Asphalt Service Professionals With Customer Satisfaction In Mind


Pacific Northwest Oil specializes in the manufacture, distribution, transportation and application of asphalt and emulsion products. We provide liquid asphalt services and emulsion distribution and laydown.

We are one of the largest asphalt companies in the Pacific Northwest. We could not have achieved this without the dedication of our staff. People make us successful, including our employees, our customers, or the end users of our products and services. Our other values – safety, quality, and environmental commitment – support our People value.

Company Info


In Business Since: 1980

State of Incorporation: California

Type of Company: Limited Partnership

License Number: CA License #0052935 Unlimited

CA License #830737 Unlimited

Parent Company: Knife River Corporation

Motto: On time, correct, complete, approved and within budget.

Bonding Capacity:

  • Single job: $100M
  • Aggregate: $900M

D&B Number: 034490987

  • People
  • Safety
  • Quality
  • Environmental Commitment

We strive to be the best and safest asphalt and emulsion company in the area.

Our Parent Company


MDU Construction Services Group is part of MDU Resources Group, which provides essential products and services through two lines of business: regulated energy delivery and construction materials and services. MDU Resources Group, a member of the S&P MidCap 400 index, has $7.0 billion in assets and more than $4.5 billion in annual revenues (as of Dec. 31, 2018). The company has been traded on the New York Stock Exchange since 1948 (NYSE: MDU).

MDU Construction Services Group and its companies provide industry-leading utility construction services across the country. Our services include

  • Transmission, distribution and excavation.
  • Electrical, mechanical and fire suppression.
  • Industrial construction, maintenance and turnaround.
  • Equipment manufacturing, rental and sales.

MDU Construction Services Group has locations in 18 states and is licensed to operate in 43 states. We work with our sister companies across the country to meet our clients’ needs, wherever they may be.

CSG map