US Bridges

Kokee RD over Mana Stream

Fair

Kauai County, Hawaii · 0.09MI Ne/Kekaha RD JCT · Structure no. 007120061112002

Built
1900
125 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete
Length
22 ft
1 main span
Daily traffic
1,750
1986 count
Owner
County
County Highway Agency

About this bridge

Kokee RD over Mana Stream is a concrete slab carrying Kokee RD over Mana Stream in Kauai County, Hawaii. It was built in 1900, so it is 125 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 1,750 vehicles a day, projected to reach 2,188 by 2025. The structure is 22 ft (6.6 m) long and 27 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesKokee RD
CrossesMana Stream
Location0.09MI Ne/Kekaha RD JCT
RouteCounty Highway 12006
CountyKauai County
StateHawaii
Coordinates21.97295, -159.71488
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating44.6 US tons
Inventory rating34.3 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length22 ft (6.6 m)
Longest span17 ft (5.1 m)
Deck width27 ft (8.2 m)
Roadway width24 ft (7.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,750 (1986)
Projected traffic2,188 by 2025
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$157,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Kokee RD over Mana Stream built?

It was built in 1900, making it 125 years old in 2025.

What condition is Kokee RD over Mana 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 September 2024.

How much traffic does Kokee RD over Mana Stream carry?

About 1,750 vehicles per day (1986 count).

How long is Kokee RD over Mana Stream?

The structure is 22 ft (6.6 m) long with a longest span of 17 ft (5.1 m) and a deck 27 ft wide.

Who owns Kokee RD over Mana Stream?

It is owned by the County Highway Agency.