US Bridges

Kuhio HWY over Wainiha River #3

FairPosted for load

Kauai County, Hawaii · 0.10MI Se/Wainiha RD · Structure no. 007005600500673

Built
1931
94 years old, rebuilt 2007
Condition
Fair
inspected March 2023
Type
Truss - Thru
Steel
Length
185 ft
3 main spans
Daily traffic
3,300
2017 count
Owner
State
State Highway Agency

About this bridge

Kuhio HWY over Wainiha River #3 is a steel truss - thru carrying Kuhio HWY over Wainiha River #3 in Kauai County, Hawaii. It was built in 1931 and reconstructed in 2007, so it is 94 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 3,300 vehicles a day, roughly 1% of them trucks, projected to reach 6,279 by 2025. The structure is 185 ft (56.4 m) long and 21 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesKuhio HWY
CrossesWainiha River #3
Location0.10MI Se/Wainiha RD
RouteU.S. Route 560
CountyKauai County
StateHawaii
Coordinates22.21301, -159.54368
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment2: Basically intolerable, requiring high priority of replacement
Operating rating27.4 US tons
Inventory rating21.4 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckOther
Main spans3
Design loadHS 20
Structure length185 ft (56.4 m)
Longest span81 ft (24.7 m)
Deck width21 ft (6.5 m)
Roadway width14 ft (4.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,300 (2017)
Projected traffic6,279 by 2025
Trucks1%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$5.7 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Kuhio HWY over Wainiha River #3 built?

It was built in 1931, making it 94 years old in 2025. It was reconstructed in 2007.

What condition is Kuhio HWY over Wainiha River #3 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 March 2023.

How much traffic does Kuhio HWY over Wainiha River #3 carry?

About 3,300 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is Kuhio HWY over Wainiha River #3?

The structure is 185 ft (56.4 m) long with a longest span of 81 ft (24.7 m) and a deck 21 ft wide.

Who owns Kuhio HWY over Wainiha River #3?

It is owned by the State Highway Agency.