Structure 20009124-513142 · Windham County, VT

I 00091 Ml over I 91 Over TH No 20

Carries I 00091 Ml over I 91 Over TH No 20, 3.4 Mi N Exit 6.

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
CAR · 15 FT28 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

28 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 rigid-frame bridge.

Built196561 years old
Length27.9 ft8.5 m
Daily traffic15,000counted 2018
Last inspectedMay 2024every 24 months

Location

StateVermont
CountyWindham
Location3.4 Mi N Exit 6
CarriesI 00091 Ml
CrossesI 91 Over TH No 20
Coordinates43.22630, -72.45290

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length27.9 ft (8.5 m)
Max Span24.9 ft (7.6 m)
Deck Width38.1 ft (11.6 m)
Deck Area98.6 sq m
Main Spans1
Year Built1965

Traffic

Avg Daily Traffic15,000 (2018)
Truck Traffic13%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number20009124-513142

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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