Structure 21301620010000 · Sullivan County, NH

Nh120 over Bloods Brook

Carries Nh120 over Bloods Brook, 4.2 Mi From Lebanon 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 FT36 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

36 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.

Built1934rebuilt 1973
Length36.1 ft11 m
Daily traffic2,707counted 2023
Last inspectedApril 2024every 24 months

Location

StateNew Hampshire
CountySullivan
Location4.2 Mi From Lebanon Tl
CarriesNh120
CrossesBloods Brook
Coordinates43.53956, -72.26342

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length36.1 ft (11 m)
Max Span29.9 ft (9.1 m)
Deck Width35.8 ft (10.9 m)
Deck Area119.9 sq m
Main Spans1
Year Built1934 (reconstructed 1973)

Traffic

Avg Daily Traffic2,707 (2023)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number021301620010000

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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