The Rebuilt On-Ramp will have nearly a 300% Greater Capacity


The Eastbound Wilshire On-Ramp to Northbound I-405 is now closed.
Only 89 more days to go before it is reopened.

Phew! This is last extended ramp closure that will be required for the Wilshire Interchange, as well as the last of its kind for the entire freeway improvements project.

The extended duration closure is required for the contractor to demolish the existing on-ramp and build a new, significantly longer freeway on-ramp that, when complete, will have nearly 300 percent greater capacity than the current freeway ramp.

The new ramp will be 3,129 feet long compared with the current ramp at 824 feet, and is expected to allow far more vehicles to queue on the ramp rather than Wilshire and Sepulveda Boulevards. The ramp will be opened to be public as soon as it is complete. Though we are looking at a 3 month window.
The on-ramp averages 8,000 vehicles per day, according to the California Department of Transportation (Caltrans).


  • Southbound Sepulveda Boulevard to Westbound Santa Monica Boulevard to Northbound I-405.
  • Alternate Route: Southbound Sepulveda Boulevard to Westbound Pico to Northbound Cotner Avenue to northbound I-405.
  • Night-time Route: Federal Avenue to Santa Monica Boulevard to Northbound on-ramp. Westwood Boulevard to Santa Monica Boulevard to Northbound on-ramp.

The project team will deploy traffic control officers to key locations in the morning and afternoon peak period, and traffic control strike teams will patrol and monitor the area. Portable message signs will be used to advise motorists of the closure in advance.
The project team will work with the Los Angeles Department of Transportation to optimize the timing of traffic signals to help facilitate the movement of vehicles through intersections. The project team also will modify ramp meters at nearby on-ramps to help motorists more easily access the northbound I-405.

There are currently 27 on- and off-ramps that required realignment throughout the 10-mile project area.  At the Wilshire Interchange, Metro’s contractor has completed rebuilding three ramps so far.
Following the 90-day closure of the eastbound Wilshire on-ramp, the contractor will not require any additional extended duration closures in order to complete remaining ramps.  Intermittent night-time closures will still be required until all work is complete.