Arrowhead Tunnels Project Nears Completion
May 21, 2009 - The Arrowhead Tunnels recently achieved a key milestone as this challenging project comes to completion. On April 29, the last pipe section to be installed in the Arrowhead Tunnels was delivered to the project site at Waterman Canyon in San Bernardino, California.
Jacobs Associates, in partnership with Metropolitan Water District of Southern California (MWD), provided design and engineering services during construction of the Arrowhead Tunnels. These tunnels are part of the larger Inland Feeder Project, a 44-mile (71-kilometer) system of large-diameter tunnels and pipelines that will convey water from the Devil Canyon After Bay in San Bernardino County to the junction of the Colorado River Aqueduct and the San Diego Canal in Riverside County. This project will nearly double MWD’s water delivery capability from the east branch of the State Water Project, providing Southern Californians with as much as 650 million gallons of additional water each day. Completion of the Arrowhead Tunnels is the culmination of a 20-year effort in the planning, design, and construction of the Inland Feeder.