Structure 25100800009000 · Cheshire County, NH

Westport Road over Ashuelot River

Carries Westport Road over Ashuelot River, .68 Mi NE Winchester Tl.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT143 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

143 ft end to end. Lengths and the semi-truck 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 through truss.

Built1862rebuilt 2001
Length143.0 ft43.6 m
Daily traffic792counted 2023
Last inspectedAugust 2024every 24 months

Location

StateNew Hampshire
CountyCheshire
Location.68 Mi NE Winchester Tl
CarriesWestport Road
CrossesAshuelot River
Coordinates42.84734, -72.34031

Physical Characteristics

MaterialWood or Timber
DesignTruss - Thru
Total Length143.0 ft (43.6 m)
Max Span123.0 ft (37.5 m)
Deck Width17.1 ft (5.2 m)
Deck Area226.7 sq m
Main Spans1
Year Built1862 (reconstructed 2001)

Traffic

Avg Daily Traffic792 (2023)
Truck Traffic10%
Lanes On Bridge1

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is on the National Register of Historic Places
Scour Critical8 — Stable, low risk
Structure Number025100800009000

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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