US Bridges

Hawaii Belt Road over Kainehe Gulch

Fair

Hawaii County, Hawaii · 1-34MI Se/Paauilo Town · Structure no. 001000190306496

Built
1985
40 years old
Condition
Fair
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
253 ft
2 main spans
Daily traffic
6,700
2019 count
Owner
State
State Highway Agency

About this bridge

Hawaii Belt Road over Kainehe Gulch is a prestressed concrete continuous stringer/multi-beam or girder carrying Hawaii Belt Road over Kainehe Gulch in Hawaii County, Hawaii. It was built in 1985, so it is 40 years old, younger 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 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 6,700 vehicles a day, roughly 9% of them trucks, projected to reach 7,410 by 2025. The structure is 253 ft (77 m) long and 50 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesHawaii Belt Road
CrossesKainehe Gulch
Location1-34MI Se/Paauilo Town
RouteU.S. Route 19
CountyHawaii County
StateHawaii
Coordinates20.03071, -155.34999
Functional classRural Minor Arterial

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating88.2 US tons
Inventory rating65.4 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2 (+2 approach)
Design loadHS 20
Structure length253 ft (77 m)
Longest span76 ft (23.2 m)
Deck width50 ft (15.2 m)
Roadway width47 ft (14.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,700 (2019)
Projected traffic7,410 by 2025
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

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$1.6 million
NavigationNo navigation control on waterway

Frequently asked questions

When was Hawaii Belt Road over Kainehe Gulch built?

It was built in 1985, making it 40 years old in 2025.

What condition is Hawaii Belt Road over Kainehe Gulch 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 March 2024.

How much traffic does Hawaii Belt Road over Kainehe Gulch carry?

About 6,700 vehicles per day (2019 count), of which roughly 9% are trucks.

How long is Hawaii Belt Road over Kainehe Gulch?

The structure is 253 ft (77 m) long with a longest span of 76 ft (23.2 m) and a deck 50 ft wide.

Who owns Hawaii Belt Road over Kainehe Gulch?

It is owned by the State Highway Agency.