US Bridges

Kam HWY over S Kahana Strm

Fair

Honolulu County, Hawaii · 3.78MI Se/Scrd Falls RD · Structure no. 003000830302637

Built
1927
98 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
90 ft
5 main spans
Daily traffic
11,100
2017 count
Owner
State
State Highway Agency

About this bridge

Kam HWY over S Kahana Strm is a concrete continuous slab carrying Kam HWY over S Kahana 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 90 ft (27.4 m) long and 26 ft wide. If it were closed, the detour would be 72.1 mi (116 km).

Location

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CarriesKam HWY
CrossesS Kahana Strm
Location3.78MI Se/Scrd Falls RD
RouteU.S. Route 83
CountyHonolulu County
StateHawaii
Coordinates21.55444, -157.87073
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.
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 inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment4: Meets minimum tolerable limits to be left in place as is
Operating rating44 US tons
Inventory rating34 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadUnknown
Structure length90 ft (27.4 m)
Longest span18 ft (5.5 m)
Deck width26 ft (8 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 closed72.1 mi (116 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$2.6 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Kam HWY over S Kahana Strm built?

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

What condition is Kam HWY over S Kahana 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 July 2024.

How much traffic does Kam HWY over S Kahana Strm carry?

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

How long is Kam HWY over S Kahana Strm?

The structure is 90 ft (27.4 m) long with a longest span of 18 ft (5.5 m) and a deck 26 ft wide.

Who owns Kam HWY over S Kahana Strm?

It is owned by the State Highway Agency.