As part of the ongoing project to improve the I-405 Freeway through the Sepulveda Pass, a complete closure of all northbound and southbound lanes of the I-405 will occur within the Sepulveda Pass during the weekend of July 15-18, 2011. The freeway will close the night of Friday, July 15, at midnight and reopen at 5 a.m. on Monday morning, July 18. The closure is necessary to accommodate the demolition of one-half of the Mulholland Bridge. Sepulveda Boulevard will remain open throughout the weekend.

On Friday, July 15, ramps along the 10-mile closure will begin to be shut down as early as 7 p.m., and closure of freeway lanes will begin at 10 p.m. to ensure full freeway closure by midnight. Ramps and connectors will be reopened by 6 a.m. on Monday morning, July 18. The specific freeway closure boundaries are as follows:

  • Northbound I-405: 10-mile closure between I-10 and U.S. 101
  • Southbound I-405: 4-mile closure between U.S. 101 and Getty Center Drive Ramps

The Los Angeles Police Department, Los Angeles Fire Department, California Highway Patrol, Los Angeles Department of Transportation, Metro and Caltrans are informing the public in advance that if they do not have a critical need to be in or near the vicinity of the closure, they are being asked to avoid the area. Motorists who must travel through this area during this weekend are advised to plan ahead, monitor real-time traffic conditions prior to beginning their trips, and use alternate routes.

Traffic conditions on local streets and freeways within the region of Los Angeles County and beyond are expected to be severe. Expect delays and include additional travel time into your schedule.

As the weekend of July 15-18 approaches, UCLA Transportation will provide additional information, including any designated detour routes and the times and locations of specific ramp closures. Please continue to visit Be a Green Commuter at for the most current information. General information on the I-405 Sepulveda Pass Improvements Project and associated traffic impacts can be found at