The Keaau-Pahoa Road Improvements project improves safety and traffic capacity between the Keaau Bypass Road and Shower Drive, a distance of approximately 2 miles.

The project converted the shoulder into a permanent travel lane. The increased roadway width also required the widening of Waipahoehoe Stream Bridge. Drainage improvements along the widened highway included lengthening and repair/replacement of existing culverts, and the installation of a new multiple pipe culvert across the highway to alleviate flooding conditions.

The installation of a new traffic signal at the Shower Drive intersection in Phase 2 improves traffic flow and alleviates traffic back logs along side streets.

WOC also prepared and processed a State and NEPA Environmental Assessment, including addressing Section 106 consultation under the National Historic Preservation Act and Section 7 of the Endangered Species Act.

Disciplines Provided: Planning, Civil and Traffic Engineering