Structure 19201390010400 · Sullivan County, NH

Nh 10 Nh 11 Nh103 over Sugar River

Carries Nh 10 Nh 11 Nh103 over Sugar River, 5.4mi From Claremont Tl.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT54 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

54 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 deck arch.

Built193096 years old
Length54.1 ft16.5 m
Daily traffic10,042counted 2023
Last inspectedJune 2023every 24 months

Location

StateNew Hampshire
CountySullivan
Location5.4mi From Claremont Tl
CarriesNh 10 Nh 11 Nh103
CrossesSugar River
Coordinates43.36309, -72.17216

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length54.1 ft (16.5 m)
Max Span47.9 ft (14.6 m)
Deck Width64.6 ft (19.7 m)
Deck Area325.1 sq m
Main Spans1
Year Built1930

Traffic

Avg Daily Traffic10,042 (2023)
Truck Traffic9%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number019201390010400

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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