The Westbury hydroelectric complex, located on the Saint-François River, plays an essential role in power generation for the city of Sherbrooke. Built in 1929, the structure spans almost 93 m and includes a 58 m spillway with five openings, four of which are equipped with steel gates. The power station generates around 4,800 kW via two generator sets. Although major refurbishments had been carried out between 1991 and 1994, it had become necessary to undertake new work to maintain the dam’s integrity and performance.

Our team was commissioned to carry out a number of essential refurbishments, including replacement of the spillway guide channels and sills, stabilization of the left wing wall, and concrete work under the downstream invert. Services included in-depth preliminary design, facility investigations, preparation of plans and specifications, and participation in the tendering process. We also provided complete supervision of the works, overcoming the technical challenges associated with cement grouting and replacement of the weir’s metal components.