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Projects & Studies

OC Infrastructure Programs

OC Infrastructure Programs manages OC Public Works' Road and Bridge, Flood, and Bikeway Projects approved by the County of Orange Board of Supervisors and listed in the 7-Year Capital Improvement Program.  Visit our 7-Year Capital Improvement Program page for direct links to downloadable project lists and interactive maps.



Project Name Fiscal Year District Notes
Canyon Bridges Replacement Project 20/21, 21/22 3 Silverado Canyon Road and Modjeska Canyon Road 
Santa Ana Ave & University Dr. Roadway Improvements & Community Park 20/21 2 Northeast corner of University Drive and Santa Ana Avenue in the Unincorporated Orange County area of Eastside Costa Mesa. Completed March 2021.
Santa Clara and Prospect Avenue Drainage Improvements and Sidewalk Gap Closure 21/22 3 The project consists of constructing drainage and sidewalk improvements.
Santiago Canyon Road Safety Improvements 20/21 3 The project consists of providing high friction surface treatment, installing flashing beacons, delineators, reflectors, rumble strips, upgrading of signage, and increasing bicycle safety by striping a buffer zone.
Trabuco Canyon Road Bridge Replacement Project 22/23 3 The project consists of replacing the existing bridge with a new bridge of adequate lane width which will also address overtopping during storm events.


Project Name Fiscal Year District Notes
Santa Ana-Delhi Channel Improvement Project   5 Planned improvements along the flood control channel area include addressing erosion along the channel sides and replacing the Bayview Trail Pedestrian Bridge.
East Garden Grove-Wintersburg Channel Project 20/21 2 Warner Avenue to Goldenwest Street, Huntington Beach (Complete)
Yorba Street Drainage & Roadway Improvements 21/22 3 Planned improvements along a portion of Yorba Street in unincorporated Santa Ana designed to reduce flooding, reduce the need for frequent roadway maintenance and improve pedestrian safety. 
San Juan Creek Flood Risk Management Feasibility Study     Project Study


Project Name Fiscal Year District Notes
OC Loop Segments O,P,Q 24/25 4 Bridges the 1.6-mile gap in existing Coyote Creek Bikeway