Structure 4210390 · Tompkins County, NY

RTE 79 over Cayuga Inlet

Carries RTE 79 over Cayuga Inlet, 50 E Jct S.h.79 & S.h.89.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT104 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

104 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 multi-beam bridge.

Built199729 years old
Length104.0 ft31.7 m
Daily traffic10,628counted 2016
Last inspectedJuly 2023every 24 months

Location

StateNew York
CountyTompkins
Location50 E Jct S.h.79 & S.h.89
CarriesRTE 79
CrossesCayuga Inlet
Coordinates42.43938, -76.51197

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length104.0 ft (31.7 m)
Max Span98.8 ft (30.1 m)
Deck Width52.5 ft (16 m)
Deck Area507.2 sq m
Main Spans1
Year Built1997

Traffic

Avg Daily Traffic10,628 (2016)
Truck Traffic4%
Lanes On Bridge3

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000004210390

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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