By midnight Friday, all lanes and ramps will be closed along a 10-mile section of the northbound 405 Freeway, between Interstate 10 and the 101 Freeway. Southbound lanes will be closed from the 101 Freeway to Getty Center Drive.
The freeway and all ramps are not scheduled to fully reopen until early morning Oct. 1.
Additional information on the closure and alternative routes can be found at http://www.metro.net/405.
Traffic condition updates are available at http://go511.com.
Officials are encouraging residents to "eat, shop and play locally" during the closure. A map of discounts and events is available here.