West Maui Community Planning Advisory Committee Meeting September - - PowerPoint PPT Presentation

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West Maui Community Planning Advisory Committee Meeting September 5, 2019

Highways Division

Car Rental Surcharge

• Rental motor vehicle surcharge increased to $5.
• Estimated to generate $10.5M annually for Maui

County.

• Estimate we will be able to receive $18M to $19 per

million when we use that funding as pledged revenue bonds. This will generate about $190M on a 20 year loan.

• Priority Projects are:
• Lahaina Bypass Phase 1C - $70M
• Puunene Avenue Widening – $25 to $35M
• Paia Bypass - $70M to $120M

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Lahaina Bypass Phases

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Lahaina Bypass Supplemental EIS Alignment

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Lahaina Bypass Supplemental EIS Alignment

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Climate Change and Hawaii Roads

• Assumptions for Coastal Roads and Sea Level

Rise

• Hawaii will have to contend with the impacts of

climate change on our coastal roads

• The Hawaii Climate Change and Adaption

Commission forecasts 3.2 feet/1 m sea level rise by 2100

• 10-15% of the state’s highway system would be

affected

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State Highway Shoreline Protection Study

• Updated the 2003 study with new methodology. Report is

being finalized and will be available soon.

• Methodology
• Sites are evaluated using the Coastal Road Erosion

Susceptibility Index (CRESI).

• CRESI uses 11 different variables (Beach

Geomorphology, Coast Geomorphology, Erodible Volume, Slope, Coast ground cover & structures, Road base/subgrade, Armoring, Relative sea level change rate, Shoreline accretion/erosion rate, Mean tidal change, and Significant wave height.

• Expected traffic impacts (of the use of the roadway

being effected by coastal erosion) and surrounding land use is also considered.

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State Highway Shoreline Protection Study

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State Highway Shoreline Protection Study

Highways Division

State Highway Shoreline Protection Study

• Priority sites for Maui County are:
• #4 – Honoapiilani Highway @ M.P. 14.3 to M.P. 14.5
• #6 – Kamehameha V Highway @ M.P. 14.7
• #7 – Kamehameha V Highway @ M.P. 16.3
• #11 – Honoapiilani Highway @ M.P. 11.6
• #12 – Honoapiilani Highway @ M.P. 12.1 to M.P. 13.7
• A feasibility study to collect archaeological

information, topography and alignment options will be done to address Priority #4 in the near term.

• A Planning and Environmental Linkage Study will be

done to address M.P. 10.0 to M.P. 18.5 to address the entire corridor.

Highways Division

State Highway Shoreline Protection Study

Questions?