Structure 6101240004400 · Hillsborough County, NH

Pleasant Pond Road over Piscataquog River

Carries Pleasant Pond Road over Piscataquog River, 0.9mi. Francestown Tl.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT26 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

26 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.

Built1939rebuilt 1998
Length25.9 ft7.9 m
Daily traffic96counted 2023
Last inspectedAugust 2024every 24 months

Location

StateNew Hampshire
CountyHillsborough
Location0.9mi. Francestown Tl
CarriesPleasant Pond Road
CrossesPiscataquog River
Coordinates43.04749, -71.81952

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length25.9 ft (7.9 m)
Max Span23.0 ft (7 m)
Deck Width24.0 ft (7.3 m)
Deck Area57.7 sq m
Main Spans1
Year Built1939 (reconstructed 1998)

Traffic

Avg Daily Traffic96 (2023)
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number006101240004400

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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