US Bridges

Anini RD over Unknown Strm

Fair

Kauai County, Hawaii · 1.9MI N of Kalihiwairdint · Structure no. 007510001510006

Built
1929
96 years old
Condition
Fair
inspected September 2024
Type
Culvert
Concrete
Length
23 ft
2 main spans
Daily traffic
999
2013 count
Owner
County
County Highway Agency

About this bridge

Anini RD over Unknown Strm is a concrete culvert carrying Anini RD over Unknown Strm in Kauai County, Hawaii. It was built in 1929, so it is 96 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. Its operating status is: open, posting recommended but not legally implemented.

It carries about 999 vehicles a day, projected to reach 1,000 by 2033. The structure is 23 ft (7 m) long and 26 ft wide.

Location

Open in Google Maps
CarriesAnini RD
CrossesUnknown Strm
Location1.9MI N of Kalihiwairdint
RouteCity Street 0
CountyKauai County
StateHawaii
Coordinates22.22456, -159.45283
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.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, posting recommended but not legally implemented
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating24.7 US tons
Inventory rating19 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadUnknown
Structure length23 ft (7 m)
Longest span10 ft (3 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic999 (2013)
Projected traffic1,000 by 2033
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 Anini RD over Unknown Strm built?

It was built in 1929, making it 96 years old in 2025.

What condition is Anini RD over Unknown Strm 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 Anini RD over Unknown Strm carry?

About 999 vehicles per day (2013 count).

How long is Anini RD over Unknown Strm?

The structure is 23 ft (7 m) long with a longest span of 10 ft (3 m) and a deck 26 ft wide.

Who owns Anini RD over Unknown Strm?

It is owned by the County Highway Agency.