US 99 Highway TourStop 16 · Los Angeles CountyOpen US 99 in the Tour AppVirtual Tour of US 99Santa Clarita Valley Santa Clara River Bridge (53-0011) This bridge was completed June 13, 1928 at a cost of about $200,000. It has remained virtually unchanged since then other than the different railing on the west side. … Continue reading US 99 – Santa Clara River Bridge