US Bridges

Kekaha RD over Cox Drainage Canal

Fair

Kauai County, Hawaii · 0.01MI E/Manu RD · Structure no. 007119831113005

Built
1983
42 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
6,999
2019 count
Owner
County
County Highway Agency

About this bridge

Kekaha RD over Cox Drainage Canal is a concrete continuous culvert carrying Kekaha RD over Cox Drainage Canal in Kauai County, Hawaii. It was built in 1983, so it is 42 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 6,999 vehicles a day, projected to reach 9,000 by 2039. The structure is 21 ft (6.4 m) long and 32 ft wide.

CarriesKekaha RD
CrossesCox Drainage Canal
Location0.01MI E/Manu RD
RouteCounty Highway 0
StateHawaii
Coordinates21.96274, -159.70186
Functional classRural Minor 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating26.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.4 m)
Longest span10 ft (3 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,999 (2019)
Projected traffic9,000 by 2039
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Kekaha RD over Cox Drainage Canal built?

It was built in 1983, making it 42 years old in 2025.

What condition is Kekaha RD over Cox Drainage Canal 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 Kekaha RD over Cox Drainage Canal carry?

About 6,999 vehicles per day (2019 count).

How long is Kekaha RD over Cox Drainage Canal?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m) and a deck 32 ft wide.

Who owns Kekaha RD over Cox Drainage Canal?

It is owned by the County Highway Agency.