US Bridges

Oneawa ST over Kawainui Canal

Fair

Honolulu County, Hawaii · 170E/KAINUI/ONEAWA ST · Structure no. 003083761400001

Built
1967
58 years old
Condition
Fair
inspected September 2023
Type
Tee Beam
Prestressed Concrete Continuous
Length
160 ft
3 main spans
Daily traffic
18,600
1984 count
Owner
County
County Highway Agency

About this bridge

Oneawa ST over Kawainui Canal is a prestressed concrete continuous tee beam carrying Oneawa ST over Kawainui Canal in Honolulu County, Hawaii. It was built in 1967, so it is 58 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 18,600 vehicles a day, projected to reach 23,250 by 2025. The structure is 160 ft (48.8 m) long and 56 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesOneawa ST
CrossesKawainui Canal
Location170E/KAINUI/ONEAWA ST
RouteCity Street 6016
CountyHonolulu County
StateHawaii
Coordinates21.40916, -157.75428
Functional classUrban Minor 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating42.9 US tons
Inventory rating24.3 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length160 ft (48.8 m)
Longest span53 ft (16.2 m)
Deck width56 ft (17.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,600 (1984)
Projected traffic23,250 by 2025
Trucks0%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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$1.2 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Oneawa ST over Kawainui Canal built?

It was built in 1967, making it 58 years old in 2025.

What condition is Oneawa ST over Kawainui Canal 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 2023.

How much traffic does Oneawa ST over Kawainui Canal carry?

About 18,600 vehicles per day (1984 count).

How long is Oneawa ST over Kawainui Canal?

The structure is 160 ft (48.8 m) long with a longest span of 53 ft (16.2 m) and a deck 56 ft wide.

Who owns Oneawa ST over Kawainui Canal?

It is owned by the County Highway Agency.