The San Mateo-Hayward Bridge (commonly called San Mateo Bridge) is a bridge crossing California San Francisco Bay in the United States, linking the San Francisco Peninsula with the East Bay. More specifically, the bridge western end is in Foster City, the most recent urban addition to the eastern edge of San Mateo. The eastern end of the bridges is in Hayward. The bridge is owned by the state of California, and is maintained by Caltrans, the state highway agency.
