Traffic Advisory Stanislaus County 09/25/26

Closures On Interstate 5 & State Routes 4, 33, and 99

Stanislaus County – The California Department of Transportation (Caltrans) will conduct closures on Interstate 5 and State Route 4 (SR-4), SR-33, and SR-99 for maintenance and construction work in Stanislaus County next week. Work is scheduled to occur as follows:

State Route 4

• Overnight, intermittent one-way traffic control from the San Joaquin/Stanislaus County line to Hoods Creek for paving work beginning Sunday, September 27, through Friday, October 2, 2026, from 7:00 p.m. until 7:00 a.m.
• The above closure is required as part of the SR-4 Farmington Highway Improvement Project. For details, visit https://dot.ca.gov/caltrans-near-me/district-10/district-10-current-projects/10-1c050.

State Route 33

• Overnight, one-way traffic control between Fourth Street and Sperry Avenue for construction work beginning Sunday, September 27, through Friday, October 2, 2026, from 7:00 p.m. until 6:00 a.m.
• Overnight, one-way traffic control between M Street and Eucalyptus Avenue for construction work beginning Sunday, September 27, through Friday, October 2, 2026, from 7:00 p.m. until 6:00 a.m.

State Route 99

• Moving, alternating lane closures between the Merced County Line and the San Joaquin County line for a sweeping operation on Monday, September 28, 2026, from 8:30 a.m. until 2:30 p.m.

Interstate 5

• Long-term, full closures of the northbound and southbound Westley Safety Roadside Rest Areas and the auxiliary lane leading to the southbound rest area exit for construction work.
• Note: This project is expected to continue through summer 2026.

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