Structure 92202000001019 · Coos County, NH

Fdr 13 over Upper Ammonoosuc River

Carries Fdr 13 over Upper Ammonoosuc River, Map 02.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT88 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

88 ft end to end, longest span 43 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 tee-beam bridge.

Built1947rebuilt 2006
Length87.9 ft26.8 m
Daily traffic502 lanes
Last inspectedOctober 2024every 24 months

Location

StateNew Hampshire
CountyCoos
LocationMap 02
CarriesFdr 13
CrossesUpper Ammonoosuc River
Coordinates44.52296, -71.28789

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length87.9 ft (26.8 m)
Max Span42.7 ft (13 m)
Deck Width22.0 ft (6.7 m)
Deck Area179.6 sq m
Main Spans2
Year Built1947 (reconstructed 2006)

Traffic

Avg Daily Traffic50
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical4 — Foundations need monitoring
Structure Number092202000001019

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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