US Bridges

Ahilama RD over Waihee Strm

Good

Honolulu County, Hawaii · Mwy Bet Waihee&mapele RD · Structure no. 003495001200001

Built
1965
60 years old, rebuilt 1988
Condition
Good
inspected November 2023
Type
Culvert
Concrete
Length
22 ft
1 main span
Daily traffic
240
1984 count
Owner
County
County Highway Agency

About this bridge

Ahilama RD over Waihee Strm is a concrete culvert carrying Ahilama RD over Waihee Strm in Honolulu County, Hawaii. It was built in 1965 and reconstructed in 1988, so it is 60 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 240 vehicles a day, projected to reach 300 by 2025. The structure is 22 ft (6.8 m) long and 32 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesAhilama RD
CrossesWaihee Strm
LocationMwy Bet Waihee&mapele RD
RouteCity Street 0
StateHawaii
Coordinates21.45509, -157.84527
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating73.5 US tons
Inventory rating56.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length22 ft (6.8 m)
Longest span20 ft (6.1 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic240 (1984)
Projected traffic300 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$460,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Ahilama RD over Waihee Strm built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1988.

What condition is Ahilama RD over Waihee Strm 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 November 2023.

How much traffic does Ahilama RD over Waihee Strm carry?

About 240 vehicles per day (1984 count).

How long is Ahilama RD over Waihee Strm?

The structure is 22 ft (6.8 m) long with a longest span of 20 ft (6.1 m) and a deck 32 ft wide.

Who owns Ahilama RD over Waihee Strm?

It is owned by the County Highway Agency.