Spokane Freya-Wellesley T-mains

A new roundabout in Spokane resulted in new drinking water mains from Varela

The City of Spokane was working collaboratively with the Washington State Department of Transportation (WSDOT) to construct a roundabout at the intersection of Freya and Wellesley in conjunction with WSDOT’s work on the North-South Freeway in north Spokane, Washington. The City had several large drinking water transmission mains located in this intersection that needed to be relocated or replaced. It was critical that the utility replacements be coordinated with WSDOT’s design of the roundabout.

Transmission Main Details

Varela engineered and managed the installation of 1,200 linear feet of 30-inch transmission main and 800 linear feet of 12-inch distribution main. Check valve assemblies were installed to separate the transmission system from the distribution system. A blow-off assembly allowed for draining of the transmission main, and Air/Vac relief stations were put in place.