Customer Update: I-680 Contra Costa Express Lanes, August 15, 2017 Document Date August 15, 2017 Document Title Customer Update: I-680 Contra Costa Express Lanes, August 15, 2017 File Name 2017_August15_Customer_Update_Final.pdf Language English Tags View documents also tagged as Contra Costa County (Calif.) View documents also tagged as Express Lanes View documents also tagged as I-680