The I-405 Improvement Project has been awarded Project of the Year by the southern California chapter of the Construction Management Association of America (CMAA), North America's only organization dedicated exclusively to the interests of professional construction project management.
The $2.16 billion, design-build project added one regular lane in each direction of the I-405 between Euclid Street in Fountain Valley and I-605 in Seal Beach and constructed the 405 Express Lanes by combining the existing HOV lane with a new lane in both directions between SR-73 in Costa Mesa and I-605 at the Orange County border with Los Angeles County.