680 Closure March 2024. To monday at 4 a.m., concluding more than a year of closures. According to a press release from the transportation agency, construction crews will be closing off the freeway between alcosta boulevard in san ramon and the i.

Friday, april 26 through 4 a.m. According to a press release from the transportation agency, construction crews will be closing off the freeway between alcosta boulevard in san ramon and the i.