Signalized one-way traffic control is expected to be removed by October 2026.
San Mateo County — Caltrans has implemented a signalized one-way traffic control on State Route 84 near La Honda as crews begin construction work to address erosion in the San Gregorio creek.
Crews will be working Monday-Friday from 7:00 AM-4:00 PM as they build a new retaining wall, which will prevent erosion in the San Gregorio Creek. Some weekend work should be expected.
Caltrans did implement signalized one-way traffic control including additional measures such as rumble strips to alert drivers of the upcoming lane reduction on SR-84.
Changeable message signs in the area have been activated to assist motorists.
Drivers should expect delays of up to five minutes.
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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