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47-hour Weekend Off-Ramp Closure on State Route 4 at Harbor Street/Railroad Avenue in Pittsburg

Published:

Schedule: Saturday, May 17, 2025, at 5:00 AM to Monday, May 19, 2025, at 4:00 AM

Contra Costa County – Caltrans has scheduled a 47-hour full closure of the Harbor Street/Railroad Avenue (Exit 23) off-ramp on Westbound State Route 4 (SR-4) in Pittsburg. The work is scheduled for Saturday, May 17th at 5 AM through Monday, May 19th at 4 AM. Work will include barrier repairs and safety upgrades. All work is weather dependent.

Motorists traveling Westbound SR-4 are advised to take the Loveridge Road exit.

Traffic Control Measures:

Detour map for 47-hour full closure of the Harbor Street/Railroad Avenue (Exit 23) off-ramp on Westbound State Route 4 (SR-4) in Pittsburg. Motorists traveling Westbound SR-4 are advised to take the Loveridge Road exit.

Changeable message signs will be in place to assist motorists traveling in the area. Motorists are advised to expect delays and allow extra time.

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.

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