Structure 2224930 · Westchester County, NY

Millers Mill Road over Mianus River

Carries Millers Mill Road over Mianus River, 5.5 Mi E Of Mount Kisco.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT42 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 5/9 · sets the rating

42 ft end to end, longest span 20 ft. 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.

Built1930rebuilt 1992
Length42.0 ft12.8 m
Daily traffic117counted 2015
Last inspectedMarch 2023every 24 months

Location

StateNew York
CountyWestchester
Location5.5 Mi E Of Mount Kisco
CarriesMillers Mill Road
CrossesMianus River
Coordinates41.19414, -73.62407

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length42.0 ft (12.8 m)
Max Span20.0 ft (6.1 m)
Deck Width22.6 ft (6.9 m)
Deck Area88.3 sq m
Main Spans2
Year Built1930 (reconstructed 1992)

Traffic

Avg Daily Traffic117 (2015)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000002224930

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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