Closures on Westbound I-80 Caltrans is notifying motorists of upcoming closures happening on westbound I-80 for corridor improvements. Work will require a weekend closured from September 19 through the 26th. Motorists are advised to use I-5 or Highway 99 as alternate routes. For more information, visit bit.ly/Yolo80Project. IPL0271330 Sep 12 2025