Structure 5501750014300 · Sullivan County, NH

Leavitt Hill Road over Blow-me-down-brook

Carries Leavitt Hill Road over Blow-me-down-brook, 1.4 Mi Fr Corbin Park.

Overall conditionPoor

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

How ratings work
Decksets the rating4/9 · Poor
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
23 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 6/9Substructure 6/9

23 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built1950rebuilt 1991
Length23.0 ft7 m
Daily traffic112counted 2023
Last inspectedNovember 2024every 16 months

Location

StateNew Hampshire
CountySullivan
Location1.4 Mi Fr Corbin Park
CarriesLeavitt Hill Road
CrossesBlow-me-down-brook
Coordinates43.49707, -72.27396

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length23.0 ft (7 m)
Max Span20.0 ft (6.1 m)
Deck Width24.9 ft (7.6 m)
Deck Area53.2 sq m
Main Spans1
Year Built1950 (reconstructed 1991)

Traffic

Avg Daily Traffic112 (2023)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 16 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical8 — Stable, low risk
Structure Number005501750014300

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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