Honoapiilani Highway Improvements

Project Updates

On Thursday, January 23, 2025 an in-person Public Hearing was held with a presentation on the Draft Environmental Impact Statement. A virtual Public Hearing with presentation was held on January 28, 2025. The meeting minutes, video presentation, and presentation materials are available to view.

View the Meeting Materials

The Draft Environmental Impact Statement (DEIS) for the Honoapi‘ilani Highway Improvements project was signed by Federal Highway Administration (FHWA) and Hawai‘i Department of Transportation (HDOT), and is now available for review. It was published in The Environmental Notice on January 8, 2025 and the Federal Register on January 10, 2025.

View the DEIS

Upcoming Events

DEIS Comment Period Now Closed
Closed February 24, 2025: Your comments are now being incorporated into the Final Environmental Impact Statement.

Olowalu: The Road to Resilience
Please join UHCDC and The Nature Conservancy. Give feedback on a conceptual design first draft, based on prior community input and potential solutions addressing environmental threats and hazards.

In-person: Thursday, May 29
Virtual: Tuesday, June 3 & Thursday, June 5

Each meeting will cover the same content: brief project overview, summary of initial community engagement, participatory design, and talk story. More Information

Project Overview

The scenic coastal Honoapiʻilani Highway (State Route No. 30) is a single two-lane highway that currently serves as the primary access route to and from West Maui.

It is part of the island’s belt road system which operates as a two-lane principal arterial on the National Highway System (NHS) and Freight Network System (FNS).

The undivided highway provides two 12-foot travel lanes with 4-foot to 8-foot shoulders. Most of the highway terrain is relatively flat, lying close to mean sea level.

Learn More & View Documents

Project Goals

Project Purpose

The Primary Purpose of this project is to provide a reliable transportation facility in West Maui and improve Honoapiʻilani Highway’s resilience by reducing the highway’s vulnerability to coastal hazards.

Objectives:

Provide Regional Transportation System Linkages that Support the Safe Movement of People and Goods
Conform with Regional Land Use and Transportation Plans

Picture of roadway with ocean and beach on the left

Project Need

As a coastal highway, Honoapiʻilani Highway is vulnerable to:

sea level rise
passive flooding
annual high wave flooding
coastal erosion

As delineated by the Hawaii Climate Change Mitigation and Adaptation Commission (HCCC)’s Sea Level Rise Exposure Area (SLR-XA).

Submit A Comment

Please use the form to submit a general question or to comment on the Environmental Process.

If you'd like to mail your comment, you're welcome to use this form.

Thank you for being a part of the process!

To request language interpretation, an auxiliary aid, or special services (e.g. sign language interpreter, materials in alternate format), please contact Mr. Ken Tatsuguchi: ken.tatsuguchi@hawaii.gov.
Please submit requests one week in advance of the meeting or event.

Timeline

January 2023
- Launch of environmental assessment process, which includes NOI and EISPN.
- Start of Environmental Planning Process (Continues through 2025)
Winter 2024 - 2025
- Draft Environmental Impact Statement Published (January 2025)
- Public Hearing (January / February 2025)
- 45 Day Comment Process (January - February 2025)
Summer 2025
- Final Environmental Impact Statement Published
Fall 2025
- Preconstruction
2027
- Construction Begins