US Bridges

Kahekili HWY over Ahuimanu Strm

Fair

Honolulu County, Hawaii · 45KAILUA of Hui Iwa ST · Structure no. 003000830303803

Built
1963
62 years old
Condition
Fair
inspected June 2024
Type
Culvert
Concrete
Length
38 ft
2 main spans
Daily traffic
23,200
2017 count
Owner
State
State Highway Agency

About this bridge

Kahekili HWY over Ahuimanu Strm is a concrete culvert carrying Kahekili HWY over Ahuimanu Strm in Honolulu County, Hawaii. It was built in 1963, so it is 62 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 23,200 vehicles a day, roughly 3% of them trucks, projected to reach 33,090 by 2025. The structure is 38 ft (11.6 m) long and 49 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesKahekili HWY
CrossesAhuimanu Strm
Location45KAILUA of Hui Iwa ST
RouteU.S. Route 83
CountyHonolulu County
StateHawaii
Coordinates21.43738, -157.82947
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
Channel and channel protection7 GoodSome minor problems.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 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 geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment9: Superior to present desirable criteria
Operating rating41.1 US tons
Inventory rating31.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length38 ft (11.6 m)
Longest span25 ft (7.6 m)
Deck width49 ft (15 m)
Roadway width46 ft (14 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic23,200 (2017)
Projected traffic33,090 by 2025
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Kahekili HWY over Ahuimanu Strm built?

It was built in 1963, making it 62 years old in 2025.

What condition is Kahekili HWY over Ahuimanu 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 June 2024.

How much traffic does Kahekili HWY over Ahuimanu Strm carry?

About 23,200 vehicles per day (2017 count), of which roughly 3% are trucks.

How long is Kahekili HWY over Ahuimanu Strm?

The structure is 38 ft (11.6 m) long with a longest span of 25 ft (7.6 m) and a deck 49 ft wide.

Who owns Kahekili HWY over Ahuimanu Strm?

It is owned by the State Highway Agency.