Caltrans has scheduled weekend closures of freeway ramps at Eastbound I-80/I-680/SR-12 Interchange and Green Valley Road in Fairfield, from Friday, March 25, 9:00 PM until Monday, March 28, to 4:00 AM. Eastbound (EB) I-80 Green Valley Road Exit and the EB I-80 connector ramp to southbound (SB) I-680