consulting Engineers to provide design and construction supervision services
for the Humber Bridges Project, Bridges Nos. 4, 5 and 6.
Funding Sources, Financial Implications and Impact Statement:
Funding for this project has been approved by Council and is available in the Capital Account 271-028, Replacement of
Gardiner Humber Bridges. The estimated cost of design is $526,289.00 and for construction supervision, based on an
assumed contractor work schedule of 16 hours per day, 6 days per week, the estimated cost is $15,713.00 per week. The
estimated construction period is 100 weeks.
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.
Recommendations:
It is recommended that:
(1)Delcan Corporation, Consulting Engineers, be retained to provide design and construction supervision services for the
Humber Bridges Project, Bridges Nos. 4, 5 and 6, the final three bridges of the project, as outlined in this report; and
(2)the appropriate City Officials be directed to take the necessary action to give effect thereto.
Background:
By adoption of Clause No. 4 of Report No. 12 of the Transportation Committee, October 6, 1987, Metropolitan Council
approved the appointment of Delcan (DeLeuw Cather Canada Limited) to carry out the design and construction supervision
of the new bridges carrying the F. G. Gardiner Expressway and Lake Shore Boulevard across the Humber River and South
Kingsway. The overall scope of this assignment covered six new vehicular bridges included in the approved scheme for the
Humber Bridges Project and, more recently, the Humber pedestrian/bicycle bridge. To date, Delcan have completed the
design and construction supervision for the realigned South Kingsway Ramp connection to the Gardiner Expressway
eastbound, the Humber pedestrian/bicycle bridge, and the Lake Shore Boulevard eastbound bridge (Bridge No. 1). Delcan
have also completed the design of Bridges Nos. 2 and 3, the Gardiner Eastbound and Westbound bridges over the Humber
and South Kingsway, and are presently providing construction supervision for these two bridges. The next phase of this
project involves the design and construction supervision of the final three bridges of the Humber Bridges Project. These
are:
Bridge No. 4Lake Shore Boulevard westbound ramp to Gardiner westbound;
Bridge No. 5Lake Shore Boulevard westbound ramp to Lake Shore Boulevard; and
Bridge No. 6Gardiner Expressway westbound ramp to Lake Shore Boulevard.
In response to our request for quotations for the next phase of work, Delcan has provided a work plan and estimate for
engineering consulting services that includes design and construction supervision for Bridges Nos. 4, 5 and 6. To be able to
commence construction work on these two bridges by early 1999, following completion of Bridges Nos. 2 and 3, it is
necessary that the engineering design be started at this time to allow tendering to take place in Fall 1998. The contract
involving construction of these three new bridges will also include the staged demolition of the remainder of the old
bridges. Assuming that the same tendering and scheduling strategy is used for Bridges Nos. 4, 5 and 6 as was used for
Bridges Nos. 2 and 3, the next contract is anticipated to take about two years to complete.
Discussion:
The normal range of consulting fees for design of construction projects of this type is in the order of 5% of the estimated
cost of construction of the project. The Delcan estimate for engineering design services for this next phase of the Humber
Bridges Project is based on an upset limit of $526,289.00 which is approximately 2.2% of the estimated cost of
construction. This is due, in large part, to economies resulting from previous work carried out by Delcan on the project
which has established design standards, project specific specifications, and the fact that three similar bridges will be
designed and detailed simultaneously for this phase. Due to the magnitude and extreme complexity of the Humber Bridges
Project, the continuing property negotiations with the CN Railway and the consultative/approval process with the
numerous stakeholders and agencies it would be counter-productive to change consultants at this stage of the project.
The inclusion of three bridges in one contract will also result in a simplification of construction staging for this work,
thereby minimizing disruption for the travelling public. It will also achieve certain economies of scale during the
construction phase such as in the fabrication of structural steel for the bridges.
The following details the work items and the estimated costs for the consultant assignment:
|
(a) |
Estimated Design Cost |
$526,289.00 (upset limit) |
|
(b) |
Estimated Construction Supervision Cost, based on the
assumed contractor Schedule of 16 hours/day, 6 days/week |
$15,713.00 per week of
construction |
|
(c) |
Estimated Construction Period |
100 weeks |
The consultant appointment will be subject to the completion of an agreement containing clauses satisfactory to the City
Solicitor and the Interim Functional Lead, Transportation.
Following completion of Bridges Nos. 4, 5 and 6, we expect that there will be one further contract necessary for
restoration, landscaping and construction of pathways within the Humber Bridges site and the construction staging areas.
Conclusion:
Delcan Corporation, Consulting Engineers, should be retained to provide design and construction supervision services for
Bridges Nos. 4, 5 and 6 of the Humber Bridges Project as outlined in this report.
Summary Chart:
This report conforms with the following:
| Council Approved Three-year Plan(n/a) |
Corporate Personnel and Administrative Policies(n/a) |
| Approved Capital Budget(x) |
Approved Current Budget(n/a) |
| Standing Committee Approved Program Priority(n/a) |
Metro Official Plan(n/a) |
Contact Name and Telephone Number:
B. Craig, Manager of Roads
Construction Branch
392-8312
D. P. Floyd
Interim Functional Lead, Transportation
Reviewed by Barry Gutteridge
Commissioner, Works and Emergency Services
BC/ib
