This $28.3 MM project included construction of an intake structure and pumping plant with large vertical turbine pumps and piping to supply five different irrigation canals. The sequence of work on this project required three in-water-work periods over a three year duration. Major components of work include the installation of multiple contractor-designed and installed cofferdams…

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Slayden teamed up with Sundt Construction in a joint venture to provide Multnomah County the Sellwood Bridge Replacement project. This project involved replacing the 2,000-foot-long, aging Sellwood Bridge over the Willamette River. The existing steel bridge was shifted to the North and placed on temporary pillars for use as a detour. This innovative approach allows…

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This project is located on the right bank of the Clackamas River in Gladstone, Oregon. The scope of work consisted of constructing a new 38 MGD river intake pump station to supply water to the cities of Lake Oswego and Tigard. When commissioning of the facility was completed, demolition of the historic adjacent river intake…

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This major project includes upgrades to the existing WTP from 16 MGD to 38 MGD. The new replacement facilities constructed on top of existing facilities in three phases. After completion of each phase, demolition of existing structure occurs to construct the new facilities. All work is done while ensuring the existing plant produces water. Total…

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Bend’s sewer collection system is near capacity. In some areas, existing sewer pipes routinely approach overflow levels. In parts of the city it is difficult for Bend to add any major new employer or residential development. The Colorado Lift Station project upgrades and replaces the undersized and deficient Shevlin station in McKay Park. The new…

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Slayden, a subsidiary of MWH Constructors, Inc., was selected as the construction manager/general contractor (GM/GC) for a $27 million project for a new Water Treatment Plant in Lebanon, Ore. The project is scheduled to begin in May 2017, with a substantial completion date of December 2018. The new water treatment plant will completely replace the…

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