The Utah Transit Authority’s West Valley Trax light-rail line in Salt Lake City is being called the nation’s second-largest geofoam project, behind only the massive Interstate-15 reconstruction from 1997–2001.
On June 18, 2008, UTA began construction on a line to a new West Valley city hub. The total project cost is estimated at $250 million and this span covers 5.1 miles. Embankments at some stretches of the route are 50ft high.
The West Valley line is expected to open in 2011, drawing a projected 3,500 daily commuters.
This Trax line used an estimated 1,890,000ft3 or 597 truckloads of geofoam. The first shipments arrived in February 2009, with geofoam installation completed in January 2010.