US Bridges

Old Mamalahoa HWY over Kapue Stream

Fair

Hawaii County, Hawaii · Tmk: 2-7-028:052 · Structure no. 001270001100001

Built
1935
90 years old
Condition
Fair
inspected June 2023
Type
Arch - Deck
Concrete
Length
68 ft
1 main span
Daily traffic
450
1986 count
Owner
County
County Highway Agency

About this bridge

Old Mamalahoa HWY over Kapue Stream is a concrete arch - deck carrying Old Mamalahoa HWY over Kapue Stream in Hawaii County, Hawaii. It was built in 1935, so it is 90 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.

It carries about 450 vehicles a day, projected to reach 563 by 2025. The structure is 68 ft (20.7 m) long and 18 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesOld Mamalahoa HWY
CrossesKapue Stream
LocationTmk: 2-7-028:052
CountyHawaii County
StateHawaii
Coordinates19.78198, -155.0942
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
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating83.6 US tons
Inventory rating64.6 US tons

Structure

Structure typeArch - Deck
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length68 ft (20.7 m)
Longest span55 ft (16.8 m)
Deck width18 ft (5.5 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic450 (1986)
Projected traffic563 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$342,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Old Mamalahoa HWY over Kapue Stream built?

It was built in 1935, making it 90 years old in 2025.

What condition is Old Mamalahoa HWY over Kapue 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 Kapue Stream carry?

About 450 vehicles per day (1986 count).

How long is Old Mamalahoa HWY over Kapue Stream?

The structure is 68 ft (20.7 m) long with a longest span of 55 ft (16.8 m) and a deck 18 ft wide.

Who owns Old Mamalahoa HWY over Kapue Stream?

It is owned by the County Highway Agency.