The I-405 Improvement Project, designed and constructed by an OHLA-led joint venture, has been honored with several prestigious awards
July 11, 2024
The I-405 Improvement Project, one of the most important infrastructure contracts in the western United States, has received important civic and industry accolades.
OHLA USA was the lead and managing partner of OC 405 Partners responsible for performing the contract to design and construct the I-405 Improvement Project. The effort has added one new general-purpose lane in each direction and a second lane in each direction that combined with the existing carpool lanes to create the 405 Express Lanes along the corridor between State Route 73 and Interstate 605.
Key elements of the design-build project, which stretches from Costa Mesa to the Los Angeles County line, include a total of 18 bridges that were demolished and reconstructed, many with new sidewalks and added bike lanes. The project team added ramps, upgraded drainage, and relocated utilities, in addition to constructing and installing hundreds of retaining and soundproofing walls.
Prestigious awards
The I-405 Improvement Project recently won the California Chapter of the Construction Management Association of America Award and the Golden Hub of Innovation Award from the Association of California Cities of Orange County. Last month, the American Society of Civil Engineers – Orange County chapter – honored OCTA and Caltrans with a Project of the Year Award for improving commutes on I-405.
These awards are in addition to several other recognitions from engineering and transportation associations. Congratulations to the entire I-405 project team, including our partners and clients, Orange County Transportation Authority and Caltrans, on these well-deserved awards