US Bridges

Kawaihau RD over Kapaa Strm (kapahi Br)

Good

Kauai County, Hawaii · 0.08MI N/Moalepe-Kawaihau · Structure no. 007460021146001

Built
1900
125 years old, rebuilt 2017
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
52 ft
1 main span
Daily traffic
200
1984 count
Owner
County
County Highway Agency

About this bridge

Kawaihau RD over Kapaa Strm (kapahi Br) is a steel stringer/multi-beam or girder carrying Kawaihau RD over Kapaa Strm (kapahi Br) in Kauai County, Hawaii. It was built in 1900 and reconstructed in 2017, 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 200 vehicles a day, projected to reach 250 by 2025. The structure is 52 ft (15.8 m) long and 16 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesKawaihau RD
CrossesKapaa Strm (kapahi Br)
Location0.08MI N/Moalepe-Kawaihau
RouteCounty Highway 46002
CountyKauai County
StateHawaii
Coordinates22.10108, -159.37569
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating87.5 US tons
Inventory rating67.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadHL 93
Structure length52 ft (15.8 m)
Longest span49 ft (14.9 m)
Deck width16 ft (5 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic200 (1984)
Projected traffic250 by 2025
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$221,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Kawaihau RD over Kapaa Strm (kapahi Br) built?

It was built in 1900, making it 125 years old in 2025. It was reconstructed in 2017.

What condition is Kawaihau RD over Kapaa Strm (kapahi Br) in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does Kawaihau RD over Kapaa Strm (kapahi Br) carry?

About 200 vehicles per day (1984 count).

How long is Kawaihau RD over Kapaa Strm (kapahi Br)?

The structure is 52 ft (15.8 m) long with a longest span of 49 ft (14.9 m) and a deck 16 ft wide.

Who owns Kawaihau RD over Kapaa Strm (kapahi Br)?

It is owned by the County Highway Agency.