Structure 3201000008200 · Grafton County, NH

Nh 3a over Newfound River

Carries Nh 3a over Newfound River, 1.2 Mi N Of Jct RTE 104.

Overall conditionPoor

Set by its lowest-rated component: Deck and Superstructure and Substructure at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructuresets the rating4/9 · Poor
Substructuresets the rating4/9 · Poor
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT60 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 4/9Substructure 4/9

60 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 tee-beam bridge.

Built1924rebuilt 1965
Length60.0 ft18.3 m
Daily traffic5,690counted 2023
Last inspectedNovember 2024every 8 months

Location

StateNew Hampshire
CountyGrafton
Location1.2 Mi N Of Jct RTE 104
CarriesNh 3a
CrossesNewfound River
Coordinates43.60523, -71.74246

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length60.0 ft (18.3 m)
Max Span57.1 ft (17.4 m)
Deck Width33.1 ft (10.1 m)
Deck Area184.8 sq m
Main Spans1
Year Built1924 (reconstructed 1965)

Traffic

Avg Daily Traffic5,690 (2023)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 8 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number003201000008200

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.

Nearby Bridges