Structure 6501090010600 · Strafford County, NH

Nh 9 over Bmrr

Carries Nh 9 over Bmrr, 2 Mi. From Madbury Tl6.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT126 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

126 ft end to end, longest span 56 ft. Lengths and the semi-truck 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
Length126.0 ft38.4 m
Daily traffic9,696counted 2023
Last inspectedApril 2023every 24 months

Location

StateNew Hampshire
CountyStrafford
Location2 Mi. From Madbury Tl6
CarriesNh 9
CrossesBmrr
Coordinates43.18688, -70.89770

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length126.0 ft (38.4 m)
Max Span56.1 ft (17.1 m)
Deck Width53.1 ft (16.2 m)
Deck Area622.1 sq m
Main Spans3
Year Built2011

Traffic

Avg Daily Traffic9,696 (2023)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number006501090010600

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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