US Bridges

Old Mamalahoa HWY over Puuokalepa Stream

Fair

Hawaii County, Hawaii · Tmk: 2-7-023:003 · Structure no. 001270001100002

Built
1904
121 years old
Condition
Fair
inspected June 2023
Type
Arch - Deck
Concrete
Length
76 ft
1 main span
Daily traffic
1,090
1986 count
Owner
County
County Highway Agency

About this bridge

Old Mamalahoa HWY over Puuokalepa Stream is a concrete arch - deck carrying Old Mamalahoa HWY over Puuokalepa Stream in Hawaii County, Hawaii. It was built in 1904, so it is 121 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 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 1,090 vehicles a day, projected to reach 1,363 by 2025. The structure is 76 ft (23.2 m) long and 17 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesOld Mamalahoa HWY
CrossesPuuokalepa Stream
LocationTmk: 2-7-023:003
CountyHawaii County
StateHawaii
Coordinates19.79351, -155.09422
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
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating107.1 US tons
Inventory rating97.9 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckNot applicable
Main spans1
Design loadUnknown
Structure length76 ft (23.2 m)
Longest span32 ft (9.8 m)
Deck width17 ft (5.3 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,090 (1986)
Projected traffic1,363 by 2025
Trucks0%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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$380,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Mamalahoa HWY over Puuokalepa Stream built?

It was built in 1904, making it 121 years old in 2025.

What condition is Old Mamalahoa HWY over Puuokalepa 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 June 2023.

How much traffic does Old Mamalahoa HWY over Puuokalepa Stream carry?

About 1,090 vehicles per day (1986 count).

How long is Old Mamalahoa HWY over Puuokalepa Stream?

The structure is 76 ft (23.2 m) long with a longest span of 32 ft (9.8 m) and a deck 17 ft wide.

Who owns Old Mamalahoa HWY over Puuokalepa Stream?

It is owned by the County Highway Agency.