Structure 5001350006800 · Coos County, NH

Bungy Road over Mohawk River

Carries Bungy Road over Mohawk River, 0.01 Mi S Jct Nh 26.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructure8/9 · Very Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT55 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 7/9 · sets the ratingSubstructure 8/9

55 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.

Built197749 years old
Length55.1 ft16.8 m
Daily traffic270counted 2023
Last inspectedJune 2023every 24 months

Location

StateNew Hampshire
CountyCoos
Location0.01 Mi S Jct Nh 26
CarriesBungy Road
CrossesMohawk River
Coordinates44.87446, -71.41072

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length55.1 ft (16.8 m)
Max Span49.9 ft (15.2 m)
Deck Width32.2 ft (9.8 m)
Deck Area164.6 sq m
Main Spans1
Year Built1977

Traffic

Avg Daily Traffic270 (2023)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number005001350006800

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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