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405 Freeway closures this weekend a preview of 'Carmageddon II'

September 8, 2012 |  8:03 am


Portions of the 405 Freeway through the Sepulveda Pass will be closed this weekend and next so that workers can prepare the remaining span of the Mulholland Bridge for the final phase of its demolition.

The work is in anticipation of what is billed as "Carmageddon II" -- the full 10-mile closure of the 405 in both direction, between the 10 and the 101 freeways.

The first preparatory closure -- of the southbound 405 between the 101 and Getty Center Drive -- will begin at 11 p.m. Saturday and end at 9 a.m. Sunday. The northbound 405 between Getty Center Drive and Ventura Boulevard will close at 11 p.m. Sept. 15 and reopen at 9 a.m. on Sept. 16.

The full, 53-hour closure is slated to begin about 7 p.m. on Sept. 28, when workers begin blocking ramps along the route. Individual lanes will begin closing about 10 p.m., with the entire freeway expected to be shut down by midnight. The closure is expected to continue until 5 a.m. Oct. 1.

The work is part of the epic project to add a carpool lane to the 405 through the Sepulveda Pass.

During the partial closures, workers will remove the supporting wood structures from the newly built south side of the bridge and will adjust Mulholland Drive's alignment and elevation to meet the bridge's new approaches, the Los Angeles County Metropolitan Transportation Authority and the California Department of Transportation said.

Last July's unprecedented full-freeway closure quickly came to be known as Carmageddon. The effects turned out to be less than feared as motorists stayed home or otherwise heeded officials' warnings to steer clear of the construction zone and the contractor finished work 17 hours earlier than expected.

For many residents along that stretch, the full closure made for a delightful weekend without the usual 405 roar.

This year's work is expected to require the full 53 hours because workers will be removing two sets of bridge support columns rather than one, as was the case last year.

With all of the upcoming closures, transit officials advise motorists to prepare for delays and seek alternate routes, such as Sepulveda Boulevard.

For a listing of daily closures and other updates, visit the 405 project website.


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Photo: Last summer, a lone CHP officer stood watch during the full closure of the 405 in the Sepulveda Pass. Credit: Myung J. Chun / Los Angeles Times