The Antelope Station Grid Switching Expansion Project will allow an existing generating station to switch between the SPP and ERCOT grid systems. Kiewit Engineering and Design is designing the switch to a grid configuration consisting of a single-breaker, double-bus.
This $721 million design-build project involves constructing one 10-mile high-occupancy vehicle (HOV) lane northbound on Interstate 405 from Interstate 10 to U.S.-101. The project will realign existing on and off ramps, reconstruct or modify 23 bridge and ramp structures, build approximately 18 miles of retaining walls, and perform road improvements on the adjacent city streets.
Constructed in a tight area next to a major corridor on the Clarkson College campus, this fast-track project was completed in 11 months. The fully furnished suites have four bedrooms, two bathrooms, a living room, kitchen and voice, data and cable access. Laundry facilities and a storm shelter are located on the lower level.
The 9400 Dodge project included the renovation of core and shell components of a three-story office building and three separate tenant fit outs. Core and shell improvements included the removal and replacement of all existing finishes, restroom upgrades and renovation of the main entryway.
Due to the long history of rockslides and land slippage, Kiewit constructed tunnels to bypass the Devil's Slide portion of Route 1 so motorists can avoid these major slide areas. Using the New Austrian Tunneling Method, which relies on inherent rock strength for support, crews constructed the tunnels through granitic, sandstone and shale formations. The tunnels are approximately 4,100 feet long, 30 feet wide, 22 feet high and 60 feet apart.
Lake Mead Constructors was selected to construct this $146 million 150-mgd water treatment plant. The project later expanded to include an additional $31 million 150-mgd phase. During construction, the project team took steps to minimize impacts to the surrounding community by applying several aesthetic enhancements and establishing an on-site concrete batch plant to reduce truck traffic.
The project included the design and construction of transmission structure foundations, including upgrading and converting existing 138kV to 230kV with new structures, power conductors and OPGW. The project also incorporated the demolition and reinforcement of existing 138kV structures.
Kiewit Pacific Co. is constructing updates to the Waterman Treatment Plant originally constructed in 1974. The improvements will increase the plant's capacity from 15 million gallons per day to 30 million gallons per day. In an effort to modernize the plant, many of its facilities will be completely or partially torn down and replaced.
Originally constructed in 1956, the Water Pollution Control Plant provides the primary treatment for 36 millions of gallons of wastewater. To improve its wet weather reliability and reduce the need to discharge untreated or under-treated wastewater into the San Francisco Bay, Kiewit Pacific Co. constructed upgrades to the plant.