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News » Canada » Contracts awarded for refurb of historic Ontario bridge » published 8 Sep 2017

Contracts awarded for refurb of historic Ontario bridge

Councillors in London have approved the award of construction and inspection contracts for the rehabilitation of the oldest metal bridge on the Ontario Heritage Bridge list.

The council has accepted a CA$7.92m bid from McLean Taylor Construction for the work on Blackfriars Bridge. The bid was the lower of the two received and meets the city's specifications and requirements in all areas, councillors were told.

Dillon Consulting has been appointed to carry out the resident inspection and contract administration of the project for just under CA$570,000.

The bridge was originally built in 1875. The structure is seen as an important cultural asset to the city but has had only had two rehabilitations, which were carried out in 1956 and 1986. It underwent temporary emergency repairs, which were completed in 2013 but were short-term in nature with a life of three to five years. In order to preserve the bridge for future generations to enjoy in any capacity, major rehabilitation is now required, the council was told.

An assessment approved in April this year recommended that the Blackfriars Bridge be rehabilitated, and reopened to two-directional pedestrian and cyclist traffic and eastbound motor vehicle traffic.

The extensive list of planned works includes replacement of cover plates on top chord arches; strengthening of top chord riveted connections; modification to top chord hangers and diagonal connection details; and strengthening of vertical and diagonal truss members, with approximately 15% of the
original members requiring replacement. The structure and its approaches will be illuminated as part of the project.

With proper future maintenance, the planned works are expected to provide a service life estimated at 75 years and an increased load-carrying capacity.



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This article was published on 8 Sep 2017 (last updated on 8 Sep 2017).

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