Savage Rapids Dam Removal and Replacement Pumping Plant

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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Sellwood Bridge Replacement

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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Lake Oswego River Intake Pump Station

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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Lake Oswego Water Treatment Plant

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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Colorado Lift Station Upgrades

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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Tri-City Water Pollution Control Plant Phase 1

The Tri-City Phase 1 Expansion includes, but is not limited to, an intermediate pumping station, fine screening, aeration basin, blower building, membrane building, ultraviolet (UV) disinfection system, chemical system, galleries, and ancillary systems to expand the designated activated sludge treatment plant by 4.0 million gallons per day (MGD) average day flow/10.0 MGD peak hour flow…

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Juniper Ridge Hydroelectric Project

The Juniper Ridge Hydroelectric project is a $22 MM EPC (Engineer, Procure, Construct) project. The engineering and construction team includes Slayden, Sunrise Engineering, and Burke Electric. The project consists of 2.5 miles of 108″ steel penstock pipe placed within and beneath the existing irrigation canal system. The penstock entrance consists of a rock excavated forebay,…

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Gold Ray Dam Removal

The Gold Ray Dam Removal and River Restoration is a design-build project that included the removal of two dams, a powerhouse, and associated fish ladders. Removal of the Gold Ray Dams represents one of the largest dam removals ever undertaken in the United States. The concrete dam is 38 feet tall by 360 feet long…

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Willow Lake WPCP Headworks and Primary Treatment Improvements

Slayden was selected as the CM/GC on this $92 MM Headworks and Pumping Plant Project for the City of Salem. This fast track project included construction of new headworks, influent and primary pump station, bar screen facility, two electrical buildings, two new primary clarifiers, effluent analyzer building, and an effluent diversion structure. Specific work components…

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Scott Water Treatment Plant Expansion

Slayden was selected, through the RFP process, as the CM/GC on this $27 MM water treatment plant upgrade and expansion for McMinnville Water & Light.  This fast track CM/GC project involved pre-construction services beginning at 80% design.  Slayden provided constructability reviews and value engineering estimates to help bring the project within the budget set by…

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