The Toyota Elephant Passage Exhibit at the Denver Zoo is the first LEED® Platinum certified exhibit in the country. As part of the project scope of work, Kiewit demolished 17 existing buildings and redeveloped approximately 10 acres of Zoo space. The exhibit features six expansive outdoor yards, three animal crossings and more than 1.1 million gallons of water for the exhibit animals to enjoy. A unique gasification plant, which is designed to convert animal waste into a power source, was built adjacent to the exhibition area.
The city of Phoenix and Sky Harbor International Airport awarded Kiewit this project. Close coordination with air operations was critical to allow for continuous airline movement at all times. During the 1,030 construction days, project personnel worked more than 220,000 hours without any recordable incidents.
Kiewit constructed the Dry Creek Pedestrian Bridge, The 760-foot covered walkway is the longest single pedestrian bridge span to date over Interstate 25 and connects the light rail station on the west side of the highway with the Inverness business park on the east side.
To meet the needs of a rapidly growing population, Western Summit, in conjunction with Carollo Engineers, designed and built a $43-million, 15 MGD expansion to an existing WTP serving the City of Mountain House, California, including a vast new subdivision. The entire project was completed in less than two years.
In November 2007, Kiewit completed structural improvements to the Verrazano-Narrows Bridge, located at the mouth of Upper New York Bay. The $68 million project included removing aluminum anchorage access plates at the lower-level roadway and sealing the openings with concrete; installing steel maintenance doors; and installing shielding panels at the underside of the deck and on the main cable strands inside the anchorage walls.
This $13 million project involved construction of two new pump stations, which included all structural, architectural, mechanical, and electrical requirements. At the request of the local community, the project team worked together with the owner to redesign and offer solutions to ultimately satisfy the local concerns regarding the aesthetics, which resulted in a Tuscan style building exterior. This project required extensive coordination with local residents, which included door-to-door contact, meetings, and flyers within the community.
Major challenges on this $40 million project included working in the middle of one of the busiest taxiways at the world's fourth largest airport, within 500 feet of departing aircraft and around live utilities. The project realigned Taxiway C and lengthened Sepulveda Boulevard, an adjacent six-lane highway.