US Bridges

Hoaka RD over Waiakea Strm

Fair

Hawaii County, Hawaii · Tmk 2-4-054:026 · Structure no. 001240001100004

Built
1970
55 years old
Condition
Fair
inspected November 2023
Type
Culvert
Concrete
Length
42 ft
3 main spans
Daily traffic
410
1986 count
Owner
County
County Highway Agency

About this bridge

Hoaka RD over Waiakea Strm is a concrete culvert carrying Hoaka RD over Waiakea Strm in Hawaii County, Hawaii. It was built in 1970, so it is 55 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 410 vehicles a day, projected to reach 513 by 2025. The structure is 42 ft (12.9 m) long and 50 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

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CarriesHoaka RD
CrossesWaiakea Strm
LocationTmk 2-4-054:026
CountyHawaii County
StateHawaii
Coordinates19.66098, -155.12307
Functional classUrban 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.5 US tons
Inventory rating56.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length42 ft (12.9 m)
Longest span13 ft (4.1 m)
Deck width50 ft (15.2 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic410 (1986)
Projected traffic513 by 2025
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRelief for waterway
Detour if closed123.7 mi (199 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$40,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Hoaka RD over Waiakea Strm built?

It was built in 1970, making it 55 years old in 2025.

What condition is Hoaka RD over Waiakea Strm 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 November 2023.

How much traffic does Hoaka RD over Waiakea Strm carry?

About 410 vehicles per day (1986 count).

How long is Hoaka RD over Waiakea Strm?

The structure is 42 ft (12.9 m) long with a longest span of 13 ft (4.1 m) and a deck 50 ft wide.

Who owns Hoaka RD over Waiakea Strm?

It is owned by the County Highway Agency.