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WELCOME

Underground Construction Co., Inc., headquartered in Benicia, California, has provided quality construction services to our clients for more than 75 years. Since laying our first pipe in 1936, we have successfully completed thousands of private and public 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. Our complete range of construction services includes gas transmission and distribution, electrical transmission and distribution, aircraft fueling facilities, industrial, telecommunications and utilities.












Latest News

    11-12-2014

Underground Construction Company Inc., a subsidiary of Quanta Services Inc, has recently been named the 2014 Gas Operations Supplier of the Year and 2014 Safety Supplier of the Year by Pacific Gas and Electric Company. Underground Construction Company provides both electric and gas transmission and distribution services for PG&E throughout Northern and Central California.



    The Gas Operations Award

The Gas Operations Award is highlighted by Underground’s involvement as a PSEP Gas Transmission Alliance Partner with PG&E. The Alliance Partnership is a multi-year contract with PG&E... Learn More


    The Safety Supplier of the Year Award

The Safety Supplier of the Year award recognizes Underground's safety performance... Learn More