Kaumualii HWY over Mahinauli Strm
FairKauai County, Hawaii · 0.27MI Se/Makaweli P.O. · Structure no. 007000500301258
- Built
- 1948
- 77 years old
- Condition
- Fair
- inspected January 2025
- Type
- Tee Beam
- Concrete Continuous
- Length
- 122 ft
- 4 main spans
- Daily traffic
- 11,800
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
Kaumualii HWY over Mahinauli Strm is a concrete continuous tee beam carrying Kaumualii HWY over Mahinauli Strm in Kauai County, Hawaii. It was built in 1948, so it is 77 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 11,800 vehicles a day, roughly 3% of them trucks, projected to reach 12,379 by 2025. The structure is 122 ft (37.2 m) long and 37 ft wide. If it were closed, the detour would be 1.2 mi (2 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 |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Kaumualii HWY over Mahinauli Strm built?
It was built in 1948, making it 77 years old in 2025.
What condition is Kaumualii HWY over Mahinauli 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 January 2025.
How much traffic does Kaumualii HWY over Mahinauli Strm carry?
About 11,800 vehicles per day (2019 count), of which roughly 3% are trucks.
How long is Kaumualii HWY over Mahinauli Strm?
The structure is 122 ft (37.2 m) long with a longest span of 37 ft (11.4 m) and a deck 37 ft wide.
Who owns Kaumualii HWY over Mahinauli Strm?
It is owned by the State Highway Agency.