US Bridges

Kamalu Rd. over Opaekaa Stream (kamalu)

FairPosted for load

Kauai County, Hawaii · 0.16 MI S/Kamalu Rd. · Structure no. 007420151142002

Built
1975
50 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete Continuous
Length
103 ft
3 main spans
Daily traffic
6,000
2009 count
Owner
County
County Highway Agency

About this bridge

Kamalu Rd. over Opaekaa Stream (kamalu) is a concrete continuous tee beam carrying Kamalu Rd. over Opaekaa Stream (kamalu) in Kauai County, Hawaii. It was built in 1975, so it is 50 years old, younger 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. Its operating status is: posted for load restriction.

It carries about 6,000 vehicles a day, projected to reach 6,500 by 2020. The structure is 103 ft (31.4 m) long and 30 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesKamalu Rd.
CrossesOpaekaa Stream (kamalu)
Location0.16 MI S/Kamalu Rd.
RouteCounty Highway 581
CountyKauai County
StateHawaii
Coordinates22.05686, -159.37007
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation4: Meets minimum tolerable limits to be 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 rating24.3 US tons
Inventory rating18.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length103 ft (31.4 m)
Longest span40 ft (12.2 m)
Deck width30 ft (9.1 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,000 (2009)
Projected traffic6,500 by 2020
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$468,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Kamalu Rd. over Opaekaa Stream (kamalu) built?

It was built in 1975, making it 50 years old in 2025.

What condition is Kamalu Rd. over Opaekaa Stream (kamalu) 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 September 2024.

How much traffic does Kamalu Rd. over Opaekaa Stream (kamalu) carry?

About 6,000 vehicles per day (2009 count).

How long is Kamalu Rd. over Opaekaa Stream (kamalu)?

The structure is 103 ft (31.4 m) long with a longest span of 40 ft (12.2 m) and a deck 30 ft wide.

Who owns Kamalu Rd. over Opaekaa Stream (kamalu)?

It is owned by the County Highway Agency.