Structure 3501630008200 · Grafton County, NH

Bumps Intervale over Beebe River

Carries Bumps Intervale over Beebe River, 80 Ft Fr Perch Pond RD.

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 overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT84 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

84 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 through truss.

Built1877rebuilt 1972
Length84.0 ft25.6 m
Daily traffic96counted 2023
Last inspectedSeptember 2023every 24 months

Location

StateNew Hampshire
CountyGrafton
Location80 Ft Fr Perch Pond RD
CarriesBumps Intervale
CrossesBeebe River
Coordinates43.81454, -71.62179

Physical Characteristics

MaterialWood or Timber
DesignTruss - Thru
Total Length84.0 ft (25.6 m)
Max Span62.0 ft (18.9 m)
Deck Width13.8 ft (4.2 m)
Deck Area107.5 sq m
Main Spans1
Year Built1877 (reconstructed 1972)

Traffic

Avg Daily Traffic96 (2023)
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical3 — Scour critical
Structure Number003501630008200

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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