Structure 27401060010600 · Coos County, NH

Water Street over Johns River

Carries Water Street over Johns River, 0.05 Mi From Brown ST.

Overall conditionGood

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

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT28 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

28 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 slab bridge.

Built1932rebuilt 2013
Length27.9 ft8.5 m
Daily traffic182counted 2023
Last inspectedSeptember 2023every 24 months

Location

StateNew Hampshire
CountyCoos
Location0.05 Mi From Brown ST
CarriesWater Street
CrossesJohns River
Coordinates44.37460, -71.61857

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length27.9 ft (8.5 m)
Max Span22.0 ft (6.7 m)
Deck Width18.0 ft (5.5 m)
Deck Area46.8 sq m
Main Spans1
Year Built1932 (reconstructed 2013)

Traffic

Avg Daily Traffic182 (2023)
Truck Traffic4%
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number027401060010600

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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