The H-1 PM Contraflow Project increases the capacity of the H-1 Freeway for westbound commuters from Radford Drive Overpass to Waiawa (H-1/H-2 merge), a six-mile corridor, during afternoon peak traffic period.
The Design-Build team developed alternative improvements that reduced construction and operational costs and implemented with a shorter schedule and less disruption. Overall, the project added a full lane of capacity for afternoon traffic from Halawa to Waikele with the portion from Pearl City to Waikele available to drivers during all hours. The combination of innovative techniques and materials, including utilizing a precast concrete slab system, which was the first application of rapid concrete pavement replacement with precast pavement panels in Hawaii, helped the overall project timeline and reduced impacts to those affected by the project.
WOC provided project management and coordinated the work of various design sub-consultants on the project. The project included highway design elements that included off-ramps, drainage, utility relocation, signing and striping, construction phasing, traffic control, and various permits required for the project.
Services Provided: Civil Engineering, Transportation & Traffic Engineering
AWARDS
2017 Project of the Year, Transportation >$75 Million, American Public Works Association, Hawai‘i Chapter
2017 Engineering Excellence Grand Conceptor Award, American Council of Engineering Companies of Hawai‘i
2016 Best Transportation Project, American Society of Civil Engineers, Hawai‘i Section
