Temporary One-Way Traffic Control on Niles Canyon Road in Sunol
Caltrans will implement temporary one-way traffic control on State Route 84 (Niles Canyon Road) near the town of Sunol. Crews will be installing new guardrails on eastbound SR-84. Temporary one-way traffic control is necessary to safely complete this work. Work is weather dependent and expect travel delays.
Work Schedule:
• Duration: Approximately four weeks (Sept. 24 to Oct. 24)
• Traffic control: One-way traffic control will be in place 24 hours daily for the duration of the project.
Learn More: dot.ca.gov/caltrans-near-me/district-4/d4-news/2025-09-23-sr-84-traffic-control
Full Closure of SR-84 in Niles Canyon for Extreme Maintenance Project
Caltrans is scheduled to close State Route 84 in Niles Canyon on Saturday, Oct. 4, and Sunday, Oct. 5, from 5am to 3pm 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.
Traffic Impacts:
• Duration:Full closure of SR-84 through Niles Canyon Oct. 4 and Oct. 5 (5am – 3pm both days).
• Traffic control: Detours and advance message signs will be in place, expect travel delays.
