[Our Services]


Underground Construction Co., Inc. has successfully executed gas transmission..


Underground has installed electrical transmission and distribution facilities.


Since the 1970’s, Underground Construction Co., Inc. has constructed fuel...


Underground Construction has worked in industrial plants, refineries and rails.

[About Us]

Underground Construction Co., Inc., headquartered in Benicia, California, has provided quality gas, power, airport fueling and telecom construction services for over 75 years.

Since laying our first pipe in 1936, we have successfully completed thousands of government, commercial and private sector construction projects throughout the United States. Underground Construction Co., Inc. is one of the oldest and most respected contractors in the West. We continue to lead our industry in safety, quality, customer satisfaction and community service. Read more

[Current Projects]


  • PG&E Gas Transmission Alliance
  • PG&E Gas Distribution Blanket Service Agreement
  • PG&E Integrity Digs
  • Plains All American Pipeline – 14” Bore, Castaic
  • Southwest Gas M8000 Replacements – Phoenix & Tucson, AZ
  • Electrical

  • PG&E Electric Distribution Performance Partnership
  • Southern California Edison – Chino Hills 500kV Underground Duct Installation
  • Black & Veatch – ZA-1 230kV Underground Duct Installation
  • Fueling

  • Tampa Airport Fueling – Tampa, FL
  • Hunter Air Base – Savannah, GA
  • NAVFAC – Guam Pipeline
  • LAX Terminal 4 Hydrant System Replacement

[Safety & Training]

    ..."Our goal is zero incidents and we are committed personally and professionally to achieve this goal, year after year. Our safety record is second to none and it is the result of a sound safety program, continuous training, education, hard work and discipline. Our goal is that every worker goes home safely every night. Sounds simple doesn’t it? But it’s not! It takes a genuine commitment to employee education, strict adherence to safety policies exceeding regulatory requirements, and a culture that reinforces safety is job one! Underground Construction Co., Inc"

    Learn More

[Industry Affiliations]

Underground Construction's dedication to safety, quality and continuous improvement has enabled us to build and maintain strong client relationships resulting in repeat business with over 90% of our customers.