Coastal Rail Emergency Projects
Coastal Rail Emergency Project – Area 3
Project Details
The Coastal Rail Emergency Project – Area 3 is constructing a 1,400-foot-long catchment wall on the bluff side of the tracks at Mariposa Point. The wall will extend from the El Portal Beach access point to Linda Lane. The San Clemente Pedestrian Beach Trail will also be restored as part of this project.
Construction work hours are Monday through Saturday from 7 a.m. to 7 p.m.
The schedule is subject to change due to inclement weather or unforeseen operational issues.
Construction Updates
Catchment Wall
Continuous Work During January Absolute Work Windows
Contractors are expected to continuously receive steel beams and rebar cages and stage them at the project site during “absolute work windows” (AWW) in January. Continued drilling may also occur. During an AWW, regular train service is suspended to allow for efficient and safe construction activities along the rail system. The AWW remaining scheduled for January is as follows:
- 11 p.m., Friday Jan. 23 to 5 a.m., Monday Jan. 26
Materials Delivery
Ongoing deliveries of steel beams and rebar cages are expected to continue through March 2026. These materials play a significant role in building the 1,400-foot-long catchment wall.
- Nighttime Deliveries via rail will take place on Sunday and Monday nights, from 11 p.m. to 5 a.m. Materials will be staged at the project site.
- Daytime Deliveries via truck will take place Monday through Saturday, from 7 a.m. to 7 p.m. Materials will be staged on a city-owned lot on the corner of Avenida Estacion and Calle Deshecha and subsequently moved to the project site on Tuesday through Friday nights, between 9 p.m. and 6 a.m.
This work may be loud. Residents may hear back-up alarms and noise from construction activities. The alarms are required by state regulations for employee safety on all construction equipment in use.

San Clemente Pedestrian Beach Trail
The San Clemente Pedestrian Beach Trail will be closed from the North Beach parking lot to El Portal during work hours but will reopen at the end of each workday and will be open on Sundays. The trail will be closed from El Portal to Linda Lane until project completion.
Beach Access
The Mariposa underpass is closed. Beach access at Dije Court and El Portal are temporarily closed to ensure the safety of the public. The public can still access the beach using the El Portal beach underpass and the Linda Lane beach underpass.
View our interactive map for current beach access closures and detour routes.
Staging Areas
Contractors are staging equipment and materials in the North Beach parking lot and on a city-owned vacant lot at the corner of Avenida Estacion and Calle Deshecha. Several parking spaces along Linda Lane will also be utilized for construction vehicle parking on a first-come, first-served basis.


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Construction Notices
- January 2, 2026
- December 19, 2025
- December 12, 2025
- December 8, 2025
- December 5, 2025
- November 21, 2025
- November 14, 2025
- November 7, 2025
- October 31, 2025
- October 24, 2025
- October 17, 2025
- October 10, 2025
- October 3, 2025
- September 26, 2025
- September 19, 2025
- Special Alert - September 12, 2025
- September 12, 2025
- September 5, 2025
- May 29, 2025
- May 22, 2025
- May 16, 2025
- May 8, 2025
- May 1, 2025
- April 25, 2025