US Bridges

Ainapo St. over Ainapo Br/Hahaione Chl

Fair

Honolulu County, Hawaii · TMK=3-9-49 · Structure no. 003394001200001

Built
1972
53 years old
Condition
Fair
inspected January 2025
Type
Slab
Prestressed Concrete
Length
31 ft
1 main span
Daily traffic
747
1990 count
Owner
County
County Highway Agency

About this bridge

Ainapo St. over Ainapo Br/Hahaione Chl is a prestressed concrete slab carrying Ainapo St. over Ainapo Br/Hahaione Chl in Honolulu County, Hawaii. It was built in 1972, so it is 53 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 6 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 747 vehicles a day, projected to reach 934 by 2025. The structure is 31 ft (9.6 m) long and 56 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesAinapo St.
CrossesAinapo Br/Hahaione Chl
LocationTMK=3-9-49
RouteCity Street 7946
CountyHonolulu County
StateHawaii
Coordinates21.30496, -157.70966
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating89.9 US tons
Inventory rating69.7 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20 + Mod
Structure length31 ft (9.6 m)
Longest span30 ft (9.1 m)
Deck width56 ft (17 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic747 (1990)
Projected traffic934 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 Ainapo St. over Ainapo Br/Hahaione Chl built?

It was built in 1972, making it 53 years old in 2025.

What condition is Ainapo St. over Ainapo Br/Hahaione Chl 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 January 2025.

How much traffic does Ainapo St. over Ainapo Br/Hahaione Chl carry?

About 747 vehicles per day (1990 count).

How long is Ainapo St. over Ainapo Br/Hahaione Chl?

The structure is 31 ft (9.6 m) long with a longest span of 30 ft (9.1 m) and a deck 56 ft wide.

Who owns Ainapo St. over Ainapo Br/Hahaione Chl?

It is owned by the County Highway Agency.