US Bridges

Kahuna Rd. over Kapaa Stream/Akulikuli

Good

Kauai County, Hawaii · 0.92 Mi.E/Kawaihau RD · Structure no. 007460771146005

Built
1989
36 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
90 ft
1 main span
Daily traffic
200
2009 count
Owner
County
County Highway Agency

About this bridge

Kahuna Rd. over Kapaa Stream/Akulikuli is a prestressed concrete stringer/multi-beam or girder carrying Kahuna Rd. over Kapaa Stream/Akulikuli in Kauai County, Hawaii. It was built in 1989, so it is 36 years old, younger than the Hawaii average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 200 vehicles a day, projected to reach 500 by 2020. The structure is 90 ft (27.3 m) long and 29 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesKahuna Rd.
CrossesKapaa Stream/Akulikuli
Location0.92 Mi.E/Kawaihau RD
RouteCounty Highway 0
CountyKauai County
StateHawaii
Coordinates22.10381, -159.36344
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating34 US tons
Inventory rating26.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length90 ft (27.3 m)
Longest span85 ft (25.9 m)
Deck width29 ft (8.8 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (2009)
Projected traffic500 by 2020
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Kahuna Rd. over Kapaa Stream/Akulikuli built?

It was built in 1989, making it 36 years old in 2025.

What condition is Kahuna Rd. over Kapaa Stream/Akulikuli in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does Kahuna Rd. over Kapaa Stream/Akulikuli carry?

About 200 vehicles per day (2009 count).

How long is Kahuna Rd. over Kapaa Stream/Akulikuli?

The structure is 90 ft (27.3 m) long with a longest span of 85 ft (25.9 m) and a deck 29 ft wide.

Who owns Kahuna Rd. over Kapaa Stream/Akulikuli?

It is owned by the County Highway Agency.