Overnight ramp closures will take place on westbound I-580 at International Parkway / Patterson Pass Road from March 8–13, 2026. This work is part of the ongoing Patterson Pass Overcrossing bridge project. The closures will occur from 9 PM to 3:30 AM on Sunday, March 8, and from 7 PM to 3:30 AM on Monday through Thursday.
The westbound I-580 off-ramp to International Parkway / Patterson Pass Road and the westbound I-580 on-ramp from the same location will be closed. I-580 will stay open in both directions. Detours will guide drivers via Grant Line Road and Corral Hollow Road. Work is weather-dependent and may change. For updates, visit Caltrans QuickMap or contact the project team at (209) 208-0735…