The building of a new stadium in Toronto, the Skyway Dome, necessitated the linking of the new development area with the rest of the city. For that purpose, two new bridges were constructed, one of which is a major pedestrian cable stayed bridge providing direct access from the street to the Sky Dome. The design of the bridge is public and open in character, in effect, an extension of the city streets.
The issues involved in the planning and implementation of the rehabilitation of a major bridge in Northeastern Ontario is described in this paper. Highlighted are the problems involved in estimating the cost of rehabilitation as the project progresses through different phases of the work from preliminary inspection to the preparation of the contract documents. Some of the design decisions that had to be made during the preparation of the rehabilitation contract highlighted include: staging of the work, maintenance of the traffic during construction, and selecting methods of repair. Other important issues to be considered were underestimating the extent of deterioration and payment for concrete removal.
This paper describes the construction of the prairie siding bridge over the Thames river in Kent county, Ontario which replaced an existing double leaf bascule bridge built in 1924. A decision to replace the existing bridge by a new bridge was made by the county because of structural and operational deficiencies. After an analysis of design alternatives, a four-span structure, incorporating a balanced double-cantilevered type swing bridge was selected. The bridge provides two 22.3 metre wide navigation channels with the minimum pier end-area within the stream bed. The paper details the design features, costs and construction methods employed on the prairie siding bridge project. (TRRL)
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