Carmageddon Lowdown: What You Need to Know

WHAT: A 10-mile stretch of the I-405 through the Sepulveda Pass will be completely closed for construction in mid-July. Officials expect extreme traffic congestion on surface streets and freeways within Los Angeles County. Commuters face multi-hour trip delays.

WHEN: For 53 hours over the weekend of July 16 and 17.

  • Closures

  • Ramps as early as 7 p.m. day before.
  • Lanes one at a time as early as 10 p.m.
  • Full closure by midnight.
  • Reopening

  • Monday, July 18 at 5 a.m.
  • Ramps and connectors by 6 a.m.
  • North half of Mulholland Bridge, one lane each way, will remain open after the weekend.


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WHERE: The I-405 will be closed...

  • Northbound from I-10 to US 101 (10 miles)
  • Southbound from US 101 to Getty Center Dr. ramps (4 miles)
  • Mulholland Bridge will also be closed.
  • Haskell off-ramps on US 101 also closed.


WHY: Part of a $1 billion improvement project that will widen the Mulholland Bridge and add a carpool lane to the 405 through the Sepulveda Pass.

WHO: Joint project of Metro and Caltrans. Weekend traffic will be coordinated through a Unified Command - LAPD, LAFD, CHP, LADOT, Metro and Caltrans. The contractor is Kiewit Infrastructure West Co.

By Car


Sepulveda Blvd. will be open, but authorities suggest using it for local access only. Expect extreme delays. Click here for a map of suggested alternate routes.

Seven additional round-trips planned for the Ventura County Line. Nine additional trips on Antelope Valley Line. Pick up a $10 weekend pass to ride any Metrolink train as many times as you want between Friday 7 p.m. and Sunday 11:59 p.m.


Metro Red and Purple Lines will run approximately every 10 minutes all weekend, with six- and four-car trains respectively.

Free Rides
No fare will be charged over the weekend of July 16-17 on the Metro Red, Purple and Orange lines.

Extended Metro Bus Service


Line 2 - Metro Local and Limited - Downtown L.A. - Pacific Palisades via Sunset Blvd. 15 buses added
Line 150 - Metro Local - Canoga Park - Universal City Station via Ventura Blvd. / Northridge via Reseda Blvd. 4 buses added
Line 534 - Metro Express - Malibu - Washington/Fairfax via Pacific Coast Hwy. 5 buses added
Line 704 Metro Rapid - Downtown L.A. - Santa Monica via Santa Monica Blvd. 8 buses added
Line 720 Metro Rapid - Santa Monica - Commerce via Wilshire Blvd. & Whittier Blvd. 5 buses added
Line 733 - Metro Rapid - Downtown L.A. - Santa Monica via Venice Blvd. 8 buses added
Line 761 - Metro Rapid - Pacoima - Westwood via Van Nuys Blvd. 8 buses added**
Line 901 - Metro Orange Line 8 buses added

**Note: Buses will be using Sepulveda Blvd. between Ventura Blvd. and Getty Center Dr.



ADVICE FROM THE AUTHORITIES: Plan ahead, avoid the area, or stay home.




Official outreach efforts so far:




Print Ads




Radio Ads




Online Ads



> 6,000

Orgs Getting Email Blasts







Authorities have created nearly $1 million worth of ads total, and they have employed Caltrans message signs on freeways in Los Angeles and in other counties throughout the state, all to prepare the public for the closure weekend.



NEXT STEP: Reconstruction of the south half of Mulholland Bridge is expected to take 11 months. The I-405 will be closed again at that time for the demolition and reconstruction of the north half of the bridge. Final project completion on the 405 improvement is expected sometime in 2013.


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