Civil engineering

City of Joliette

Cost of work


Completion period



Replacement of infrastructure on the section of Saint-Pierre Street South located between Saint-Antoine and Lépine streets. This work included, but was not limited to: replacement of the drinking water distribution network, replacement and separation of the combined sewer system into a sanitary sewer system, reconstruction of the wastewater control structure (Lépine regulator) belonging to the Régie d’assainissement des eaux du Grand Joliette, integration of a wastewater flowmeter with telemetry on the sanitary overflow, construction of a new storm sewer system including a new outfall to the L’Assomption River, and embankment stabilization work, Redevelopment of the intersection of Saint-Pierre Sud and Lépine Streets and integration of traffic lights, redevelopment of the vehicular and pedestrian lanes of Saint-Pierre Sud Street and integration of a one-way bicycle path, redevelopment of the intersections of Saint-Antoine, Piette and Perreault Streets with Saint-Pierre Sud Street to promote active transportation (walking and cycling), by constructing an elevated intersection.

02 / particularities

Project carried out on a major artery in downtown Joliette near important cultural sites and a busy park.  The work was spread over a 32-week period, requiring a quick adaptation to the weather conditions.

03 / complexity

Large diameter (400 mmØ) potable water network, large diameter (2400 mmØ) and very deep (more than 9 meters) storm sewer network, shallower secondary storm sewer network for service entrances and catch basins, construction of a new storm sewer outfall with concrete block retaining wall reconstruction of a major sanitary flow regulator (342 l/s) belonging to the Régie d’assainissement, work in contaminated soil, relocation of Hydro-Joliette poles required, relocation of Energir’s network required during the work, traffic management measures (projections, raised intersection), installation of traffic lights.

04 / services provided
  • Work planning and preliminary studies
  • Citizen consultation
  • Applications for certificates of authorization to the MELCC and MFFP
  • Plans, specifications and call for tenders
  • Office and site supervision

Work carried out under ground (10 meters deep) with numerous network crossings. Construction of a new storm water outfall for the main watershed of the City of Joliette. In addition, numerous validations had to be made in the design of the stormwater network since the depth of the stormwater network made it out of standard (out of application of BNQ 1809-300 provided for pipes less than 7 meters deep).

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