What’s with the 405 Freeway construction in Irvine?

Caltrans is making the following improvements to the 405 Freeway between Jamboree Road and Sand Canyon Avenue:

  • Adding one new lane to the southbound 405 from approximately Culver Drive to University Drive. This will require minor reconstruction of the Culver Drive off-ramp, loop on-ramp, direct on-ramp and retaining wall under the bridge.
  • Landscaping and irrigation at the Culver Drive interchange.
  • Paving the 405 Freeway median from approximately Sand Canyon Avenue to the Yale overpass and adding a permanent concrete barrier there.