Lambton Bridge

Building with 70 feet of water beneath your feet

Secteur — Travaux civils

Budget — 10m $ - 20m $

Échéancier — 44 semaines

Date de réalisation — 2024

Sector — Construction

Civil

Budget —

10M$ à 20M$

Timeline —

126 weeks

Completion date —

2021

The project involved constructing a new 180-metre bridge over the Sauvage River in Lambton to replace the existing structure. The new bridge features two piers in the river, deep foundations, a steel superstructure, and a reinforced concrete deck. Once traffic was diverted to the new bridge, the old structure was dismantled to complete the infrastructure replacement.

The challenge

Constructing the foundations directly in the river was one of the most complex phases of the project. The caisson piles had to be drilled from barges in nearly 70 feet of water, reaching depths of over 110 feet. The sheer size of the steel caissons and rebar cages, combined with the challenges of working on the water, required exceptionally precise coordination of all operations.

Our approach

To carry out this work, each sequence was planned based on the equipment, river conditions, and environmental constraints. Special attention was given to the management of sediment and drilling mud, as well as the handling of steel caissons and rebar cages. Once the foundations were completed, the steel structure was installed using the launching method, allowing construction to progress steadily over the river.

Results

The project replaced the existing infrastructure with a new, sustainable structure tailored to the needs of its users. Once traffic was diverted to the new bridge, the old structure was dismantled—including the removal of concrete from the riverbed—to complete the work while respecting the surrounding environment.

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