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Aug 22405 Expansion Facts
Aug 22405 Freeway Expansion Bridge Construction Map
Click Here for Bridge Construction Map
Apr 17405 Expansion: 4/17/2017
405 Freeway Expansion Project Overview ​http://www.octa.net/405improvement OCTA in cooperation with The California Department of Transportation (Caltrans) is widening the San Diego Freeway (I-405) between State Route 73 (SR-73) and Interstate 605 (I-605).The project will improve 16 miles of I-405 between the SR-73 freeway in Costa Mesa and I-605 near the L.A. County line. The project includes adding one regular lane in each direction from Euclid Street to I-605 and making improvements to freeway
