Gannett Fleming’s Phoenix projects continue their winning streak with awards from the American Council of Engineering Companies of Arizona (ACEC Arizona) and Engineering News-Record Southwest (ENR Southwest).
At ACEC Arizona’s 2017 Engineering Excellence Awards on Sept. 23, the Tempe Town Lake Downstream Dam Replacement received a Grand Award and the Judges’ Choice Award, the highest honor in the competition. The Tempe Town Dam project now moves on to the national ACEC Engineering Excellence Awards competition.
The Phoenix Sky Harbor International Airport (PSHIA) Terminal 3 Modernization Phase I project also earned a Grand Award, as well as the People’s Choice Award after receiving the most votes from attendees at the event. The project also received an Award of Merit in the Airports/Transit category of ENR Southwest’s 2017 Regional Best Projects competition and will be featured in the Oct. 30 issue of the publication.
“We are extremely proud of the positive impact these two projects have already had on their communities,” said John Derr, PE, executive vice president and West Region director at Gannett Fleming. “Innovative engineering design and teamwork overcame multiple challenges to create structures that are serving as catalysts for long-term economic growth.”
Tempe Town Lake Downstream Dam Replacement
The Tempe Town Lake Dam in Tempe, Arizona, is one of the largest hydraulically operated steel-gate dams of its kind. After the previous dam’s rubber bladder failed unexpectedly in 2010 and drained one billion gallons of water from the lake, Gannett Fleming studied alternatives for the dam replacement and developed the new design. The replacement dam consists of eight hydraulically operated steel gates, each 106 feet long, 17 feet tall, and approximately 300,000 pounds. Steel gates improve the dam’s durability and reliability, while the hydraulically operated system offers heightened safety and operational flexibility.
Gannett Fleming was the project designer and construction manager for the $45 million dam. Prior honors for the Tempe Town Lake Dam, featured in this time-lapsed construction video, include Best Project in the Water/Environment category in ENR Southwest’s 2016 Regional Best Projects competition and a Best in Concrete award from the American Concrete Institute and the International Concrete Repair Institute.
Terminal 3 Modernization Phase 1
The Terminal 3 Modernization project team transformed the 1970s-era building into a modern, world-class facility to meet the needs of a new generation of travelers. “Brutal architecture with good bones” is how PSHIA leaders described the concrete building before work began. The $250 million rehabilitation required demolishing 56,600 square feet of underused floors, installing geometrically complex skylights, and building a 29,380-square-foot addition to provide more space for passenger amenities, including three new escalators and elevators that serve as the main interface with the PHX Sky Train® Portal.
Gannett Fleming served as the structural engineer on the HuntAustin Design-Build team that delivered the project for the City of Phoenix Aviation Department. Prior to winning these latest awards, the Terminal 3 Phase 1 project earned a 2017 Excellence in Structural Engineering Award from the Structural Engineering Society of Arizona.