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San Juan Creek Bridge Replacement Project

Construction Updates

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.

Project Details

SJC 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.

The project will also:

  •    Construct tracks
  •    Construct a new bikeway underpass
  •    Construct retaining walls
  •    Install new utilities and signals
  •    Remove vegetation

Sheet Pile Installation to Begin as Early as Monday, July 13

What:
Crews are expected to begin installing steel beams, also referred to as “sheet piles". This work requires drilling sheet piles along the slope embankment within San Juan Creek using vibratory and diesel hammers. At this time, no road or trail closures are anticipated.

The surrounding community may be impacted by noise and vibration from this activity.

When:
Beginning as early as Monday, July 13 through September 2026, between 6 a.m. and 6 p.m., Monday through Friday.

This work may be loud. Schedule is subject to change due to inclement weather or unforeseen operational issues.

Pile Installation

Construction Update

Crews are expected to continue working on the second foundation with a series of rebar installation and concrete pours through the summer.

Concrete trucks will access the work area via Camino Capistrano and exit via Stonehill Drive. Water trucks are being deployed along this route to mitigate dust.

This work may be loud. The schedule is subject to change due to inclement weather or unforeseen operational issues.

Drone footage of bridge removal activities

Drone footage of bridge removal activities

Latest Activity



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July 10, 2026
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July 2, 2026

Contact the Outreach Team

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.