US Bridges

Piha Kahuku over Waikaumalo Stream

FairPosted for load

Hawaii County, Hawaii · Tmk 3-2-004:027 · Structure no. 001320001100003

Built
1930
95 years old
Condition
Fair
inspected January 2025
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
41 ft
2 main spans
Daily traffic
200
2008 count
Owner
County
County Highway Agency

About this bridge

Piha Kahuku over Waikaumalo Stream is a wood or timber stringer/multi-beam or girder carrying Piha Kahuku over Waikaumalo Stream in Hawaii County, Hawaii. It was built in 1930, so it is 95 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: posted for load restriction.

It carries about 200 vehicles a day, projected to reach 240 by 2030. The structure is 41 ft (12.5 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesPiha Kahuku
CrossesWaikaumalo Stream
LocationTmk 3-2-004:027
RouteCounty Highway 0
CountyHawaii County
StateHawaii
Coordinates19.91852, -155.18084
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating12.9 US tons
Inventory rating10 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length41 ft (12.5 m)
Longest span21 ft (6.4 m)
Deck width20 ft (6.1 m)
Roadway width13 ft (4 m)
Vertical clearance over deck0 ft (0 m)

Traffic and service

Average daily traffic200 (2008)
Projected traffic240 by 2030
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesRelief for waterway
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$175,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Piha Kahuku over Waikaumalo Stream built?

It was built in 1930, making it 95 years old in 2025.

What condition is Piha Kahuku over Waikaumalo 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 January 2025.

How much traffic does Piha Kahuku over Waikaumalo Stream carry?

About 200 vehicles per day (2008 count).

How long is Piha Kahuku over Waikaumalo Stream?

The structure is 41 ft (12.5 m) long with a longest span of 21 ft (6.4 m) and a deck 20 ft wide.

Who owns Piha Kahuku over Waikaumalo Stream?

It is owned by the County Highway Agency.