Beginning today, the first stage of the 4th Avenue Flyover Rehabilitation project is starting, which means one lane (southside lane) on the flyover will be closed at all times (24/7) and traffic will be reduced to a single lane.
"Throughout construction, there may be lane closures of underpass roads for overhead work. These closures will be temporary and during off-peak hours," The City of Calgary stated on its website. "Access for Emergency Services and Transit will be maintained except during the full closures. Detour routes will be planned."
According to The City, it is investing $12.5 million to help ensure the bridge continues to be functional, reliable, and in good condition for commuter use for decades to come.
"Construction is anticipated to be complete by late fall 2025. Throughout construction, there may be off-peak lane closures of underpass roads for overhead work," The City noted.
The dates of the second stage of the project have yet to be announced but according to the City of Calgary's website, the second stage will include northside lane closures.
Some of the work to be done includes rebuilding existing concrete barriers and adding lighting, as well as replacing existing concrete paving overlay with a polymer-modified asphalt (PMA) overlay, replacing existing expansion joints, and other general concrete repairs across the structure. It is estimated the rehabilitation project will extend the service life of the flyover by roughly 35 years.
A previous full road closure of the flyover to set up construction had lasted from Friday, April till Monday at 5 a.m. However, both lanes will be open to traffic during The Calgary Stampede.
The flyover, originally built in 1982, has two lanes that go toward 3rd Street Southeast. It is one of the main routes into the downtown core.
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