Sixth Street Viaduct
The Sixth Street Viaduct, also known as the Sixth Street Bridge, is a viaduct bridge that connects the Arts District in Downtown Los Angeles with the Boyle Heights neighborhood.
6th Street Viaduct
6th Street/Whittier Boulevard
Metrolink tracks, Los Angeles River, Union Pacific Railroad tracks, Santa Ana Freeway, Golden State Freeway, several local streets
Downtown and Boyle Heights areas of Los Angeles, California
Sixth Street Bridge from the LA River
6th Street Viaduct
City of Los Angeles and California Department of Transportation (Caltrans)
53C-1880 (City of Los Angeles), 53-0595 (Caltrans)
Reinforced concrete and steel
3,500 feet (1,100 m)
46 feet (14 m)
November 9, 1932[1] (Original viaduct)
July 9, 2022 (Replacement viaduct)
January 27, 2016 (Original viaduct)
The Sixth Street Viaduct spans the Los Angeles River, the Santa Ana Freeway (US 101), and the Golden State Freeway (I-5), as well as Metrolink (Orange County and 91/Perris Valley lines), Amtrak (Pacific Surfliner and Southwest Chief), and Union Pacific (along with Metrolink's Riverside Line) railroad tracks and several local streets. The original, which opened in 1932 and was demolished in 2016, was replaced; the replacement was officially opened in 2022.
The predecessor was composed of three independent structures: the reinforced concrete west segment, the central steel arch segment over the river, and the reinforced concrete east segment. In 1986, the Caltrans bridge survey found the Sixth Street Viaduct eligible for inclusion in the National Register of Historic Places.[2]
The demolition of the predecessor bridge was due to serious structural issues, including several large cracks, resulting from the high alkaline content of the concrete composition, due to architectural unsophistication. As a result, concerns over the structure's seismic instability outweighed its historical status, leading to its closure for demolition and replacement in January 2016. The new replacement bridge was completed six years later and opened on July 9, 2022.