Caltrans crews will be busy around San Joaquin County from March 8–14, 2026, with several lane and ramp closures for maintenance and construction.
State Route 4: One-way traffic at the Old River Bridge continues 24 hours a day through November 2026. Vehicles over 34 feet should use SR-12 or I-205 instead. The Filbert Street on-ramp to westbound SR-4 will close overnight March 9–13 from 7 p.m. to 5 a.m.…