US Bridges

Kam HWY over Makaua Strm

Fair

Honolulu County, Hawaii · 0.23MI W/Hiaka RD · Structure no. 003000830302791

Built
1927
98 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete
Length
44 ft
1 main span
Daily traffic
11,100
2017 count
Owner
State
State Highway Agency

About this bridge

Kam HWY over Makaua Strm is a concrete tee beam carrying Kam HWY over Makaua Strm in Honolulu County, Hawaii. It was built in 1927, so it is 98 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 11,100 vehicles a day, roughly 5% of them trucks, projected to reach 11,343 by 2025. The structure is 44 ft (13.4 m) long and 27 ft wide. If it were closed, the detour would be 49.7 mi (80 km).

Location

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CarriesKam HWY
CrossesMakaua Strm
Location0.23MI W/Hiaka RD
RouteU.S. Route 83
CountyHonolulu County
StateHawaii
Coordinates21.55704, -157.855
Functional classRural Principal Arterial - Other

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.
Substructure7 GoodSome minor problems.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating32.2 US tons
Inventory rating24.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length44 ft (13.4 m)
Longest span42 ft (12.8 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,100 (2017)
Projected traffic11,343 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed49.7 mi (80 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedDeck replacement with only incidental widening
Estimated improvement cost$550,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Kam HWY over Makaua Strm built?

It was built in 1927, making it 98 years old in 2025.

What condition is Kam HWY over Makaua 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 June 2024.

How much traffic does Kam HWY over Makaua Strm carry?

About 11,100 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Kam HWY over Makaua Strm?

The structure is 44 ft (13.4 m) long with a longest span of 42 ft (12.8 m) and a deck 27 ft wide.

Who owns Kam HWY over Makaua Strm?

It is owned by the State Highway Agency.