Gone are the days when “green building” meant modest structures made with recycled products. The term now applies to modern marvels of construction in all areas of public infrastructure.

The Chaparral Water Treatment Plant in Scottsdale, Ariz., is one such project.

The facility, which treats 30 mgd, consists of more than 100,000 cu. yds. of concrete, much of it featuring low water-to-cement ratios, recycled aggregate, air entrainment, and fly ash. The surrounding site includes a number of eco-minded features. For example, the park adjacent to the plant boasts xeriscapes that use drought-resistant vegetation, which conserves water, filters stormwater runoff, and provides a habitat for native wildlife. For more information, visit www.ci.scottsdale.az.us.

In addition to local awards for engineering and public art, the facility has added a national award to the pile. Cemex—one of the world's largest cement producers—applauded the plant with its Infrastructure Award, part of its Second Annual U.S. Building Awards, in late April. Other infrastructure project finalists include:

  • Atlanta's Hartsfield Airport runway replacement, which used 46,800 tons of low-alkali cement
  • The 3464-foot New Carquinez Bridge in Vallejo, Calif., which is designed to withstand earthquakes
  • Houston's Katy Freeway expansion, with redesigned bridges and culverts that minimize impact on wetlands and wildlife
  • Tampa's Lee Roy Selmon Crosstown Expressway, with 110,000 cu. yds. of high early strength concrete.

For more information, visit www.cemexusa.com.