Various Closures on Interstate 5 & State Routes 4 & 99
Stanislaus County – The California Department of Transportation (Caltrans) will perform various closures on Interstate 5, State Route 4 (SR-4) and SR-99 for maintenance and construction work within 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 drainage work beginning Sunday, August 9, through Friday, August 14, 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 99
- Moving, alternating lane closures in both directions between the Merced County line and the San Joaquin County line for a sweeping operation beginning Monday, August 10, through Friday, August 14, 2026, from 8:00 a.m. until 2:00 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.
Motorists should expect 5-to-10-minute delays and use alternate routes whenever possible. All work is scheduled to occur as listed but is subject to change due to traffic incidents, weather, availability of equipment/materials, and construction-related issues.
For the safety of workers and other motorists, please Be Work Zone Alert. Caltrans also reminds motorists to #KnowBeforeYouGo by checking QuickMaps on your mobile device or visit quickmap.dot.ca.gov for real-time highway conditions.
