InGeo Design was retained by Soletanche Bachy Canada to deliver critical shoring design and field engineering support for the replacement of two key highway structures: the Highway 401 bridge over the Raisin River and the County Road 2/34 Bridge near Cornwall, Ontario. These essential infrastructure upgrades required cofferdam systems capable of supporting complex in-water excavation for both demolition and new pier construction.

Drawing on our diverse experience across major infrastructure and transportation projects, InGeo developed a sheet pile cofferdam system with internal bracing designed to accommodate variable site conditions, including differing rock elevations and unforeseen subsurface obstructions. Through direct access to senior engineering staff and agile, field-responsive design updates, we ensured smooth coordination and compliance in a high-risk construction environment.

Key Challenges

• In-water excavation adjacent to active highway infrastructure
• Unpredictable rock elevations and buried obstructions during cofferdam installation
• Tight construction sequencing and regulatory oversight
• Maintaining safe working conditions within constrained cofferdam zones

InGeo’s Role & Scope

• Design of temporary sheet pile cofferdams with internal bracing to support safe removal and replacement of bridge piers
• Responsive design modifications to address varying bedrock profiles and subsurface obstructions
• Field reviews to confirm shoring installation aligned with engineered design
• Direct communication between InGeo’s key personnel and on-site teams to support rapid decision-making
• Application of proven techniques from our infrastructure portfolio to anticipate and mitigate geotechnical challenges