Mamalahoa Hwy over Kamakoa Strm #2
Hawaii County, Hawaii · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Mamalahoa Hwy over Kamakoa Strm #2 in Hawaii County, Hawaii, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1930 and reconstructed in 1980, making it 95 years old at the 2025 inventory.
- It carries about 5,900 vehicles a day (traffic count year 2017).
- Its listed owner is the state highway agency.
- It is one of 100 of the 231 inventoried bridges in Hawaii County rated good (43.3%); 8 (3.5%) are rated poor.
- 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 → (19.91847, -155.69669)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Steel culvert |
| Length | about 36 ft |
| Location | 1.35MI S/saddle Rd Junct |
| NBI structure number | 001001900503111 |
| Condition class | Good |
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.