Full Closure of SR-84 in Niles Canyon for Extreme Maintenance Project – October 4 & 5, 2025

Schedule: October 4, 2025 and October 5, 2025, 5AM to 3PM each day

Alameda County — Caltrans is scheduled to close State Route 84 in Niles Canyon on Saturday, October 4, 2025, and Sunday, October 5, 2025, from 5:00 AM to 3:00 PM each day for the Niles Canyon Extreme Maintenance Project. Caltrans will carry out intensive maintenance along SR-84 in Niles Canyon. This concentrated effort enhances safety and roadway reliability for motorists, pedestrians, and local communities. For safety, a full closure of SR-84 through Niles Canyon will be in effect during project hours.

Work will include:

• Vegetation removal and tree trimming
• Drainage and culvert cleaning
• Litter and debris removal
• Guardrail and fence repairs
• Mowing
• Graffiti removal
• Electrical and sign work
• Delineation repairs
• Tree limb clearance from power lines (PG&E)
• Rail line repairs along Niles Canyon Railroad

Traffic Impacts:

• Full closure of SR-84 through Niles Canyon Oct. 4th & Oct. 5th (5:00 AM – 3:00 PM both days).
• Detours and advance message signs will be in place, expect travel delays.

All work is weather-dependent and subject to change.

For 24/7 traffic updates, please visit 511.org: https://x.com/511SFBay
For real-time information, visit Caltrans QuickMap: https://quickmap.dot.ca.gov
Follow us on X: https://x.com/CaltransD4
Or call 1-800-472-7623, 1-800-427-ROAD for state highway conditions statewide.

Thank you for your patience as we work to maintain our state’s highways, bridges, and tunnels