We use the sandblasting method mainly in our projects in the civil engineering sector such as the rehabilitation of exterior structures, bridges, footbridges and viaducts.

Larocque Bridge - Sign of corrosion

Robust and versatile equipment

Our robust and versatile equipment allows our painters to remove contamination, corrosion and coatings from most surfaces such as wood, steel-wood, concrete-wood bridges, walkways, docks and culverts. Sandblasting produces different surface profiles and increases the adhesion of coatings.

Safety of our employees

The safety of our employees is paramount when it comes to using powerful equipment and working at extreme heights or in areas where the air is controlled, such as in protective enclosures. This is why we promote the safest work methods, taking into account the safety standards established by the Commission des normes, de l’équité, de la santé et de la sécurité du travail (CNESST).

Lashing system for painting at height

Prevention and occupational health and safety practices are regularly reviewed with our painters thanks to our trainer who has acciSST accreditation. The safety of our employees is also ensured by regular inspections of all our equipment as well as all the material required to work in high structures (scaffolding, platforms and scissor lifts).

We are passionate about the environment. In all projects, we implement an environmental protection enclosure to reduce our impact on the environment.


The Larocque Bridge links the cities of Saint-Stanislas-de-Kostka and Salaberry-de-Valleyfield, a city located 62 km southwest of Montreal.

It is a vertical type drawbridge with a counterweight that raises the middle deck to allow boats to pass. This bridge overhangs the St. Lawrence River and crosses an important maritime route (Beauharnois Canal).


Larocque Bridge, Salaberry-de-Valleyfield, Quebec
General Contractor | The St. Lawrence Seaway Management Corporation
Civil Engineering

  • North and South Tower Rehabilitation
  • Sandblasting
  • Extreme temperatures
  • Installation of suspended safety platforms
  • Environmental protection enclosure
Larocque Bridge - view of the north and south towers Credit: Jeannine Haineault photographer

This civil engineering project was awarded to us in 2016 by the St. Lawrence Seaway Management Corporation and its mandate consisted of restoration work involving the cleaning, repair and painting of the steel structure of the south and north towers of the mobile deck.

This work was carried out in the middle of winter, from January to March.

The cleaning and repair of the steel surfaces was done using the sandblasting method. Suspended safety platforms and scaffolding were installed in accordance with the safety standards established by the Commission des normes, de l’équité, de la santé et de la sécurité du travail (CNESST).

Protecting the environment is important to us, which is why we make sure to minimize our impact on the environment by installing an environmental protection enclosure. This enclosure allows us to recover the waste created during the restoration work.

The safety of our employees is paramount, especially in extreme working conditions requiring a sophisticated securing system. The inspection of fall protection equipment (harnesses, lifelines, ropes) is therefore essential and the securing techniques must be adapted according to the type of load, taking into account the weight, the height and the materials to be transported.

Larocque Bridge - Protective Enclosure
Inspection with sophisticated docking system

Training of our employees

That is why we have invested in training for our employees with the acciSST Group. We ensure that this training is renewed annually. To ensure that all our employees understand the importance of having a safe environment, we have trained one employee to become an acciSST trainer.

Steel bridge structures are continually exposed to the elements and extreme temperatures. Therefore, they require a specialized paint that will resist corrosion. Our civil engineering project expert is NACE certified, giving them expertise in the type of coating materials and the techniques for preparing and applying these materials to various surfaces such as steel or concrete. This accreditation also allows us to non-destructively inspect the applied coatings and thus guarantee the quality and professionalism of our services.

We delivered this major project on time by deploying crews in continuous rotation 24 hours a day, working day and night.

It was critical to minimize the amount of time the cleaned steel surfaces were exposed to the outside elements to prevent rust from re-establishing itself.

Larocque Bridge - top view