Structure 23600790010600 · Coos County, NH

US 2 over Rattle River

Carries US 2 over Rattle River, 2.9 Mi East Of Gorham T/l.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT57 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

57 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.

Built197353 years old
Length57.1 ft17.4 m
Daily traffic3,395counted 2023
Last inspectedApril 2024every 24 months

Location

StateNew Hampshire
CountyCoos
Location2.9 Mi East Of Gorham T/l
CarriesUS 2
CrossesRattle River
Coordinates44.40091, -71.10993

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length57.1 ft (17.4 m)
Max Span51.8 ft (15.8 m)
Deck Width46.6 ft (14.2 m)
Deck Area247.1 sq m
Main Spans1
Year Built1973

Traffic

Avg Daily Traffic3,395 (2023)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number023600790010600

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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