Construction of a roundabout, intersection of Route 101 and Davy Avenue, in Rouyn-Noranda

CIMA+ was entrusted with the supervision of the work on a traffic circle to improve road safety and the economic development of the city of Rouyn-Noranda. Site safety, earthworks, foundations, drainage, insulation, asphalt paving, lighting, signage, marking… Nothing was left to chance.

Due to industrial development and increased traffic on the road network, the City of Rouyn-Noranda decided to build a roundabout at the intersection of Davy Street and Routes 101/117 to make the road safer and promote economic development in the area.

CIMA+ was given the mandate to supervise the construction work, where the standards and requirements had to meet both those of the city and those of the Ministry of Transportation, which funded part of the project.

This project included the construction of a temporary diversion road, earthworks, pavement foundation, drainage (drains and culverts), insulation of the roadway, light embankment, curbs and concrete islands, asphalt laying, redevelopment of Mantha Street into a cul-de-sac, road lighting, signage and supersignage and pavement markings.

CIMA+ stood out through follow-ups for coordination between the various stakeholders in the file and by ensuring a close follow-up on the scheduling of the work, the involvement of subcontractors and the budget monitoring for the client.

Technical challenges

The installation of a light polystyrene block backfill was necessary due to the low bearing capacity of the soils. This installation of over 7,000 m3 provided stability to the soils under the roundabout and the approaches.

Additional vigilance was required due to the size of the area and the configuration of the blocks in several rows. This allowed for early identification of adjustments needed to ensure the stability of the structure.

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