Structure 101470006700 · Sullivan County, NH

Grout Hill Road over Cold River

Carries Grout Hill Road over Cold River, 202 Ft From Jct Nh123a.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck7/9 · Good
Superstructure6/9 · Satisfactory
Substructuresets the rating4/9 · Poor
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT60 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9Substructure 4/9 · sets the rating

60 ft end to end, longest span 29 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 multi-beam bridge.

Built1930rebuilt 2008
Length60.4 ft18.4 m
Daily traffic96counted 2023
Last inspectedAugust 2024every 16 months

Location

StateNew Hampshire
CountySullivan
Location202 Ft From Jct Nh123a
CarriesGrout Hill Road
CrossesCold River
Coordinates43.19161, -72.25052

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length60.4 ft (18.4 m)
Max Span28.9 ft (8.8 m)
Deck Width16.7 ft (5.1 m)
Deck Area93.8 sq m
Main Spans2
Year Built1930 (reconstructed 2008)

Traffic

Avg Daily Traffic96 (2023)
Truck Traffic4%
Lanes On Bridge1

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 16 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical3 — Scour critical
Structure Number000101470006700

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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