US Bridges

Kal HWY over Kawaiakaiea Strm

Fair

Honolulu County, Hawaii · 0.41MI Sw/Blow Hole · Structure no. 003074001400256

Built
1931
94 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete Continuous
Length
100 ft
4 main spans
Daily traffic
8,900
2017 count
Owner
State
State Highway Agency

About this bridge

Kal HWY over Kawaiakaiea Strm is a concrete continuous tee beam carrying Kal HWY over Kawaiakaiea Strm in Honolulu County, Hawaii. It was built in 1931, 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.

It carries about 8,900 vehicles a day, roughly 4% of them trucks, projected to reach 9,440 by 2025. The structure is 100 ft (30.5 m) long and 32 ft wide. If it were closed, the detour would be 19.3 mi (31 km).

Location

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CarriesKal HWY
CrossesKawaiakaiea Strm
Location0.41MI Sw/Blow Hole
RouteU.S. Route 72
CountyHonolulu County
StateHawaii
Coordinates21.27907, -157.68206
Functional classUrban Other Principal Arterial

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 protection7 GoodSome minor problems.
Last inspectionSeptember 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating29.3 US tons
Inventory rating22.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadH 15
Structure length100 ft (30.5 m)
Longest span40 ft (12.2 m)
Deck width32 ft (9.7 m)
Roadway width27 ft (8.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,900 (2017)
Projected traffic9,440 by 2025
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.3 mi (31 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

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$1.3 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Kal HWY over Kawaiakaiea Strm built?

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

What condition is Kal HWY over Kawaiakaiea 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 September 2024.

How much traffic does Kal HWY over Kawaiakaiea Strm carry?

About 8,900 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Kal HWY over Kawaiakaiea Strm?

The structure is 100 ft (30.5 m) long with a longest span of 40 ft (12.2 m) and a deck 32 ft wide.

Who owns Kal HWY over Kawaiakaiea Strm?

It is owned by the State Highway Agency.