Where We Work

Service Areas

Rolling Walla Walla Valley wheat hills behind a line of cottonwoods and autumn brush in the foreground.
Region

Walla Walla Valley

Explore Service Area
Wide view across green Kittitas Valley pastures and an irrigation canal with the valley foothills beyond under scattered clouds.
Region

Kittitas Valley

Explore Service Area
Elevated view across Tri-Cities neighborhoods toward the Columbia River and the plateau beyond under a scattered-cloud sky.
Region

Tri-Cities

Explore Service Area
Aerial view of Yakima Valley farmland and orchards with the Yakima foothills in the distance under warm evening light.
Region

Yakima Valley

Explore Service Area

Ready when you are

Ready to Put Riddco on Your Project?

40+ years of underground utility work across Yakima Valley, Tri-Cities, Kittitas, and Walla Walla. Call to talk through drilling, vac work, or emergency response.

Call 509-575-0489
Two Riddco crew members in orange hi-vis working at the base of a utility pole during an overhead installation, with a bucket truck staged on the street behind them.