Beginning August 3, the northbound I-405 off-ramp to Sunset Blvd. will close, beginning a 120-day closure that will add a longer off-ramp. The new off-ramp, which will be 60 percent longer, will feature 60 percent more capacity to store vehicles and segregate traffic from Sunset Blvd. and the I-405...
Existing Conditions During 120-Day Closure*Sepulveda Way acceleration lane will remain open as is.
*Sepulveda Blvd. and Church Lane intersection will see lane reduction and height restriction.
*Temporary false work bent at median will be added at Bronwood and Sepulveda; left-turn restrictions will apply.
*Sepulveda Blvd. will operate at full capacity in peak directions during peak hours.
*Sepulveda Blvd. off-peak hours configuration will be one lane in each direction from Montana Ave. to Moraga Drive.
Full release from Metro at http://www.metro.net/projects/I-405/sunset-bridge-demolition-reconstruction/
Well, maybe you could worry a little: