Structure 20301450006700 · Grafton County, NH

Mousley Brook Road over Jacobs Brook

Carries Mousley Brook Road over Jacobs Brook, 80 Ft From Road Inv No.6.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT61 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 7/9 · sets the ratingSubstructure 8/9

61 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 multi-beam bridge.

Built201115 years old
Length61.0 ft18.6 m
Daily traffic96counted 2023
Last inspectedSeptember 2023every 24 months

Location

StateNew Hampshire
CountyGrafton
Location80 Ft From Road Inv No.6
CarriesMousley Brook Road
CrossesJacobs Brook
Coordinates43.86844, -72.05682

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length61.0 ft (18.6 m)
Max Span59.4 ft (18.1 m)
Deck Width16.1 ft (4.9 m)
Deck Area91.1 sq m
Main Spans1
Year Built2011

Traffic

Avg Daily Traffic96 (2023)
Truck Traffic4%
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number020301450006700

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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