US Bridges

Kam HWY over NF Kaukonahua(k Thot)

Poor

Honolulu County, Hawaii · 0.18MI N/Kilani Ave · Structure no. 003000800300071

Built
1932
93 years old
Condition
Poor
inspected March 2024
Type
Truss - Thru
Steel
Length
217 ft
1 main span
Daily traffic
25,800
2019 count
Owner
State
State Highway Agency

About this bridge

Kam HWY over NF Kaukonahua(k Thot) is a steel truss - thru carrying Kam HWY over NF Kaukonahua(k Thot) in Honolulu County, Hawaii. It was built in 1932, so it is 93 years old, older than the Hawaii average of 63.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 25,800 vehicles a day, roughly 4% of them trucks, projected to reach 27,089 by 2025. The structure is 217 ft (66.1 m) long and 26 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesKam HWY
CrossesNF Kaukonahua(k Thot)
Location0.18MI N/Kilani Ave
RouteU.S. Route 80
StateHawaii
Coordinates21.50088, -158.02947
Functional classUrban Other Principal Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating39.7 US tons
Inventory rating30.3 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length217 ft (66.1 m)
Longest span210 ft (64 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck14 ft (4.2 m)

Traffic and service

Average daily traffic25,800 (2019)
Projected traffic27,089 by 2025
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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 statusEligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$6.8 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Kam HWY over NF Kaukonahua(k Thot) built?

It was built in 1932, making it 93 years old in 2025.

What condition is Kam HWY over NF Kaukonahua(k Thot) in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does Kam HWY over NF Kaukonahua(k Thot) carry?

About 25,800 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is Kam HWY over NF Kaukonahua(k Thot)?

The structure is 217 ft (66.1 m) long with a longest span of 210 ft (64 m) and a deck 26 ft wide.

Who owns Kam HWY over NF Kaukonahua(k Thot)?

It is owned by the State Highway Agency.