Structure 21401110006200 · Rockingham County, NH

Nh125 over Csx

Carries Nh125 over Csx, .8 Mi From Jct Nh121.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT90 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

90 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.

Built199234 years old
Length89.9 ft27.4 m
Daily traffic19,888counted 2023
Last inspectedMarch 2024every 24 months

Location

StateNew Hampshire
CountyRockingham
Location.8 Mi From Jct Nh121
CarriesNh125
CrossesCsx
Coordinates42.82886, -71.10755

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length89.9 ft (27.4 m)
Max Span80.1 ft (24.4 m)
Deck Width84.6 ft (25.8 m)
Deck Area706.9 sq m
Main Spans1
Year Built1992

Traffic

Avg Daily Traffic19,888 (2023)
Truck Traffic5%
Lanes On Bridge5

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number021401110006200

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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