Structure 3000990402336 · Honolulu County, HI

99sb 23a over Ph Ramp Wn-ph I.c. #3

Carries 99sb 23a over Ph Ramp Wn-ph I.c. #3, 0.35 Mi S/plt DR Sep.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT301 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

301 ft end to end, longest span 191 ft: about 4 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built197551 years old
Length300.9 ft91.7 m
Daily traffic7,100counted 2017
Last inspectedJuly 2023every 24 months

Location

StateHawaii
CountyHonolulu
Location0.35 Mi S/plt DR Sep
Carries99sb 23a
CrossesPh Ramp Wn-ph I.c. #3
Coordinates21.34706, -157.93405

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignBox Beam - Multiple
Total Length300.9 ft (91.7 m)
Max Span190.9 ft (58.2 m)
Deck Width43.0 ft (13.1 m)
Deck Area1201.3 sq m
Main Spans2
Year Built1975

Traffic

Avg Daily Traffic7,100 (2017)
Truck Traffic5%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number003000990402336

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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