Structure 1280001100002 · Hawaii County, HI

Old Mamalahoa HWY over Honomu Stream

Carries Old Mamalahoa HWY over Honomu Stream, Tmk: 2-8-013:003.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT95 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

95 ft end to end. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a box-beam bridge.

Built1935rebuilt 2002
Length94.8 ft28.9 m
Daily traffic500counted 2000
Last inspectedJune 2024every 24 months

Location

StateHawaii
CountyHawaii
LocationTmk: 2-8-013:003
CarriesOld Mamalahoa HWY
CrossesHonomu Stream
Coordinates19.86481, -155.11250

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Multiple
Total Length94.8 ft (28.9 m)
Max Span87.9 ft (26.8 m)
Deck Width29.9 ft (9.1 m)
Deck Area263.0 sq m
Main Spans1
Year Built1935 (reconstructed 2002)

Traffic

Avg Daily Traffic500 (2000)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number001280001100002

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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