Structure 2200890018000 · Grafton County, NH

Nh116 over Whitcher Brook

Carries Nh116 over Whitcher Brook, 2 Mi E Haverhill Tl.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT30 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

30 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.

Built200323 years old
Length29.9 ft9.1 m
Daily traffic1,167counted 2023
Last inspectedJune 2023every 24 months

Location

StateNew Hampshire
CountyGrafton
Location2 Mi E Haverhill Tl
CarriesNh116
CrossesWhitcher Brook
Coordinates44.09631, -71.88692

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length29.9 ft (9.1 m)
Max Span27.9 ft (8.5 m)
Deck Width36.4 ft (11.1 m)
Deck Area101.0 sq m
Main Spans1
Year Built2003

Traffic

Avg Daily Traffic1,167 (2023)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number002200890018000

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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