From NCMA eNews
July 19, 2018
You often see noise barriers or sound barriers (as referenced in other parts of the country) that line busy roadways constructed from precast concrete panels or tilt-up concrete walls. However, the Washington State Department of Transportation (WSDOT) required something completely different for this stretch of Route 167 in the corridor between Tacoma and Seattle.
This nearly two-mile-long sound barrier is constructed of concrete masonry units (CMU), something that Jim Reynolds, the general manager and safety director of out of Marysville, Washington, hasn’t seen constructed for at least 20 years on the west side of the Cascades. Read more.