Headquartered in Benicia, California – less than an hour from downtown San Francisco – Underground Construction Company, Inc. is one of the oldest and most respected contractors in the West. Since 1936 we have been building trust and infrastructure with our clients in various industries We provide a complete range of construction services including gas and electrical structures, fiber optics, fueling facilities, and municipal utilities. In addition, Underground Construction Company, Inc. has spent over 50 years working in refineries and on heavy engineering construction projects.

In 1998, Underground Construction Company, Inc. further enhanced its capabilities by teaming up with Quanta Services, Inc. Quanta is an integrated, nationwide network of respected firms that construct transmission and distribution facilities for the electrical, petroleum, gas, and telecommunication industries. Joining the Quanta family has enabled Underground Construction Company, Inc. to tackle larger and more complex projects utilizing the specialized resources of our sister companies.

Our Legacy Continues…

As Underground Construction Company, Inc. looks to the future, we continue to apply the valuable lessons we have learned over 80 years of hard earned experience combined with our commitment to safety and quality. This has set the benchmark for today’s employees and resulted in a corporate philosophy of customer-centered service known as “The Underground Way.”

Armed with greater technology and experience, now more than ever, our employees are better equipped to build upon our legacy and deliver another 80 years of unmatched service to our valued clients.

80 years of hard earned experience