US Bridges

Kupulau RD over Waiakea Strm

Fair

Hawaii County, Hawaii · Tmk 2-4-065:063 · Structure no. 001240001100003

Built
1967
58 years old, rebuilt 1969
Condition
Fair
inspected November 2023
Type
Slab
Concrete
Length
31 ft
1 main span
Daily traffic
3,000
1986 count
Owner
County
County Highway Agency

About this bridge

Kupulau RD over Waiakea Strm is a concrete slab carrying Kupulau RD over Waiakea Strm in Hawaii County, Hawaii. It was built in 1967 and reconstructed in 1969, so it is 58 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 3,000 vehicles a day, projected to reach 3,750 by 2025. The structure is 31 ft (9.6 m) long and 32 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesKupulau RD
CrossesWaiakea Strm
LocationTmk 2-4-065:063
CountyHawaii County
StateHawaii
Coordinates19.67545, -155.10609
Functional classUrban Local

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.3 US tons
Inventory rating37.8 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length31 ft (9.6 m)
Longest span31 ft (9.4 m)
Deck width32 ft (9.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,000 (1986)
Projected traffic3,750 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
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$119,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Kupulau RD over Waiakea Strm built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1969.

What condition is Kupulau RD over Waiakea 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 November 2023.

How much traffic does Kupulau RD over Waiakea Strm carry?

About 3,000 vehicles per day (1986 count).

How long is Kupulau RD over Waiakea Strm?

The structure is 31 ft (9.6 m) long with a longest span of 31 ft (9.4 m) and a deck 32 ft wide.

Who owns Kupulau RD over Waiakea Strm?

It is owned by the County Highway Agency.