US Bridges

Kam HWY over Koloa Strm-Laiemaloo

Fair

Honolulu County, Hawaii · 0.46MI N/Polyn Ctr RD · Structure no. 003000830301970

Built
1933
92 years old
Condition
Fair
inspected July 2024
Type
Slab
Concrete Continuous
Length
90 ft
5 main spans
Daily traffic
10,200
2017 count
Owner
State
State Highway Agency

About this bridge

Kam HWY over Koloa Strm-Laiemaloo is a concrete continuous slab carrying Kam HWY over Koloa Strm-Laiemaloo in Honolulu County, Hawaii. It was built in 1933, so it is 92 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 5 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 10,200 vehicles a day, roughly 5% of them trucks, projected to reach 13,630 by 2025. The structure is 90 ft (27.4 m) long and 27 ft wide.

Location

Open in Google Maps
CarriesKam HWY
CrossesKoloa Strm-Laiemaloo
Location0.46MI N/Polyn Ctr RD
RouteU.S. Route 83
CountyHonolulu County
StateHawaii
Coordinates21.63274, -157.92127
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.
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 inspectionJuly 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 alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating32.2 US tons
Inventory rating24.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadH 15
Structure length90 ft (27.4 m)
Longest span18 ft (5.5 m)
Deck width27 ft (8.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,200 (2017)
Projected traffic13,630 by 2025
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$803,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Kam HWY over Koloa Strm-Laiemaloo built?

It was built in 1933, making it 92 years old in 2025.

What condition is Kam HWY over Koloa Strm-Laiemaloo 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 Koloa Strm-Laiemaloo carry?

About 10,200 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Kam HWY over Koloa Strm-Laiemaloo?

The structure is 90 ft (27.4 m) long with a longest span of 18 ft (5.5 m) and a deck 27 ft wide.

Who owns Kam HWY over Koloa Strm-Laiemaloo?

It is owned by the State Highway Agency.