Ainalako Rd over 4 Mile Creek
Hawaii County, Hawaii · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ainalako Rd over 4 Mile Creek in Hawaii County, Hawaii, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1972, making it 53 years old at the 2025 inventory.
- It carries about 4,120 vehicles a day (traffic count year 1987).
- Its listed owner is the county highway agency.
- It is one of 123 of the 231 inventoried bridges in Hawaii County rated fair (53.2%); 8 (3.5%) 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.
View this bridge on a map → (19.66018, -155.09141)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 5 | Fair condition |
Bridge details
| Structure | Steel culvert |
| Length | about 30 ft |
| Location | Tmk 2-4-005:056 |
| NBI structure number | 001240001100005 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Hawaii department of transportation.
Busiest bridges in Hawaii County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Hawaii Belt Rd over Panaewa Strm | 1950 | 35,200 | Fair |
| Keeau-pahoa Hwy over Waipahoehoe Strm | 1968 | 26,700 | Good |
| Route 11 over Unmd Glh | 1984 | 25,900 | Good |
| Route 11 over Unmd Glh | 1984 | 25,400 | Good |
| Hi Blt Rd Palani R over Unmd Glh Tpl Mtl Culvt | 1984 | 25,400 | Good |
| Route 11 over Unmd Glh | 1984 | 25,400 | Good |
All bridges nearby: Hawaii County, HI bridge conditions · every bridge in Hawaii County · Hawaii bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.