Structure 1701890012400 · Carroll County, NH

Us302 over Nhrr(conway Scenic Line)

Carries Us302 over Nhrr(conway Scenic Line), 2.1 Mi SW Jct Nh 16.

Overall conditionGood

Set by its lowest-rated component: Culvert at 8 of 9.

How ratings work
Culvertsets the rating8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT86 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 86 ft across. 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, so those are drawn as typical for a culvert.

Built200818 years old
Length86.0 ft26.2 m
Daily traffic4,065counted 2023
Last inspectedMarch 2024every 24 months

Location

StateNew Hampshire
CountyCarroll
Location2.1 Mi SW Jct Nh 16
CarriesUs302
CrossesNhrr(conway Scenic Line)
Coordinates44.09022, -71.20501

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length86.0 ft (26.2 m)
Max Span82.7 ft (25.2 m)
Deck Area256.8 sq m
Main Spans1
Year Built2008

Traffic

Avg Daily Traffic4,065 (2023)
Truck Traffic7%
Lanes On Bridge2

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 Number001701890012400

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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