Shortlist For Sixth Street Viaduct Competition

Sixth Street Viaduct as it looks now(John Humble)

The Los Angeles Bureau of Engineering has announced three finalists in an international design competition for the $401 million Sixth Street Viaduct Replacement Project. The three finalists—AECOM, HNTB, and Parsons Brinckerhoff—will be asked to design an “iconic” cable-stayed bridge across the LA River between the LA Arts District and Boyle Heights. The project is complicated by overhead high voltage lines, a change of alignment that will remove a kink in the roadway, and numerous right of way and jurisdiction issues near the river.

The bridge—one of the city’s most famous structures and a frequent subject of film crews for commercials and movies—is dying a slow death from “concrete cancer” (aka, Alkali-Silica Reaction), much to the chagrin of preservationists who fought for years to save the structure. The city culled ARUP, Parsons, and SOM from the competition before advancing to the final stage. The finalists will launch a citywide tour or sorts to present their proposals for the replacement project in September. The full schedule for the proposal presentation is available here. A final decision about the winning design team is expected in October.

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