INDUSTRY (CBSLA.com) — The first of four weekend closures on the Pomona (60) Freeway began Friday evening in the city of Industry.

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The partial shutdown through 5 a.m. Monday will affect three westbound lanes of the thoroughfare between Nogales Street and Fullerton Road and on-ramps in and around the area.

The Nogales Street and Fullerton Road off-ramps are also closed along with northbound SR-57 to westbound SR-60 connector, according to Caltrans.

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Caltrans says a full freeway closure is expected Monday from 1 a.m. to 5 a.m. to allow for K-rail installation.

The 55-hour lane closures, dubbed by Caltrans as “Summer Slam,” are part of a $120 million freeway rehabilitation project.

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The next closure is slated for July 26. For more information, click here.