US Bridges

Kapaia Road over Hanamaulu Stream

Good

Kauai County, Hawaii · 0.47 M Se/Kuhio-Kapaia · Structure no. 007320081137001

Built
2007
18 years old
Condition
Good
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
47 ft
1 main span
Daily traffic
100
2022 count
Owner
County
County Highway Agency

About this bridge

Kapaia Road over Hanamaulu Stream is a steel stringer/multi-beam or girder carrying Kapaia Road over Hanamaulu Stream in Kauai County, Hawaii. It was built in 2007, so it is 18 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 100 vehicles a day, projected to reach 100 by 2042. The structure is 47 ft (14.2 m) long and 11 ft wide.

Location

Open in Google Maps
CarriesKapaia Road
CrossesHanamaulu Stream
Location0.47 M Se/Kuhio-Kapaia
RouteCity Street 0None
CountyKauai County
StateHawaii
Coordinates21.9883, -159.35794
Functional classRural Local

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
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment7: Better than present minimum criteria
Operating rating25.4 US tons
Inventory rating19.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckSteel plate
Main spans1
Design loadHS 20
Structure length47 ft (14.2 m)
Longest span47 ft (14.2 m)
Deck width11 ft (3.3 m)
Roadway width11 ft (3.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2022)
Projected traffic100 by 2042
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-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 Kapaia Road over Hanamaulu Stream built?

It was built in 2007, making it 18 years old in 2025.

What condition is Kapaia Road over Hanamaulu Stream 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 Kapaia Road over Hanamaulu Stream carry?

About 100 vehicles per day (2022 count).

How long is Kapaia Road over Hanamaulu Stream?

The structure is 47 ft (14.2 m) long with a longest span of 47 ft (14.2 m) and a deck 11 ft wide.

Who owns Kapaia Road over Hanamaulu Stream?

It is owned by the County Highway Agency.