Colorado Street Bridge

The Colorado Street Bridge is a historic concrete arch bridge in Pasadena, California, USA. Because it spans the Arroyo Seco, it is often referred to in the press as the "Arroyo Seco Bridge".

The Colorado Street Bridge was designed and built in 1913 by the firm of J.A.L. Waddell, based in Kansas City, Missouri. The structure carries Colorado Boulevard (then called "Colorado Street"), the major east-west thoroughfare connecting Pasadena with Eagle Rock and Glendale to the west, and in Monrovia to the East. It spans 1,486 feet (453 m) and is notable for its distinctive Beaux Arts arches, light standards, and railings. The bridge is on the National Register of Historic Places and has been designated a National Historic Civil Engineering Landmark by the American Society of Civil Engineers.

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.

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