The $1.9 billion I- 405 Improvement Project will add one regular lane in each direction between Euclid Street and I-605, and a second lane in each direction in the center of the freeway from SR- 73 to I-605 that will combine with the existing carpool lanes to form the 405 Express Lanes.

SR- 73) and Interstate 605 (I-605). The project will improve 16 miles of I- 405 and includes adding one regular lane in each direction from Euclid Street to I-605 and making improvements to fr

Construction Updates OCTA, in cooperation with Caltrans, is constructing the I-5 Freeway Improvement Project between State Route 73 (SR- 73) and El Toro Road. The project will improve 6.5 miles of I-5 through the cities of Mission Viejo, Lake Forest, Laguna Hills, and Laguna Niguel.

Drivers can enter or exit the facility from I- 405, SR- 73, SR-22 and I-605. In addition, drivers on I- 405 can enter or exit the 405 Express Lanes at Magnolia Street / Warner Avenue, and Bolsa Avenue / Goldenwest Street, providing opportunities to reach every interchange and business along the corridor.

405 Express Lanes General Information & Frequently Asked Questions The questions and answers below provide current information on the project to improve Interstate 405 (I- 405) in Orange County from State Route 73 to Interstate 605.

In addition, the project created the 405 Express Lanes between SR- 73 and I-605. Operated by OCTA, the 405 Express Lanes gives options to carpoolers to travel for free and solo drivers the choice to speed up their commute for a toll. All regular lanes and the 405 Express Lanes are expected to be open for the Friday morning commute.

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 ...

One year after the completion of the I- 405 Improvement Project, drivers are experiencing easier and quicker commutes along one of the most heavily traveled stretches of highway in the nation. The project opened to traffic on Dec. 1, 2023, bringing transformative improvements to a 16-mile stretch of I- 405 between Costa Mesa and the Los Angeles County line. The $2.1 billion investment was ...

The 405 Express Lanes, and all other improvements being made as part of the project, are scheduled to open in late 2023. The 405 Express Lanes – between SR- 73 in Costa Mesa and I-605 at the Orange County Line – will give options to carpoolers to travel for free and solo drivers the choice to speed up their commute for a toll.

The Depot at Santa Ana to Orange County Fairgrounds via 5 Fwy / 55 Fwy