Structure 1010432 · Cortland County, NY

RTE I81 over RTE 13

Carries RTE I81 over RTE 13, Jct Of Rts 13 + I-81 NB.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT149 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 7/9

149 ft end to end, longest span 77 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.

Built196660 years old
Length149.0 ft45.4 m
Daily traffic10,265counted 2019
Last inspectedApril 2023every 24 months

Location

StateNew York
CountyCortland
LocationJct Of Rts 13 + I-81 NB
CarriesRTE I81
CrossesRTE 13
Coordinates42.60954, -76.16627

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length149.0 ft (45.4 m)
Max Span76.8 ft (23.4 m)
Deck Width32.8 ft (10 m)
Deck Area454 sq m
Main Spans3
Year Built1966

Traffic

Avg Daily Traffic10,265 (2019)
Truck Traffic26%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000001010432

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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