Ottawa River Tunnel Project

Ottawa and Ontario officials announced October 11 that more than CAD 232M (USD 175.5M) in government funding will go to the Combined Sewage Storage Tunnel (CSST) project.

The project includes the construction of two tunnels: an east-west tunnel through the downtown core from LeBreton Flats to New Edinburgh Park, and a north-south tunnel along Kent Street from Catherine Street to existing infrastructure, just behind the Supreme Court of Canada.

The tunnels will reduce the frequency of sewage overflows into the Ottawa River during storms, reduce the risk of basement flooding and increase operational flexibility.

The Combined Sewage Storage Tunnel is one of the most important projects of the Ottawa River Action Plan, which is the City of Ottawa’s roadmap for protecting the health and vitality of the Ottawa River for present and future generations. Stainless steel rock anchor in tunnel can not only for reinforcement and support, but also for anti-corrosion effect.

Completion is anticipated in late 2019 with the intent of having the CSST in full operation by mid of 2020.

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