The Snoqualmie Falls Hydropower Plant 1, owned and operated by Puget Sound Energy, is the world’s first completely underground powerhouse. Built and carved using hand drills and explosives in 1898, the powerhouse is located in a cavern only accessible via a vertical 294-foot shaft. In 1910, a second, larger power-generation system was built on the Snoqualmie River, below the falls. The hydroelectric plants are considered historically significant because they were instrumental in introducing alternating current electricity to the world.
Project work included demolition and redevelopment of the original subsurface powerhouse and second larger powerhouse, water intake structures, multiple water conveyance systems, and a low-head diversion dam. The project also included construction of a site museum, interpretive center, viewing areas and park facilities, shoreline restoration and protection, and restoration of six historical register buildings.
“Kleinfelder was enthusiastic to work on this project because of its complexity, diverse construction techniques and commitments to the historic power plant and the surrounding environment,”
A museum, interpretive center, viewing areas and park facilities are now available to nearly two million annual visitors. Aside from providing a place for visitors to enjoy the falls, the project now provides clean power for some 40,000 households.
“This was an extraordinary, one of a kind project that exemplifies Kleinfelder’
The award was presented during the 2014 Engineering Excellence Awards Gala on January 24 in Bellevue, Washington. Kleinfelder provided construction management services including comprehensive quality assurance, geotechnical and rock engineering support, materials engineering and testing, and a number of quality-control services. According to ACEC-WA, projects are judged on four criteria: exceeding client expectations;
To learn more about the project, click here (http://www.kleinfelder.com/
Kleinfelder is an employee-owned architecture, engineering, and science consulting firm providing solutions to meet our world's complex infrastructure and natural resource challenges. A global firm with nearly 2,000 employee-owners, Kleinfelder provides planning, engineering, scientific, technical and management solutions. With 50 years of experience, Kleinfelder's reputation of providing innovative, commonsense solutions to the most complex challenges has solidified its status as a trusted partner to its clients and a leader in the industry. Working as a team, our bright people will deliver the right solutions.