1-405 Improvements Coming

Which Alternative Do You Prefer?

The 405 is one of the most congested freeways in Orange County, carrying more than 300,000 vehicle trips in some sections each day. With expected population growth of 11% by 2040, traffic volumes on the 405 are expected to increase significantly over time. OCTA, in cooperation with Caltrans, is proposing to widen the 405 between the 73 and the 605 in order to increase freeway capacity, improve traffic and interchange operations, and enhance road safety to meet state and federal standards. There are three Build Alternatives being considered:

  1. Meet the minimum as proposed in Measure M, adding one general purpose lane in each direction. There would be some additional interchange improvements within the project limits as well.
  2. Meet the minimum as proposed by Measure M and also add an additional general purpose lane in each direction.
  3. Go beyond the minimum promise from Measure M (adding one general purpose lane in each direction), by also adding a toll lane to the existing carpool lane and provide additional interchange improvements within the project limits as well.

It is important to note that all of the alternatives limit “right-of-way” impacts, include sound wall improvements, and none require residential acquisitions.  As improvements to the 405 will likely need to carry Orange County population growth for the next 40 years, it makes sense to get the most improvements (moving the most vehicles through the system) for the best use of funds, while also adding the most flexibility to the roadway facility.

The I-405 Improvement Project environmental phase must be completed before the project moves forward into design, right-of-way acquisition and construction. Construction is approximately three to six years away, depending on funding availability and project delivery method. The project draft environmental impact statement / draft environmental impact report was released May 18 and is available for public review and comment through July 2 by clicking here:  Caltrans website. The remaining public hearings are scheduled from 6:00 p.m. to 8:00 p.m.:

  • Wednesday, June 6 – Westminster Community Services Facility, 8200 Westminster Ave., Westminster
  • Thursday, June 7 – Rush Park Auditorium, 3021 Blume Drive, Rossmoor
  • Thursday, June 14 – Fountain Valley Senior Center, 17967 Bushard St., Fountain Valley

For more information contact Kate Klimow, Vice President of Government and Community Affairs.

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