PROJECT SPOTLIGHT


Massive I-405 Project Moves Forward


Photo courtesy Orange County Transportation Authority By Carol Eaton T


he largest highway project currently under construction in California and one of the largest


of its kind in state history – the $1.9 billion, 16-mile I-405 Improvement Project – is making steady progress more than a year after construction began.


Te project is underway by OC 405


Partners, a design-build joint venture team comprising OHL USA and Astaldi Construction Corp. Design efforts are led by Pacific Infrastructure 405 Designers, a joint venture of Moffatt & Nichol (MN) with H.W. Lochner, Inc. (Lochner) and Arup North America Ltd. (Arup).


www.AGC-CA.org


Major Scope, 15 Years in Planning


In the planning stages for some 15


years before breaking ground in March of 2018, the I-405 Improvement Project is slated for completion in 2023. It promises to shorten the commute time for 370,000 Southern Californian drivers who traverse the heavily traveled freeway each day. Te project will add one general-purpose lane in each direction of the I-405 between Costa Mesa and I-605, as well as a second tolled express lane in each direction from SR-73 to SR-22. Te 405 Express Lanes, which incor- porates the existing carpool lanes and the new tolled lanes, allow solo drivers the choice to speed up their commute for a toll.


Also included in the project’s


overall scope: ■ Reconfiguration of interchanges


and ramps consisting of 23 new or replacement crossroad/ramp bridges, one pedestrian bridge, and seven bridge widenings on I-405.


■ Addition of auxiliary lanes in the NB direction at Euclid St off-ramp and from Seal Beach Blvd on-ramp to the WB SR-22/7th Street off-ramp.


■ Extension of existing SB auxiliary lane from Harbor Blvd off-ramp to Euclid St on-ramp.


■ Removal of SB auxiliary lane from Beach Blvd to Magnolia St off-ramp.


■ New, modified or replaced struc- Continued on page 14


Associated General Contractors of California 13


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