US Bridges

Kuhio HWY over Wailua River

Poor

Kauai County, Hawaii · 0.16MI Ne/Leho DR · Structure no. 007000560400572

Built
1945
80 years old, rebuilt 1949
Condition
Poor
inspected May 2023
Type
Tee Beam
Concrete Continuous
Length
425 ft
8 main spans
Daily traffic
31,600
2017 count
Owner
State
State Highway Agency

About this bridge

Kuhio HWY over Wailua River is a concrete continuous tee beam carrying Kuhio HWY over Wailua River in Kauai County, Hawaii. It was built in 1945 and reconstructed in 1949, so it is 80 years old, older than the Hawaii average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 31,600 vehicles a day, roughly 3% of them trucks, projected to reach 34,005 by 2025. The structure is 425 ft (129.5 m) long and 37 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesKuhio HWY
CrossesWailua River
Location0.16MI Ne/Leho DR
RouteU.S. Route 56
StateHawaii
Coordinates22.04536, -159.3366
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating22.8 US tons
Inventory rating17.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans8
Design loadH 20
Structure length425 ft (129.5 m)
Longest span60 ft (18.3 m)
Deck width37 ft (11.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,600 (2017)
Projected traffic34,005 by 2025
Trucks3%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$6.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Kuhio HWY over Wailua River built?

It was built in 1945, making it 80 years old in 2025. It was reconstructed in 1949.

What condition is Kuhio HWY over Wailua River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.

How much traffic does Kuhio HWY over Wailua River carry?

About 31,600 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is Kuhio HWY over Wailua River?

The structure is 425 ft (129.5 m) long with a longest span of 60 ft (18.3 m) and a deck 37 ft wide.

Who owns Kuhio HWY over Wailua River?

It is owned by the State Highway Agency.