A crack was found in one of the trusses on the MacKay (presumably a fatigue crack?). While to me this seems like evidence that it's time to move forward with the bridge's replacement, the article below mentions that they are considering a re-decking project similar to the 'big lift' that was done on the Macdonald? Perhaps it might be necessary to extend the life of the bridge sufficiently until a replacement can happen, given that I don't think there's even a solid plan in place yet.
Emergency repair on MacKay Bridge highlights further work to be done in coming years
Quote:
Emergency repairs shut down part of the MacKay Bridge in Halifax after a crack was detected in a steel truss.
The issue was discovered Wednesday night by a painting crew. Halifax Harbour Bridges(opens in a new tab) (HHB) says the engineering team was alerted, at which time a partial closure took place in order to get repairs done.
The bridge commission says the crack was smaller than two centimetres in length. No other cracks were found, and it says there was no threat to safety.
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Quote:
Wright says a lot of the work in recent years have been focused on the MacDonald Bridge – mostly notably the ‘Big Lift.’
That project began in 2015 and saw all 46 deck segments replaced over roughly two years.
It’s now something being considered for the MacKay.
“We refer to that as a major rehabilitation project, and we`re evaluating the feasibility of doing the rehabilitation similar to what we`ve done on the MacDonald Bridge,” said Wright. “Although, this particular bridge, the MacKay, was built substantially different. It was built very economically back in the seventies, but we need to do our homework and see if it`s possible.”
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