$50 million Kawaihae Harbor overhaul aims to ease Big Island traffic backups

The state wants to rework Kawaihae Harbor into a faster freight gate for the Big Island, starting with an 875-foot dedicated left-turn and storage lane on Kawaihae Road to separate harbor-bound trucks from through traffic on the Kohala Coast. The overhaul, now carrying a price tag of more than $50 million, is aimed at reducing the long backups that can stretch past a mile and snarl the road network serving South Kohala, Kailua-Kona and the island’s west side.

The draft environmental assessment says the project is meant to improve operating conditions and efficiencies inside the cargo terminal while easing congestion on Kawaihae Road, the two-lane roadway that serves as the harbor’s main access route. Beyond the new lane, the work would add 2.3 acres of cargo yard storage, replace aging pavement with reinforced concrete, upgrade light poles and fire suppression systems, widen the harbor gate, and move utilities, fencing and office or maintenance structures. Those changes are intended to make the harbor work more smoothly for the freight that keeps store shelves stocked and fuel moving across West Hawaii.

HDOT submitted the draft environmental assessment on April 14 for publication in The Environmental Notice, and the April 23 issue listed the Kawaihae Commercial Harbor Improvements project. The plan still faces a long line of reviews and permits, including Section 106 historic-preservation consultation, Section 7 Endangered Species Act review, state historic-preservation review, water-quality certification, NPDES permitting, an air-quality permit, a community-noise permit and Disability and Communication Access Board review. Design and bidding are scheduled for this summer, with a contract award targeted for early next year and construction tentatively set to begin in mid-2027.

The harbor has already drawn major outside money. In 2023, the U.S. Department of Transportation Maritime Administration awarded $23.46 million for Kawaihae Harbor improvements, covering 70% of the then-estimated $33.9 million cost. That earlier concept called for widening Kawaihae Road for a left-turn lane, paving 10 acres of the cargo yard with concrete, installing 80-foot mast lighting, adding electrical infrastructure for refrigerated containers, and relocating the harbor office and maintenance shed. HDOT said then it hoped to advertise the project in 2025.

The stakes go beyond traffic relief. State and federal materials describe Hawaii’s commercial harbor system as a self-funded statewide network, and the U.S. Army Corps of Engineers says the Kawaihae Deep Draft Harbor project was authorized under the River and Harbor Acts of 1950 and 1965. If the Port of Hilo were ever knocked offline by a disaster or other disruption, Kawaihae would have to carry all ocean freight for the island, including food and fuel that account for more than 90% and 95% of local consumption, respectively. For a harbor built to move cargo, the overhaul is now being framed as both an economic fix and a resilience project for the Big Island.