September 18, 2012 > Road Closure: Walnut Avenue Road Closure: Walnut Avenue Submitted By City of Fremont Sanco Pipelines will be doing utility work that requires closure of Walnut Avenue westbound from Liberty Street to California Street. The closure begins Friday, September 14 through Thursday, September 20, from 9 a.m. to 4 p.m. each day. The eastbound direction of Walnut Avenue will remain open. California Street will also be closed to through traffic during the times noted above.