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Periodic freeway closures planned in Fountain Valley as part of 405 widening project

Periodic freeway closures planned in Fountain Valley as part of 405 widening project
A portion of the northbound 405 Freeway in Fountain Valley will be periodically closed over the next two weeks to accommodate construction work. (Courtesy of Orange County Transportation Authority)

Northbound lanes on the 405 Freeway will be periodically cordoned off overnight in Fountain Valley during the next two weeks to accommodate construction work, according to the Orange County Transportation Authority.

Starting as early as Monday night, northbound lanes will be blocked between Brookhurst and Magnolia streets, as will the northbound on-ramps from Brookhurst.

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Closures are expected to continue through April 6 and be in place from 11 p.m. to 5 a.m. weekdays and 11 p.m. to 6 a.m. on weekends. Detour signs will help drivers navigate the area.

Work continues Tuesday on beginning the new Slater Avenue bridge over the 405 Freeway. The span will replace one that closed in September.
Work continues Tuesday on beginning the new Slater Avenue bridge over the 405 Freeway. The span will replace one that closed in September. (Luke Money)

The shutdowns are necessary so workers can begin framing the new Slater Avenue bridge over the freeway. That span will replace one that closed in September.

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The bridge is one of 18 that will be rebuilt as part of the wider $1.9-billion project to expand 16 miles of the 405 between the 73 Freeway in Costa Mesa and the 605 Freeway near Rossmoor, according to OCTA.

Also included in that tally are the Fairview Road bridge in Costa Mesa — which OCTA is tearing down and rebuilding in two stages, allowing it to largely remain open to traffic — and the McFadden Avenue bridge between Huntington Beach and Westminster, which was demolished last year.

The overall 405 widening project entails adding an additional general-purpose lane and a new “express” toll lane to both directions on the 16-mile segment.

Additionally, the existing carpool lanes in each direction will be converted to express lanes.

For more information, as well as updates on planned closures, visit octa.net/405improvement.

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