STOCKTON / SAN JOAQUIN COUNTY, Calif. — Caltrans has released its next construction schedule for highways serving Stockton, the Delta and western San Joaquin County. The largest planned interruption is a 12-hour full closure of State Route 4 on Sunday, November 15, from 7 a.m. to 7 p.m. between Tracy Boulevard and the San Joaquin–Contra Costa county line.

Local access is to be allowed, but through traffic will need to follow a marked detour. The daytime closure is part of the SR-4 Delta Pavement Improvement Project, according to Caltrans’ November 5 traffic advisory.

Other Highway 4 restrictions

From Monday, November 9 through Tuesday, November 10, Caltrans plans overnight one-way traffic control between Bacon Island/Trapper Road and the Old River Bridge, 8 p.m. to 4 a.m. A separate section near SR-99 and Golden Gate Avenue is scheduled for intermittent night work through November 13, generally 7 p.m. to 7 a.m.

I-5 construction near Stockton

Drivers on Interstate 5 between Hammer Lane and State Route 12 should prepare for alternating overnight lane and full ramp closures from November 8 through November 13. Caltrans lists 9 p.m.–5 a.m. for northbound work and 8 p.m.–6 a.m. for southbound work. The affected ramps include Hammer Lane, Eight Mile Road and SR-12.

The work is part of the I-5 Anchor Pavement Project, which Caltrans says will improve about 34 miles of pavement and shoulders and upgrade several ramps along the corridor.

Before leaving

All times are scheduled, not guarantees; emergency incidents, weather or materials could change work windows. Caltrans advises allowing extra time and checking QuickMap immediately before traveling. Motorists should observe flaggers, temporary speed restrictions and detour signs.

Source: Caltrans District 10 traffic advisory published November 5, 2026.

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