Structure 3352770 · Delaware County, NY

Harper Road over Middle Brook

Carries Harper Road over Middle Brook, 6.8 Mi NW Of Stamford.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT56 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

56 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.

Built199036 years old
Length56.1 ft17.1 m
Daily traffic118counted 2017
Last inspectedMay 2023every 24 months

Location

StateNew York
CountyDelaware
Location6.8 Mi NW Of Stamford
CarriesHarper Road
CrossesMiddle Brook
Coordinates42.45851, -74.74221

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length56.1 ft (17.1 m)
Max Span51.8 ft (15.8 m)
Deck Width20.0 ft (6.1 m)
Deck Area104.3 sq m
Main Spans1
Year Built1990

Traffic

Avg Daily Traffic118 (2017)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000003352770

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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