Darche Interchange

A game-changing night

Secteur — Travaux civils

Budget — 10m $ - 20m $

Échéancier — 44 semaines

Date de réalisation — 2024

Sector — Construction

Civil

Budget —

10M$ à 20M$

Timeline —

Completion date —

2025

Rebuilding a strategic link while keeping traffic moving. Having reached the end of its service life, the Darche interchange needed to be completely replaced by a new bridge over Highway 410. A 190-foot modular temporary bridge was first installed to maintain traffic flow during construction, before making way for a new curved structure approximately 30 meters wide.

The challenge

On this major Sherbrooke artery, every intervention had to be designed to limit the impact on users and nearby businesses. Added to this reality were a restricted construction site, a tight schedule, and several teams working simultaneously. Certain critical stages therefore had to be carried out within very precise time windows.

Our approach

Work planning was orchestrated around maintaining traffic flow and tight coordination between the various stakeholders. Notably, the 34 steel girders were installed over a single weekend, while the approximately 460 m³ of concrete for the deck were poured in one night. This final operation also helped avoid construction joints and promoted the quality and durability of the structure.

Results

At the end of the project, the Darche interchange gave way to renewed infrastructure adapted to the needs of this vital Sherbrooke sector. Despite the scale of the project, the strategies implemented made it possible to limit disruptions and maintain mobility throughout the construction process.

Other projects

Volkswagen de l’Estrie