Queen Kaahumanu Highway Master Plan Update and Phase I Environmental Assessment

Location: Hawaii, Hawaii
Client Name: State of Hawaii, Department of Transportation, Highways Division
Date Completed: 1995
Construction Cost: $725,000
Disciplines Applied: Planning & PermittingCivil Engineering

Project Description:

RMTC developed a Master Plan Update for the entire Queen Kaahumanu Highway and an Environmental Assessment (EA) for Phase 1. The purpose of the master plan was to upgrade Queen Kaahumanu Highway to freeway status, a task requiring investigations, studies, peripheral planning, conceptual design analysis, and preliminary engineering services. Planning and design criteria were established after completion of extensive public coordination, review of existing data, base mapping and traffic forecasting.

RMTC engineers conceptually designed a Phase 1 widening project from Palani Road to Keahole Airport to interface with the future freeway upgrade. Major tasks relevant to the Master Plan and EA included (1) design of an FHWA highway; (2) incorporation of archaeological concerns; (3) detailed onsite and offsite drainage calculations; (4) erosion control plan; and (5) coordination with multiple landowners and approving agencies. [In the 1970s RMTC provided surveying and a Drainage Master Plan for the entire new Queen Kaahumanu Highway and designed a portion of the 35-mile, two-lane highway that was completed in 1977 at a cost of $12,000,000.]