Old Mamalahoa HWY over Waiaama Strm
FairHawaii County, Hawaii · Tmk: 2-7-011:004 · Structure no. 001270001100008
- Built
- 1930
- 95 years old
- Condition
- Fair
- inspected June 2024
- Type
- Arch - Deck
- Concrete
- Length
- 72 ft
- 1 main span
- Daily traffic
- 390
- 1986 count
- Owner
- County
- County Highway Agency
About this bridge
Old Mamalahoa HWY over Waiaama Strm is a concrete arch - deck carrying Old Mamalahoa HWY over Waiaama Strm in Hawaii County, Hawaii. It was built in 1930, so it is 95 years old, older than the Hawaii average of 63.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 390 vehicles a day, projected to reach 488 by 2025. The structure is 72 ft (21.9 m) long and 17 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old Mamalahoa HWY over Waiaama Strm built?
It was built in 1930, making it 95 years old in 2025.
What condition is Old Mamalahoa HWY over Waiaama Strm in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in June 2024.
How much traffic does Old Mamalahoa HWY over Waiaama Strm carry?
About 390 vehicles per day (1986 count).
How long is Old Mamalahoa HWY over Waiaama Strm?
The structure is 72 ft (21.9 m) long with a longest span of 39 ft (11.8 m) and a deck 17 ft wide.
Who owns Old Mamalahoa HWY over Waiaama Strm?
It is owned by the County Highway Agency.