Piilani HWY over Waiakoa Gulch
FairMaui County, Hawaii · 0.14MI Se/N Kihei RD · Structure no. 009000310300413
- Built
- 1980
- 45 years old
- Condition
- Fair
- inspected February 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 154 ft
- 3 main spans
- Daily traffic
- 42,400
- 2017 count
- Owner
- State
- State Highway Agency
About this bridge
Piilani HWY over Waiakoa Gulch is a prestressed concrete continuous stringer/multi-beam or girder carrying Piilani HWY over Waiakoa Gulch in Maui County, Hawaii. It was built in 1980, so it is 45 years old, younger 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 5 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 42,400 vehicles a day, roughly 2% of them trucks, projected to reach 32,315 by 2025. The structure is 154 ft (46.9 m) long and 51 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Piilani HWY over Waiakoa Gulch built?
It was built in 1980, making it 45 years old in 2025.
What condition is Piilani HWY over Waiakoa Gulch 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 February 2025.
How much traffic does Piilani HWY over Waiakoa Gulch carry?
About 42,400 vehicles per day (2017 count), of which roughly 2% are trucks.
How long is Piilani HWY over Waiakoa Gulch?
The structure is 154 ft (46.9 m) long with a longest span of 50 ft (15.3 m) and a deck 51 ft wide.
Who owns Piilani HWY over Waiakoa Gulch?
It is owned by the State Highway Agency.