Structure 1021962 · Onondaga County, NY

RTE I81 over RTE 31

Carries RTE I81 over RTE 31, Jct Of Rts I-81 NB + 31.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT163 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 5/9

163 ft end to end, longest span 76 ft: about 2 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 multi-beam bridge.

Built195967 years old
Length163.1 ft49.7 m
Daily traffic22,525counted 2020
Last inspectedOctober 2024every 24 months

Location

StateNew York
CountyOnondaga
LocationJct Of Rts I-81 NB + 31
CarriesRTE I81
CrossesRTE 31
Coordinates43.17561, -76.11580

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length163.1 ft (49.7 m)
Max Span75.8 ft (23.1 m)
Deck Width47.2 ft (14.4 m)
Deck Area715.7 sq m
Main Spans3
Year Built1959

Traffic

Avg Daily Traffic22,525 (2020)
Truck Traffic12%
Lanes On Bridge3
Lanes Under Bridge5

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000001021962

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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