The National Security Agency and the U.S. Army Corps of Engineers narrowed the more-than-a-dozen engineering and construction firms bidding on a $1.7-billion data center project at Camp Williams in Utah to just five sets of companies in April.

The five finalists are Whiting-Turner of Baltimore and Dynamic Systems of Austin, Texas; Turner Construction of New York, Kiewit Building Group of Omaha, and Jacobsen Construction of Salt Lake City; Skanska USA Building of Parsipanny, N.J., and Oakland Construction of Salt Lake City; Balfour Beatty Construction of Dallas, DPR Construction of Redwood City, Calif., and Big-D Construction of Salt Lake City; and Hensel Phelps Construction of Greeley, Colo.

The contract, which will be awarded in October, will require the builders to complete the approximately one-million-sq-ft data center in just over three years.