The Orange County Transportation Authority (OCTA), in coordination with Metrolink, is replacing the railroad bridge over San Juan Creek. Built in 1917, the bridge has reached the end of its useful life and will be replaced by a new three-span girder bridge.
The San Juan Creek Bridge Replacement Project is replacing the railroad bridge over San Juan Creek in the City of San Juan Capistrano.
The project is constructing a new three-span girder bridge west of the existing bridge. The new bridge will enhance safety, reduce maintenance needs, and meet current design and bridge load standards. The existing bridge will be demolished, and a new foundation and substructure will be installed for a potential future bridge. There are no plans to construct a second bridge but if a need arises, the supporting infrastructure will be in place.
The bridge serves Metrolink and Amtrak Pacific Surfliner passenger trains, as well as freight trains.
Crews are expected to continue installing steel beams, known as sheet piles, along the slope within San Juan Creek.
Additional sheet pile deliveries are expected to continue, with installation anticipated to continue through September 2026.
This work may generate noise and vibration for the surrounding community. No road or trail closures are anticipated. Sheet pile installation is scheduled Monday through Saturday, between 6 a.m. and 6 p.m.
Schedule is subject to change due to inclement weather or unforeseen operational issues
Work is continuing within San Juan Creek to construct the foundation, with concrete pours taking place weekly. Additional activities include ongoing sheet pile installation, drainage improvements and slope restoration.
Work within the creek is expected to continue through mid-September.
Sheet pile deliveries and construction equipment will continue to access the work area via Camino Capistrano and exit via Stonehill Drive. Water trucks will continue to be deployed along the haul route to help mitigate dust.
This work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.
Installation of rebar cages – July 2026
Crews conducting concrete pouring activities for bridge foundation – July 2026
Crews conducting rebar installation for bridge foundation – July 2026
Delivery of sheet piles into the San Juan Creek – July 2026
Crews preparing the work area to support crane operations – July 2026
Preparing structural foundations for the next stage of bridge construction – July 2026
Crews installing rebar – July 2026
Crews conducting digging and excavation activities – June 2026
Crews working on the second foundation – June 2026
Crews placing rebar – June 2026
Excavation activities – June 2026
Rebar Cage Testing activities – June 2026
Concrete pouring activities – June 2026
Crews removing temporary steel casing – June 2026
Crews conducting excavation activities – May 2026
Aerial view of bridge construction activities – May 2026
Crews conducting steel cage placement – May 2026
Crews installing rebar cages – May 2026
Crews concrete pour activities – May 2026
Crews delivering rebar cages for pile installation – May 2026
Crews conducting excavation activities – May 2026
Crews installing a steel casing – May 2026
Crews delivering backfill – May 2026
Crews working in the creek – April 2026
Old railroad bridge demolition activites – April 2026
Aerial view of bridge girder removal – April 2026
Aerial view of bridge girder removal – April 2026
Aerial view of bridge girder removal – April 2026
Deck removal Activities – March 2026
If you have any questions or would like to request information in another language, please contact the Outreach Team at (800) 724-0353 or email SJCBridge@octa.net.
