Structure 26002050009800 · Sullivan County, NH

Old Cheshire Co RD over Spring Brook

Carries Old Cheshire Co RD over Spring Brook, 0.1 Mi E Unity Springs RD.

Overall conditionGood

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

How ratings work
Decksets the rating9/9 · Excellent
Superstructuresets the rating9/9 · Excellent
Substructuresets the rating9/9 · Excellent
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT26 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 9/9

26 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 rigid-frame bridge.

Built201313 years old
Length25.9 ft7.9 m
Daily traffic96counted 2023
Last inspectedSeptember 2024every 24 months

Location

StateNew Hampshire
CountySullivan
Location0.1 Mi E Unity Springs RD
CarriesOld Cheshire Co RD
CrossesSpring Brook
Coordinates43.31223, -72.19339

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length25.9 ft (7.9 m)
Max Span24.0 ft (7.3 m)
Deck Width26.9 ft (8.2 m)
Deck Area64.8 sq m
Main Spans1
Year Built2013

Traffic

Avg Daily Traffic96 (2023)
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number026002050009800

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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