Locust Street will be closed in downtown Walnut Creek April 28 and 29 for the Pacific Fine Arts Festival. The Route 4 Free Ride Trolley will travel on California Street to Mt. Diablo Blvd. in the southbound direction (going TO Broadway Plaza) using existing stops on Lacassie, Cole, Trinity, and Bonanza. The bus will travel the regular route returning to the Walnut Creek BART Station.