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Kaumualii Hwy over Unknown Stream

Kauai County, Hawaii · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

Kaumualii Hwy over Unknown Stream in Kauai County, Hawaii, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 2000, making it 25 years old at the 2025 inventory.
It carries about 34,000 vehicles a day (traffic count year 2017).
Its listed owner is the state highway agency.
It is one of 56 of the 85 inventoried bridges in Kauai County rated fair (65.9%); 6 (7.1%) are rated poor.
A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

Component ratings

Component	Rating (2025)	FHWA scale meaning
Culvert	6	Satisfactory condition

Source: FHWA National Bridge Inventory, 2025 data as reported by the Hawaii department of transportation.

Bridge	Built	Vehicles/day	Condition
Kaumualii Hwy over Nawiliwili Str/lihue M	1936	34,100	Fair
Kaumualii Highway over Nawiliwili Stream OB	2014	34,100	Good
Kuhio Hwy over Wailua River	1945	31,600	Poor
Kuhio Hwy/plan.rd. over Wailua River	1920	31,600	Fair
Kuhio Hwy over Uhelekawawa Canal	1963	29,200	Fair
Kuhio Hwy over Waikaea Canal	1948	29,200	Fair