US Bridges

Kahoa Street over Kaiwiki Stream

FairPosted for load

Hawaii County, Hawaii · Tmk 2-6-012:033 · Structure no. 001260001100005

Built
1920
105 years old
Condition
Fair
inspected August 2023
Type
Tee Beam
Concrete Continuous
Length
68 ft
3 main spans
Daily traffic
160
1986 count
Owner
County
County Highway Agency

About this bridge

Kahoa Street over Kaiwiki Stream is a concrete continuous tee beam carrying Kahoa Street over Kaiwiki Stream in Hawaii County, Hawaii. It was built in 1920, so it is 105 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 160 vehicles a day, projected to reach 200 by 2025. The structure is 68 ft (20.7 m) long and 20 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesKahoa Street
CrossesKaiwiki Stream
LocationTmk 2-6-012:033
CountyHawaii County
StateHawaii
Coordinates19.75736, -155.09511
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating20.4 US tons
Inventory rating15.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length68 ft (20.7 m)
Longest span32 ft (9.8 m)
Deck width20 ft (6.1 m)
Roadway width18 ft (5.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic160 (1986)
Projected traffic200 by 2025
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
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$333,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Kahoa Street over Kaiwiki Stream built?

It was built in 1920, making it 105 years old in 2025.

What condition is Kahoa Street over Kaiwiki 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 August 2023.

How much traffic does Kahoa Street over Kaiwiki Stream carry?

About 160 vehicles per day (1986 count).

How long is Kahoa Street over Kaiwiki Stream?

The structure is 68 ft (20.7 m) long with a longest span of 32 ft (9.8 m) and a deck 20 ft wide.

Who owns Kahoa Street over Kaiwiki Stream?

It is owned by the County Highway Agency.