Kaumualii Highway over Hanapepe River
Kauai County, Hawaii · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Kaumualii Highway over Hanapepe River in Kauai County, Hawaii, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2021, making it 4 years old at the 2025 inventory.
- It carries about 18,600 vehicles a day (traffic count year 2017).
- Its listed owner is the state highway agency.
- It is one of 23 of the 85 inventoried bridges in Kauai County rated good (27.1%); 6 (7.1%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (good), but component ratings moved: deck 9 to 8, substructure 9 to 8.
- Its most recent inspection on record is dated December 2023, on a 24-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (21.90889, -159.59111)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 9 | 8 | Very good condition |
| Superstructure | 9 | 9 | Excellent condition |
| Substructure | 9 | 8 | Very good condition |
Bridge details
| Structure | Continuous prestressed concrete stringer or multi-beam girder |
| Length | about 315 ft |
| Location | 0.07 MI SE/Hanapepe V Rd |
| NBI structure number | 007000500301632 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | December 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | U: unknown foundation, not evaluated for scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Hawaii department of transportation.
Busiest bridges in Kauai 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 |
All bridges nearby: Kauai County, HI bridge conditions · every bridge in Kauai County · Hawaii bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.