Structure CEPNEDNH3310003 · Cheshire County, NH

Surry Mt Access RD over Spillway Channel

Carries Surry Mt Access RD over Spillway Channel, 9.65 Km North Of Keene Nh.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT232 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

232 ft end to end, longest span 93 ft: about 3 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.

Built196264 years old
Length232.0 ft70.7 m
Daily traffic25counted 2024
Last inspectedSeptember 2024every 24 months

Location

StateNew Hampshire
CountyCheshire
Location9.65 Km North Of Keene Nh
CarriesSurry Mt Access RD
CrossesSpillway Channel
Coordinates42.99756, -72.31232

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length232.0 ft (70.7 m)
Max Span93.2 ft (28.4 m)
Deck Width14.8 ft (4.5 m)
Deck Area318.1 sq m
Main Spans3
Year Built1962

Traffic

Avg Daily Traffic25 (2024)
Truck Traffic2%
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCorps of Engineers
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberCEPNEDNH3310003

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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