The Colorado Street Bridge is a historic concrete arch bridge in Pasadena, California, USA. Because it spans the Arroyo Seco, it is often incorrectly referred to in the press as the "Arroyo Seco Bridge".
During the early years of the twentieth century, the Colorado Street Bridge was known locally as "Suicide Bridge" after dozens of suicides. A suicide barrier was added which reduced the number of suicides, but the bridge retained its nickname. In 1989, after the Loma Prieta earthquake in Northern California, the bridge was declared a seismic hazard and closed to traffic. It was reopened in 1993 after a substantial retrofit. The bridge is closed each summer for a festival, "A Celebration on the Colorado Street Bridge", hosted by historic preservation group Pasadena Heritage.