US Bridges

Keaau-Pahoa Road over Unknown Stream

Good

Hawaii County, Hawaii · .9 MI S of Keaau-Pahoa · Structure no. 001001300500090

Built
2004
21 years old
Condition
Good
inspected May 2024
Type
Culvert
Steel
Length
28 ft
4 main spans
Daily traffic
24,330
2019 count
Owner
State
State Highway Agency

About this bridge

Keaau-Pahoa Road over Unknown Stream is a steel culvert carrying Keaau-Pahoa Road over Unknown Stream in Hawaii County, Hawaii. It was built in 2004, so it is 21 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 24,330 vehicles a day, projected to reach 25,600 by 2027. The structure is 28 ft (8.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesKeaau-Pahoa Road
CrossesUnknown Stream
Location.9 MI S of Keaau-Pahoa
RouteU.S. Route 130
CountyHawaii County
StateHawaii
Coordinates19.62361, -155.03185
Functional classRural Minor Arterial

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadHS 20
Structure length28 ft (8.4 m)
Longest span5 ft (1.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,330 (2019)
Projected traffic25,600 by 2027
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Keaau-Pahoa Road over Unknown Stream built?

It was built in 2004, making it 21 years old in 2025.

What condition is Keaau-Pahoa Road over Unknown 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 May 2024.

How much traffic does Keaau-Pahoa Road over Unknown Stream carry?

About 24,330 vehicles per day (2019 count).

How long is Keaau-Pahoa Road over Unknown Stream?

The structure is 28 ft (8.4 m) long with a longest span of 5 ft (1.5 m).

Who owns Keaau-Pahoa Road over Unknown Stream?

It is owned by the State Highway Agency.