Silverado Canyon Road Bridge 174 Pipeline Project
Irvine Ranch Water District contractors will be doing work to reroute a water pipeline to continue service while the County of Orange replaces Silverado Canyon Bridge 174 (55C-0174), where the existing pipeline is located.
Silverado Canyon Road Bridge 174 is located east of School Road, near St. Michael’s Abbey.
February to March 2025 (IRWD):
- To make way for the bridge construction, IRWD contractors will install a water pipeline across Silverado Canyon Road to tie into a new main water line.
February to October 2026 (County of Orange):
- The County of Orange will be replacing bridge. (Contact Orange County Public Works at 714-667-8800 for information on the bridge work.)
November 2026 to December 2026 (IRWD):
- IRWD contractors will install a new pipeline supported by the new bridge.
- Remaining pipeline will be abandoned, and a surge relief vault will be demolished.
Bridge traffic will be reduced to one lane during all phases of construction.
For information on IRWD construction, please email info@IRWD.com or call 949-453-5500.
For information on the bridge construction, please call the Orange County Public Works Department at 714-667-8800.
2025:
Month of February: Construction for the first phase of the project is scheduled to begin on Feb. 19. Initial work will include the installation of a temporary water bypass system. A temporary water service shutdown, currently scheduled from 8 a.m. to 4 p.m. Tuesday, Feb. 25, will be required to connect water service to the bypass line. Customers affected by the temporary shutdown will be notified prior to the shutdown date.
