LOS ANGELES (CBSLA.com) — It’s not quite “Carmageddon”, but another closure is coming to the Sepulveda Pass this weekend.

KNX 1070’s Vytas Safronikas reports starting Friday night, the northbound 405 Freeway will be reduced from five lanes to two.

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The closure is part of the I-405 Sepulveda Pass Improvements Project that will pave the future High-Occupancy Vehicle lane (HOV) and realign the freeway section to incorporate a future northbound HOV Lane.

Lane reductions between the 2.4-mile stretch from Montana Avenue off-ramp and the Getty Center off-ramp in West Los Angeles will be in effect for 55 hours. Northbound lanes will be closed from 1 a.m. to 6 a.m. on Saturday; 2 a.m. to 7: a.m. on Sunday; and midnight to 5 a.m. on Monday.

Motorists are advised to anticipate potential delays when traveling and take Sepulveda Boulevard, Pacific Coast Highway, the 101 Freeway through the Cahuenga Pass and other alternate northbound routes if necessary.

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“There are gonna be some traffic delays in this area, but the southbound 405 will be fully open,” Metro spokesman Dave Sotero said.

The HOV lane now under construction will ultimately extend 10 miles between the I-10 and U.S. 101 and complete the last remaining gap in the I-405 HOV lane network.

All northbound freeway lanes and ramps were expected to reopen to the public by 5 a.m. on Monday.

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For a full list of closures, click here.