US Bridges

Kaumualii HWY over Unnamed Stream

Fair

Kauai County, Hawaii · .09 MI E Lele Road · Structure no. 007000500301595

Built
1967
58 years old, rebuilt 1994
Condition
Fair
inspected January 2025
Type
Culvert
Concrete
Length
55 ft
5 main spans
Daily traffic
18,898
2019 count
Owner
State
State Highway Agency

About this bridge

Kaumualii HWY over Unnamed Stream is a concrete culvert carrying Kaumualii HWY over Unnamed Stream in Kauai County, Hawaii. It was built in 1967 and reconstructed in 1994, so it is 58 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.

It carries about 18,898 vehicles a day, roughly 2% of them trucks, projected to reach 16,740 by 2025. The structure is 55 ft (16.8 m) long and 44 ft wide.

Location

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CarriesKaumualii HWY
CrossesUnnamed Stream
Location.09 MI E Lele Road
RouteU.S. Route 50
CountyKauai County
StateHawaii
Coordinates21.90792, -159.59603
Functional classRural Minor 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating25 US tons
Inventory rating23.6 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadH 20
Structure length55 ft (16.8 m)
Longest span10 ft (3 m)
Deck width44 ft (13.4 m)
Roadway width41 ft (12.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,898 (2019)
Projected traffic16,740 by 2025
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Kaumualii HWY over Unnamed Stream built?

It was built in 1967, making it 58 years old in 2025. It was reconstructed in 1994.

What condition is Kaumualii HWY over Unnamed Stream 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 January 2025.

How much traffic does Kaumualii HWY over Unnamed Stream carry?

About 18,898 vehicles per day (2019 count), of which roughly 2% are trucks.

How long is Kaumualii HWY over Unnamed Stream?

The structure is 55 ft (16.8 m) long with a longest span of 10 ft (3 m) and a deck 44 ft wide.

Who owns Kaumualii HWY over Unnamed Stream?

It is owned by the State Highway Agency.