US Bridges

Poipu Road over Waikomo Stream

Fair

Kauai County, Hawaii · 0.06MI Se/Lawai-Poipu · Structure no. 007219661126004

Built
1998
27 years old
Condition
Fair
inspected September 2024
Type
Culvert
Steel
Length
48 ft
2 main spans
Daily traffic
11,000
2017 count
Owner
County
County Highway Agency

About this bridge

Poipu Road over Waikomo Stream is a steel culvert carrying Poipu Road over Waikomo Stream in Kauai County, Hawaii. It was built in 1998, so it is 27 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 11,000 vehicles a day, projected to reach 14,100 by 2042. The structure is 48 ft (14.6 m) long.

Location

Open in Google Maps
CarriesPoipu Road
CrossesWaikomo Stream
Location0.06MI Se/Lawai-Poipu
RouteCity Street 0_
CountyKauai County
StateHawaii
Coordinates21.88289, -159.46759
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
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating107.1 US tons
Inventory rating107.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length48 ft (14.6 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,000 (2017)
Projected traffic14,100 by 2042
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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Poipu Road over Waikomo Stream built?

It was built in 1998, making it 27 years old in 2025.

What condition is Poipu Road over Waikomo 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 Poipu Road over Waikomo Stream carry?

About 11,000 vehicles per day (2017 count).

How long is Poipu Road over Waikomo Stream?

The structure is 48 ft (14.6 m) long with a longest span of 20 ft (6.1 m).

Who owns Poipu Road over Waikomo Stream?

It is owned by the County Highway Agency.