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Major Projects: Heavy Civil

Ruskin has vast experience in Heavy Civil construction, ranging from the construction of dams, power stations and refineries to highway bridges, marine terminals and deep foundations. Examples of this experience include the construction of an intake and concrete spillway for the Ashlu Hydroelectric Project near Squamish, BC. Ruskin was responsible for the building, installation and removal of all formwork, as well as placement of 1500 m3 of concrete. Another project at the Brilliant Dam, near Castlegar, BC, involved the design, procurement and construction of a tailrace diversion beam. A free standing sheet pile wall 15 m deep and 160 m long was constructed by drilling foundation piling to support the whaler system. The daily discharge from the Brilliant Dam required extensive pre-planning to meet the work windows permitted, and Ruskin delivered a safe and on schedule project.

With the purchase of a Stephens Portable Concrete Batch Plant, Ruskin now has the ability to produce concrete directly on site, within two days of equipment arrival. It can be set up in any location, remote or otherwise, and will produce up to 180 m3 of concrete per hour. The batch plant is 100% automated and is controlled by a Marcotte Automated Batch Control System allowing the user to simply plug in the mix design and go. Complete with the batch plant is an automated admixture container, a 110’ radial stacker for loading aggregates, and a 70’ x 140’ Quonset Hut for storage of materials. We started our batch plant for the construction of the Deh Cho Bridge in NWT, a project value of over $162 million. To supplement our on-site Batch Plant, Ruskin also has aggregate crushing equipment.

Project Gallery


Deh Cho Bridge Project

June 30, 2015

Near Fort Providence, NWT

Project Description

Ruskin Construction Ltd. was contracted by the GNWT to construct a 1,045m long cable-stayed bridge spanning the Mackenzie River, near Fort Providence, NWT.  Construction on the Deh Cho Bridge started in the spring of 2008 and was completed in the fall of 2012.

The Foundations Phase of the Deh Cho Bridge Project included the construction of two 500m temporary access trestles to access the eight subsurface cofferdam constructed footings. The trestles had to be installed and removed each season to allow for the spring ice flows, and the footings had to be pre-drilled to allow for the installation of a sheet pile cofferdams. Once the cofferdams had been installed, the excavation was completed to final depth. An average of 600m3 of tremmie concrete was placed in each footing before the balance of the pier construction could begin. The work had to be executed throughout the year, including the winter season, with adjustments made to access during the spring freshet ice flow. Each pier was constructed from the work trestles, including double crane lifts to erect the delta frames for each pier. Ruskin produced over 10,000m3 of concrete on-site for the foundation of the Deh Cho Bridge.

The Superstructure Phase included the launching of 55 steel truss girders and the placement of 280 precast deck panels. This superstructure consists of approximately 3,775 tonnes of steel and 2,850 m3 of precast concrete. The main span is supported by a cable stay system that required a highly engineered work plan for adjustment and tensioning during installation due to the thermal effects of the steel superstructure. The short “frost free” season for weather sensitive work is less than 100 days. During this season, the grout installation, concrete infills and pavement required well laid out construction plans to ensure an efficient execution.

Although the Deh Cho Bridge project presented many logistical, weather and construction engineering challenges, the project was delivered with a first-in-class safety record, high quality, and within the expectations of the owner in terms of schedule. With 100 dedicated and skilled workers on the project since 2008, Ruskin has successfully built the first structure over the largest river in Canada.

Client
Government of Northwest Territories

Project Schedule
June 2008 – November 2012


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