UpdatedMon, Mar 15, 2021 at 6:40 pm PT Reply Full overnight closures of Interstate Highway 80 in Vallejo are planned for March 17-19. (Shutterstock) SOLANO COUNTY, CA — Two consecutive full overnight closures are planned this week for Interstate Highway 80 in Vallejo as the Six Bridges Project enters its final stage of work on the Springs Road Overcrossing, Caltrans announced. "I-80 will be completely closed in one direction at a time for two consecutive nights to lower the bridge spans on Springs Road Overcrossing," said Caltrans District 4 Spokesperson Pedro Quintana. "A detour will be in place." From 11 p.m. Wednesday, March 17 until 4 a.m. Thursday, March 18, westbound I-80 will be closed — weather permitting— between Interstate Highway-780 and state Highway 37.