Structure 2212620 · Chautauqua County, NY

Klondyke Road over Tb Twentymile Crk

Carries Klondyke Road over Tb Twentymile Crk, .9 Mi SW Of Sheldon Crnrs.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 3 of 9.

How ratings work
Deck5/9 · Fair
Superstructure4/9 · Poor
Substructuresets the rating3/9 · Serious
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 4/9Substructure 3/9 · sets the rating

30 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 girder bridge.

Built1900126 years old
Length29.9 ft9.1 m
Daily traffic4counted 2018
Last inspectedApril 2024every 12 months

Location

StateNew York
CountyChautauqua
Location.9 Mi SW Of Sheldon Crnrs
CarriesKlondyke Road
CrossesTb Twentymile Crk
Coordinates42.17349, -79.66824

Physical Characteristics

MaterialAluminum/Wrought Iron/Cast Iron
DesignGirder and Floorbeam
Total Length29.9 ft (9.1 m)
Max Span27.9 ft (8.5 m)
Deck Width16.7 ft (5.1 m)
Deck Area46.4 sq m
Main Spans1
Year Built1900

Traffic

Avg Daily Traffic4 (2018)
Truck Traffic6%
Lanes On Bridge1

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000002212620

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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