State Route 91 Sign Rehabilitation Project
Project Updates
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Project Overview
This project spans 14.7 miles of SR-91 from Vermont Ave in Gardena to the Orange County line at postmile (PM) 20.7 in Cerritos. This $34 million project addresses restoration and improvement to multiple assets including: roadside and overhead signs and lighting, irrigation systems for highway planting, and maintenance access points for worker safety, and guardrail. The contractor is Security Paving Company, Inc.
Benefits
Caltrans will rehabilitate and upgrade roadside and overhead signs, lighting, restore highway planting, replace guardrail, and make worker safety improvements along a 14.7-mile stretch of SR-91 in Los Angeles County.
Key Elements
- Rehabilitating 12 overhead sign structures
- Replacing 1,507 sign panels
- Restoring irrigation systems for 18 acres of highway planting
- Improvements to 8 worker safety barriers and 9 worker safety access points. Retrofit upgrades to bridge railings at the westbound SR-91 Alameda/Santa Fe Ave off-ramp
- 7,157 linear feet of upgraded guardrail
Schedule
Construction is scheduled from winter 2025/2026 through summer 2029.
Long-term Ramp Closure
A long-term closure of the Alameda St exit at the Alameda/Santa Fe Ave off-ramp in Compton through September 2026 is necessary for ongoing work to upgrade bridge railings.
February 2026 through September 2026
Westbound SR-91
- Closure of Alameda Street exit at the Alameda/Santa Fe Ave off-ramp
Motorists will detour using the Santa Fe Avenue exit and will be directed to turn south onto Santa Fe Avenue, west on Artesia Boulevard, and north to access Alameda Street.
Overnight Closures
Overnight connector, lane, and ramp closures along State Route 91 (SR-91) from to Gardena in Los Angeles County are scheduled on a weekly basis, with rolling overnight full closures at connectors and ramps as the contractor moves between locations for K-rail installation. Detour routes will be marked for closed connectors and ramps.
During these closures, SR-91 can be reduced to two or three lanes in either direction depending on the project's needs.
Due to weather or operational reasons, the schedule is subject to change including the times and dates, the number of closures and other details.
FAQs
Q: How will motorists be impacted by the work?
A: Motorists can expect overnight lane, connector and ramp closures within the project limits, between Vermont Ave in Gardena and the Orange County line at PM 20.7 in Cerritos.
These closures will not take place during holidays or special events.
All work is subject to change due to weather and construction-related issues. Residents and businesses near the project may experience noise, vibrations and dust associated with construction activities.
Q: Who is the contractor for this project?
A: The contractor for this project is Security Paving Company, Inc.
Q: How do I receive the latest information about closures and detours?
A: Throughout the project, the contractor will place signs along the detour route to direct traffic. In addition, full closure and detour notifications will be publicized on social media.
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For real-time closure information, visit quickmap.dot.ca.gov.
Q: Will construction be paused during special events and holidays?
A: Construction projects follow moratoriums put in place during special events, holidays, etc. Caltrans works with its partners to determine moratoriums for special events including the 2026 World Cup and 2027 Superbowl.
Contact
Colleen Park, Public Information Officer