May 2018


Another Milestone! The First Concrete Y-Bent!

This is big! The Bureau of Engineering has reached another milestone in the Sixth Street Viaduct Replacement Project: Our very first concrete Y-bent! During the week of April 16th, our contractor  spent 10 hours pouring more than 200 cubic yards of concrete into the Y-bent frame. After the concrete set, we were able to remove the forms to reveal the first concrete Y-bent, the Y-shaped piers that will serve as the support structures for the deck of the viaduct. The first Y-bent is located between S. Clarence Street and S. Anderson Street. The falsework, which is the temporary frame made of blue metal that supported the Y-bents during their construction, has been taken down leaving the Y-bent clearly visible. The new structure allows us to see how graceful and unique the Sixth Street Viaduct design is and what it will look like when all eighteen Y-bents are in place, supporting the new iconic bridge.

About the project

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The Sixth Street Viaduct Replacement Project is a new, 3,500-foot long viaduct connecting Boyle Heights and the Arts District across the Los Angeles River. The original viaduct was built in 1932, but had significantly deteriorated due to "concrete cancer"; it was demolished in 2016. The new viaduct will have ten pairs of lit arches, bike lanes and wider sidewalks, along with stairway access and bike ramps connecting to 12 acres of recreational and open space under the bridge. The $482 million dollar project is the largest bridge project in the history of the city. The bridge is funded primarily through the Federal Highway Administration, with additional City support. The viaduct is expected to be completed by the end of 2020.

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The Bureau of Engineering is the City's lead agency for the planning, design and construction management of the City's public buildings and its public infrastructure. Engineering is also responsible for managing permitting for all construction that takes place in the public right-of-way, as well as managing the City's state-of-the-art online mapping system, NavigateLA. Engineering is committed to designing and building environmentally-sustainable projects that include extensive community input. Engineering projects and services support the City's goals of creating a prosperous, livable and safe city for all residents and businesses.

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