US Bridges

Hoonani RD over Waikomo Strm(poipu Br)

Good

Kauai County, Hawaii · 0.03MI S/Lawai-Hoonani Jt · Structure no. 007230031123004

Built
1998
27 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
114 ft
2 main spans
Daily traffic
1,179
1986 count
Owner
County
County Highway Agency

About this bridge

Hoonani RD over Waikomo Strm(poipu Br) is a prestressed concrete stringer/multi-beam or girder carrying Hoonani RD over Waikomo Strm(poipu Br) 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 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 1,179 vehicles a day, projected to reach 1,474 by 2025. The structure is 114 ft (34.8 m) long and 35 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesHoonani RD
CrossesWaikomo Strm(poipu Br)
Location0.03MI S/Lawai-Hoonani Jt
RouteCounty Highway 23003
StateHawaii
Coordinates21.88166, -159.46851
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.
Substructure7 GoodSome minor problems.
Channel and channel protection5 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, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating104.3 US tons
Inventory rating56.8 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length114 ft (34.8 m)
Longest span52 ft (15.8 m)
Deck width35 ft (10.8 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,179 (1986)
Projected traffic1,474 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$433,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Hoonani RD over Waikomo Strm(poipu Br) built?

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

What condition is Hoonani RD over Waikomo Strm(poipu 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 Hoonani RD over Waikomo Strm(poipu Br) carry?

About 1,179 vehicles per day (1986 count).

How long is Hoonani RD over Waikomo Strm(poipu Br)?

The structure is 114 ft (34.8 m) long with a longest span of 52 ft (15.8 m) and a deck 35 ft wide.

Who owns Hoonani RD over Waikomo Strm(poipu Br)?

It is owned by the County Highway Agency.