Structure 1033922 · Clinton County, NY

RTE I87 over Little Ausable River

Carries RTE I87 over Little Ausable River, 1.3 Mi N Jct I87 & SH 442.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure9/9 · Excellent
Substructure9/9 · Excellent
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT116 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 9/9Substructure 9/9

116 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.

Built201610 years old
Length116.1 ft35.4 m
Daily traffic6,782counted 2021
Last inspectedSeptember 2024every 24 months

Location

StateNew York
CountyClinton
Location1.3 Mi N Jct I87 & SH 442
CarriesRTE I87
CrossesLittle Ausable River
Coordinates44.59435, -73.49717

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length116.1 ft (35.4 m)
Max Span109.9 ft (33.5 m)
Deck Width41.3 ft (12.6 m)
Deck Area446.0 sq m
Main Spans1
Year Built2016

Traffic

Avg Daily Traffic6,782 (2021)
Truck Traffic18%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000001033922

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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