US Bridges

Kahana DR over Keaakaukau Gulch

GoodPosted for load

Hawaii County, Hawaii · Tmk: 4-6-009:054 · Structure no. 001460001100008

Built
1930
95 years old
Condition
Good
inspected May 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
25 ft
2 main spans
Daily traffic
700
1985 count
Owner
County
County Highway Agency

About this bridge

Kahana DR over Keaakaukau Gulch is a wood or timber stringer/multi-beam or girder carrying Kahana DR over Keaakaukau Gulch 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 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. Its operating status is: posted for load restriction.

It carries about 700 vehicles a day, projected to reach 875 by 2025. The structure is 25 ft (7.6 m) long and 15 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesKahana DR
CrossesKeaakaukau Gulch
LocationTmk: 4-6-009:054
RouteCounty Highway 0
CountyHawaii County
StateHawaii
Coordinates20.05035, -155.50728
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.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation3: Basically intolerable, requiring high priority of corrective action
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating10.7 US tons
Inventory rating8.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length25 ft (7.6 m)
Longest span22 ft (6.7 m)
Deck width15 ft (4.5 m)
Roadway width11 ft (3.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic700 (1985)
Projected traffic875 by 2025
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$170,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was Kahana DR over Keaakaukau Gulch built?

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

What condition is Kahana DR over Keaakaukau Gulch 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 2023.

How much traffic does Kahana DR over Keaakaukau Gulch carry?

About 700 vehicles per day (1985 count).

How long is Kahana DR over Keaakaukau Gulch?

The structure is 25 ft (7.6 m) long with a longest span of 22 ft (6.7 m) and a deck 15 ft wide.

Who owns Kahana DR over Keaakaukau Gulch?

It is owned by the County Highway Agency.