Closures Between New Los Angeles Avenue and Princeton Avenue Have Been Rescheduled
Ventura County – Caltrans announces an upcoming overnight full directional freeway closure on State Route 118 (SR-118) between New Los Angeles Avenue and Princeton Avenue in Ventura County as part of a project to install safety barrier systems along the Arroyo Simi Overhead Bridge.
The previously announced eastbound SR-118 (New Los Angeles Ave to Princeton Ave) and westbound SR-118 (Princeton Ave to New Los Angeles Ave) closure schedule has been updated. The first directional freeway closure date is below. The full schedule will be released once confirmed.
Westbound SR-118 fully closed from 10 p.m. Monday, October 27 to 5 a.m. Tuesday, October 28, 2025.
On- and off-ramps:
- New Los Angeles Avenue on-ramp to eastbound SR-118 will be closed during overnight construction.
- Princeton Avenue on-ramp to westbound SR-118 will be closed during overnight construction.
All closures are subject to change. Motorists will be detoured via local routes during these closures. See detour details below.
DETOUR INFORMATION
Westbound SR-118 Detour:
- Exit at Princeton Avenue off-ramp
- Travel south and west on Princeton Avenue
- Turn south on Spring Road
- Turn east on New Los Angeles Avenue
- Reconnect to southbound Route 23
All other construction activity will take place during daytime work hours. No traffic impacts are expected during daytime construction.
Ramp traffic will be detoured during the hours of the closures. Caltrans urges motorists to avoid the area during construction and use alternate routes where possible, including U.S. 101, SR-23, and I-5.
This safety project will construct new safety barrier system on both the northbound and southbound directions of SR-118, spanning the Arroyo Simi Overhead in the city of Moorpark. In collaboration with the city of Moorpark and surrounding Ventura County communities, Caltrans initiated planning and design of permanent preventative infrastructure.
Sign up for notifications about the project here: SR-118 Arroyo Simi Safety Fence Form
For more information on the Arroyo Simi Safety project go here: SR-118 Arroyo Simi Safety Fence Project Page
Real-time closures at Caltrans QuickMap.
Caltrans reminds drivers to “Be Work Zone Alert” and to “Slow for the Cone Zone.”