Loy S. Clark founded Loy Clark Pipeline Company (LCP) which turned out to be the first pipeline construction company in Oregon in 1956 with just twelve employees.  Beginning in 1957, LCP brought the first natural gas lines into Portland, Oregon.  In the first several years LCP installed a milestone of over 45 miles of 10”, 12” and 16” steel natural gas feeder lines for Portland Gas & Coke (now known as NW Natural).  LCP continued to provide the infrastructure for natural gas to nineteen (19) other towns and cities in Oregon as well as five (5) cities in Southwest Washington.  Even today LCP continues installing distribution expansion for several natural gas utility companies.

Over the next several decades Loy Clark Pipeline diversified within the utility industry, added multiple clients including Portland General Electric, and added several inter-company divisions to include electrical/communication infrastructure installation, directional drilling, asphalt paving, sawcutting, and vacuum excavation.  Loy Clark was one of the pioneering companies who began using horizontal directional drills (HDD) which is now the primary preferred method to install conduits and pipes for the electrical, communication and natural gas industries.

In 1999 Loy Clark Pipeline Company was acquired by MDU Resources Group Inc., and became part of Utility Services Group which is now known as MDU Construction Services Group Inc.

Today, Loy Clark Pipeline is one of the largest contractors of its kind in Oregon. Loy Clark Pipeline serves all major utilities in the area and also provides our unique variety of services to a diversified group of construction and technical services companies in the Pacific Northwest.


Founder, Loy S. Clark

Providing excellent service since 1957

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