Structure 200248000108062 · Lamoille County, VT

Vt 0100c Alt over Gihon River

Carries Vt 0100c Alt over Gihon River, 0.9 Mi N Jct. Vt.15.

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 overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT39 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

39 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.

Built1929rebuilt 2018
Length39.0 ft11.9 m
Daily traffic2,700counted 2018
Last inspectedSeptember 2023every 24 months

Location

StateVermont
CountyLamoille
Location0.9 Mi N Jct. Vt.15
CarriesVt 0100c Alt
CrossesGihon River
Coordinates44.64023, -72.66066

Physical Characteristics

MaterialPrestressed Concrete
DesignSlab
Total Length39.0 ft (11.9 m)
Max Span37.1 ft (11.3 m)
Deck Width29.9 ft (9.1 m)
Deck Area108.3 sq m
Main Spans1
Year Built1929 (reconstructed 2018)

Traffic

Avg Daily Traffic2,700 (2018)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number200248000108062

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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