US Bridges

Kaumualii HWY over Kekaha Channel NO.1

Fair

Kauai County, Hawaii · .02 MI Se/Manu RD · Structure no. 007000500002511

Built
1984
41 years old
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
21 ft
2 main spans
Daily traffic
7,200
2017 count
Owner
State
State Highway Agency

About this bridge

Kaumualii HWY over Kekaha Channel NO.1 is a concrete culvert carrying Kaumualii HWY over Kekaha Channel NO.1 in Kauai County, Hawaii. It was built in 1984, so it is 41 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 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 7,200 vehicles a day, roughly 5% of them trucks, projected to reach 6,581 by 2025. The structure is 21 ft (6.3 m) long.

Location

Open in Google Maps
CarriesKaumualii HWY
CrossesKekaha Channel NO.1
Location.02 MI Se/Manu RD
RouteU.S. Route 50
CountyKauai County
StateHawaii
Coordinates21.96121, -159.70219
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
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
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment7: Better than present minimum criteria
Operating rating30 US tons
Inventory rating22.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,200 (2017)
Projected traffic6,581 by 2025
Trucks5%
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 statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Kaumualii HWY over Kekaha Channel NO.1 built?

It was built in 1984, making it 41 years old in 2025.

What condition is Kaumualii HWY over Kekaha Channel NO.1 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 April 2023.

How much traffic does Kaumualii HWY over Kekaha Channel NO.1 carry?

About 7,200 vehicles per day (2017 count), of which roughly 5% are trucks.

How long is Kaumualii HWY over Kekaha Channel NO.1?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m).

Who owns Kaumualii HWY over Kekaha Channel NO.1?

It is owned by the State Highway Agency.