Sound barrier walls alongside busy freeways have long been the standard solution for reducing traffic noise. However, barrier walls are both expensive and time-consuming to build. The U.S. 60 Widening project in Phoenix called for sound barrier walls along a 1.2-million-square-foot area. Sundt and our joint venture partner developed a better way to achieve the goal of reducing noise that was cost-effective and more efficient.
Using the excavated dirt accumulated from the depressed freeway section, we built an earthwork embankment sound barrier that had the same, if not better, effect on reducing noise. The team saved significant time by not hauling away the excess dirt and kept the project’s costs down with less manpower and materials needed to complete it.
The innovative approach took months off the project’s schedule and saved millions of dollars for the Arizona Department of Transportation.
Arizona Department of Transportation
U.S. 60 Widening