Railroad Bridge Replacement Project Over San Juan Creek 


The Southern California Regional Rail Authority, in collaboration with the Orange County Transportation Authority (OCTA) and Metrolink, is embarking on an important infrastructure project - the replacement of the century-old railroad bridge over San Juan Creek.  This vital upgrade, located near the southeastern boundary of Santa Margarita Water District’s Groundwater Recovery Plant and just east of Descanso Park, addresses a need to replace the existing bridge due to its advanced age and deteriorating condition.

To ensure a seamless transition, the current bridge will remain operational until the completion of the new structure, which is being constructed slightly to the west of the existing location.  This strategic placement minimizes disruption and ensures continued rail service during the construction phase.

The project necessitates a temporary closure of the popular bikeway that runs east from the I-5 Freeway to the trail along San Juan Creek.  This closure is projected to last from April 2024 through December 2026.  Recognizing the importance of maintaining uninterrupted bike access, the various entities involved have planned a comprehensive detour route for cyclists.  This detour will start from Avenida Padre, proceed along Camino Capistrano, turn left onto Del Obispo Street, and then join the Trabuco Creek trail levee, continuing southward.  For detailed navigation, please refer to OCTA’s FAQ and Detour Map (PDF).    

For any additional information or inquiries regarding this project, please feel free to reach out to OCTA staff at SJCBridge@octa.net or 800-724-0353.