US Bridges

Kam HWY over Aiea Strm

Fair

Honolulu County, Hawaii · 0.24MI E/Honomanu ST · Structure no. 003000990402120

Built
1938
87 years old, rebuilt 1965
Condition
Fair
inspected February 2023
Type
Tee Beam
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
39,200
2017 count
Owner
State
State Highway Agency

About this bridge

Kam HWY over Aiea Strm is a prestressed concrete tee beam carrying Kam HWY over Aiea Strm in Honolulu County, Hawaii. It was built in 1938 and reconstructed in 1965, so it is 87 years old, older 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 39,200 vehicles a day, roughly 4% of them trucks, projected to reach 47,243 by 2025. The structure is 50 ft (15.2 m) long and 91 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesKam HWY
CrossesAiea Strm
Location0.24MI E/Honomanu ST
RouteU.S. Route 99
StateHawaii
Coordinates21.37705, -157.93421
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionFebruary 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 geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating34 US tons
Inventory rating23.6 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length50 ft (15.2 m)
Longest span47 ft (14.3 m)
Deck width91 ft (27.8 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic39,200 (2017)
Projected traffic47,243 by 2025
Trucks4%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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$744,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Kam HWY over Aiea Strm built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 1965.

What condition is Kam HWY over Aiea 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 February 2023.

How much traffic does Kam HWY over Aiea Strm carry?

About 39,200 vehicles per day (2017 count), of which roughly 4% are trucks.

How long is Kam HWY over Aiea Strm?

The structure is 50 ft (15.2 m) long with a longest span of 47 ft (14.3 m) and a deck 91 ft wide.

Who owns Kam HWY over Aiea Strm?

It is owned by the State Highway Agency.