Structure 24000680017300 · Coos County, NH

Leighton Meadow RD over Phillips Brook

Carries Leighton Meadow RD over Phillips Brook, 100 Ft Fr Sullivan RD 61.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 3 of 9.

How ratings work
Deck5/9 · Fair
Superstructure5/9 · Fair
Substructuresets the rating3/9 · Serious
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT40 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 5/9Substructure 3/9 · sets the rating

40 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 tee-beam bridge.

Built1940rebuilt 1970
Length40.0 ft12.2 m
Daily traffic96counted 2023
Last inspectedOctober 2024every 16 months

Location

StateNew Hampshire
CountyCoos
Location100 Ft Fr Sullivan RD 61
CarriesLeighton Meadow RD
CrossesPhillips Brook
Coordinates44.63727, -71.32796

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length40.0 ft (12.2 m)
Max Span35.1 ft (10.7 m)
Deck Width13.5 ft (4.1 m)
Deck Area50.0 sq m
Main Spans1
Year Built1940 (reconstructed 1970)

Traffic

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

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 16 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical4 — Foundations need monitoring
Structure Number024000680017300

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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