US Bridges

Ahilama Rd. over Ahilama Rd/N Waihee Strm

GoodPosted for load

Honolulu County, Hawaii · TMK=4-7-33 · Structure no. 003403001100001

Built
1977
48 years old
Condition
Good
inspected January 2025
Type
Culvert
Concrete
Length
30 ft
1 main span
Daily traffic
825
1986 count
Owner
County
County Highway Agency

About this bridge

Ahilama Rd. over Ahilama Rd/N Waihee Strm is a concrete culvert carrying Ahilama Rd. over Ahilama Rd/N Waihee Strm in Honolulu County, Hawaii. It was built in 1977, so it is 48 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. Its operating status is: posted for load restriction.

It carries about 825 vehicles a day, projected to reach 1,031 by 2025. The structure is 30 ft (9.1 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesAhilama Rd.
CrossesAhilama Rd/N Waihee Strm
LocationTMK=4-7-33
RouteCity Street 0
CountyHonolulu County
StateHawaii
Coordinates21.45958, -157.84747
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span30 ft (9.1 m)
Deck width30 ft (9.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic825 (1986)
Projected traffic1,031 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Ahilama Rd. over Ahilama Rd/N Waihee Strm built?

It was built in 1977, making it 48 years old in 2025.

What condition is Ahilama Rd. over Ahilama Rd/N 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 January 2025.

How much traffic does Ahilama Rd. over Ahilama Rd/N Waihee Strm carry?

About 825 vehicles per day (1986 count).

How long is Ahilama Rd. over Ahilama Rd/N Waihee Strm?

The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 30 ft wide.

Who owns Ahilama Rd. over Ahilama Rd/N Waihee Strm?

It is owned by the County Highway Agency.