Structure 25401750007600 · Grafton County, NH

Cross Road over Pemigewasset River

Carries Cross Road over Pemigewasset River, 0.18 Mi. E. Of Jct US 3.

Overall conditionGood

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

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

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT417 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

417 ft end to end, longest span 114 ft: about 6 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built1973rebuilt 2012
Length417.0 ft127.1 m
Daily traffic775counted 2023
Last inspectedApril 2024every 24 months

Location

StateNew Hampshire
CountyGrafton
Location0.18 Mi. E. Of Jct US 3
CarriesCross Road
CrossesPemigewasset River
Coordinates43.91732, -71.68332

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length417.0 ft (127.1 m)
Max Span113.8 ft (34.7 m)
Deck Width36.1 ft (11 m)
Deck Area1398.1 sq m
Main Spans4
Year Built1973 (reconstructed 2012)

Traffic

Avg Daily Traffic775 (2023)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number025401750007600

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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