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OCTA/Caltrans – Interstate 405 Road Improvement – California - Project Profile

OCTA/Caltrans – Interstate 405 Road Improvement – California - Project Profile


"OCTA/Caltrans – Interstate 405 Road Improvement – California - Project Profile" contains information on the scope of the project including project overview and location. The profile also details project ownership and funding, gives a full project description, as well as information on contracts, tendering and key project contacts.

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Orange County Transportation Authority (OCTA) in collaboration with the California Department of Transportation (Caltrans) is undertaking the Interstate 405 Road improvement project in California, the US.

The project involves the redevelopment of the I-405 between State Route 73 (SR-73) and Interstate 605 (I-605), which will improve the 25.7km road between the SR-73 freeway in Costa Mesa and I-605 near the Los Angeles County line. It will be developed in two phases.

The first phase includes the construction of one general-purpose (GP) lane on the San Diego Freeway (I-405) in each direction between Euclid Street and the San Gabriel River Freeway (I-605).

The second phase includes the construction of tolled express lanes by Caltrans.

It also includes the construction of carriageways, service roads, road separators and pedestrian ways and related infrastructure facilities, the installation of street lights, signaling systems, safety and security systems.

The project will be funded by the Regional Surface Transportation Program and Renewed Measure M (M2) Orange County’s half-cent sales tax for transportation improvements which was approved in 2006. I-405 road improvement project was included in M2.

OCTA and Caltrans have jointly undertaken the draft environmental impact report/environmental impact statement (EIR/EIS) studies.

In September 2009, OCTA held public consultations.

On May 18, 2012, OCTA released EIR/EIS with three alternatives for the improvement.

The first alternative includes an addition of a single GP lane in each direction on the I-405 from Euclid Street to the I-605 interchange.

The second alternative will add one GP lane in each direction on I-405 from Euclid Street to the I-605 interchange, and add a second GP lane in the northbound direction from Brookhurst Street to the State Route 22 (SR-22)/7th Street interchange and a second GP lane in the southbound direction from the Seal Beach Boulevard on-ramp to Brookhurst Street.

The third alternative will add one GP lane in each direction of the I-405 freeway from Euclid Street to the I-605 interchange, and addition of a tolled express lane in each direction of I-405 from the SR-73 to the SR-22 east.

A joint venture of Lochner, Moffatt & Nichol and Arup has been awarded engineering services contract for the project.

Iteris has been awarded design contract of US$5.5 million for the project.

On June 28, 2013, OCTA drafted a supplemental draft Environmental Impact Report (EIR)/Environmental Impact Statement (EIS).

On December 9, 2013, OCTA board recommended the first alternative for the project.

On July 24, 2014, OCTA and Caltrans finalized the third alternative for the proposed improvement.

On October 27, 2014, OCTA issued a Request For Qualifications (RFQ) requesting statements of qualifications (SOQs) from design-build contractors for the project.

In March 2015, the final EIR/ EIS report of the project completed.

On May 15, 2015, The Record of Decision (ROD) has been signed by the Caltrans District 12 Director and approves third alternative as the selected alternative, the alternative to move forward for design and construction.

On June 17, 2015, The Notice of Determination (NOD) was filed with the State Clearinghouse in compliance with Section 21108 and 21152 of the Public Resources Code. The NOD approves third alternative as the Selected alternative, the alternative to move forward for design and construction.

OCTA announced four shortlisted bidders allowed to participate in the final tender process. The shortlisted bidders were Orange County Corridor Constructors, Shimmick/Tutor-Perini joint venture, and Skanska-Flatiron joint venture and OC 405 Partners, a joint venture of OHL and Astaldi.

On March 28, 2016, RFP was issued to three shortlisted bidders; Skanska-Flatiron JV, Shimmick/Tutor-Perini, JV, and OC 405 Partners with an end date of August 31, 2016.

On May 23, 2016, the OCTA Board of Directors approved an initial toll policy for the 405 Express Lanes and a preliminary finance plan for the project.

OCTA staff has recommended awarding the design-build contract to OC 405 Partners, and the recommendation will be reviewed by the Regional Planning and Highways Committee (RP&H) on November 7, 2016, and by OCTA's Board of Directors on November 14, 2016.

On November 14, 2016, OC 405 Partners, a joint venture of OHL USA and Astaldi Construction secured US$1,200 million Design-build contract. The work includes design, construction, maintenance and operation of the 405 Express Lanes.

OCTA will secure US$1,100 million of the project’s cost will come from Measure M funds and the federal government will chip in US$45.6 million, while the state will kick in US$89.7 million. A low-interest loan for US$629 million is to be paid off by revenue from the express lanes tolls.

On January 26, 2017, Construction works commenced and are scheduled to complete by 2023.


The project involves improvement of a 25.7km road between 0.3km south of Bristol Street and 2.2km north of I-605 in Orange County, California, the US.

The US$1,900 million project includes the following:

1. Construction of carriage ways

2. Construction of service roads

3. Construction of road separators

4. Installation of street lights

5. Installation of signaling systems

6. Installation of safety and security systemsReasons To Buy

  • Gain insight into the project.
  • Monitor the latest project developments.
  • Identify key project contacts.

1.Key Statistics
2.Key Dates
4.Operating metrics
5.Tender Information
8.Latest update
10.Key Contacts
11.General News, Project News

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