Structure 18301300008300 · Rockingham County, NH

New Road over Csx

Carries New Road over Csx, 0.12mi. RTE 108.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT41 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

41 ft end to end, longest span 25 ft. 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.

Built1930rebuilt 2006
Length41.0 ft12.5 m
Daily traffic400counted 2023
Last inspectedJuly 2024every 24 months

Location

StateNew Hampshire
CountyRockingham
Location0.12mi. RTE 108
CarriesNew Road
CrossesCsx
Coordinates43.05025, -70.93231

Physical Characteristics

MaterialWood or Timber
DesignStringer/Multi-beam
Total Length41.0 ft (12.5 m)
Max Span24.9 ft (7.6 m)
Deck Width19.0 ft (5.8 m)
Deck Area72.5 sq m
Main Spans2
Year Built1930 (reconstructed 2006)

Traffic

Avg Daily Traffic400 (2023)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour CriticalNot applicable
Structure Number018301300008300

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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