Bridge conditions in Kauai County, Hawaii
85 inventoried bridges · 6 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
The federal inventory lists 85 bridges in Kauai County: 23 rated good, 56 fair, and 6 poor.
- 6 of the 85 bridges in Kauai County, Hawaii, are rated in poor condition (7.1%) in the 2025 National Bridge Inventory, as of .
- 23 bridges (27.1%) are rated good and 56 (65.9%) fair.
- The median Kauai County bridge was built in 1957.
- The busiest poor-rated bridge is Kuhio Hwy over Wailua River (built 1945), carrying about 31,600 vehicles a day.
Good 27.1% · Fair 65.9% · Poor 7.1% of 85 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Kuhio Hwy over Wailua River | 1945 | 31,600 | Poor |
| Kuhio Hwy over Kalihiwai River | 1963 | 15,500 | Poor |
| Koloa Rd over Waikomo Stream | 1928 | 12,108 | Poor |
| Lawai Road over Kukuiula Bay | 1993 | 500 | Poor |
| Kipu Rd over Huleia Strm(kipu Br) | 1914 | 200 | Poor |
| Koolau Rd over Waipake Strm(kiaki Br) | 1921 | 90 | Poor |
Busiest bridges in the county
| 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 |
| Kaumualii Hwy over Unknown Stream | 2000 | 34,000 | Fair |
| 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 |
| Kaumualii Hwy over Weoweopilau Strm | 1937 | 28,400 | Fair |
| Kaumualii Hwy over Hoinakaunalehua Strm | 1937 | 28,400 | Fair |
| Kaumualii Hwy over Huleia Strm | 1989 | 26,700 | Good |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Hawaii: Hawaii bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.