TALK TO OUR TEAM
Contact us
Ready to put Riddco on your project?
From directional drilling to vacuum excavation, our crews are ready when you are. Pick up the phone and talk to the team that'll do the work.
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Phone
Address
2604 Pleasant Ave
Union Gap, WA 98903
Hours
Monday – Thursday: 7:00 AM – 5:30 PM
Friday: By appointment
Saturday & Sunday: Closed
24/7 emergency utility response available for active commercial partners.
A note on our scope
Riddco is a commercial civil infrastructure contractor. Our crews and equipment are dedicated to telecom, power, and underground utility work for commercial partners, utility providers, and government agencies. We do not take residential jobs. If you're looking for home or small-property work, a local residential contractor will be a better fit.
FAQs
Frequently Asked Questions
Have a different question?
Call us directly. Darcy will pick up and answer.

Call us : 509-575-0489
What services does Riddco offer?
Riddco offers four core services across Central Washington: directional drilling with rock drilling capability, hydro excavation using two Vactor trucks, trenching and plowing for long-run cable and conduit, and aerial civil support for overhead power and telecom infrastructure. All four serve telecom, power, and civil projects across the region.
What areas does Riddco serve?
Riddco serves Yakima Valley, Tri-Cities, Kittitas Valley, and Walla Walla Valley across Central Washington. We also travel to communities throughout the broader region for active partner contracts.
Does Riddco take residential work?
No. Riddco is a commercial civil infrastructure contractor. Our crews and equipment are dedicated to telecom, power, municipal, and utility projects. For residential drilling, excavation, or home utility work, please contact a local residential contractor.
Does Riddco offer emergency response?
Yes. Riddco provides 24/7 emergency vacuum excavation and utility response for active commercial partners across Central Washington.
How long has Riddco been in business?
Riddco was founded by Gary L. Riddle in 1984. The company relocated to Yakima in 1989 and has been owned by Brett and Darcy Armstrong since 2009. We have served Central Washington's underground utility needs for over 40 years.
Who are Riddco's major partners?
Riddco works with Charter Spectrum under unit contract, plus Pacific Power, Benton REA, Columbia REA, Fatbeam, and Zero DB Communications, among other commercial telecom and power partners across Central Washington.
Does Riddco perform electrical or telecom connections?
No. Riddco is a civil contractor. Our directional drilling and Vactor truck work prepares sites for telecom and power infrastructure, but we do not make final electrical or telecom connections.
How do I get a quote from Riddco?
Call 509-575-0489 to talk to our team about your project. You can also email darcy@riddco.com. We typically return calls within one business day.
Is Riddco licensed, bonded, and insured?
Yes. Riddco maintains active licensing, bonding, and insurance required for commercial civil construction in Washington State.

