Structure 100514B01705141 · Essex County, VT

Mt Orne Road over Connecticut River

Carries Mt Orne Road over Connecticut River, At Vermont State Line.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT266 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

266 ft end to end, longest span 128 ft: about 4 semi-trucks nose to tail. Lengths and the semi-truck 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 through truss.

Built1911rebuilt 1988
Length266.1 ft81.1 m
Daily traffic658counted 2020
Last inspectedSeptember 2024every 24 months

Location

StateVermont
CountyEssex
LocationAt Vermont State Line
CarriesMt Orne Road
CrossesConnecticut River
Coordinates44.46019, -71.65279

Physical Characteristics

MaterialWood or Timber
DesignTruss - Thru
Total Length266.1 ft (81.1 m)
Max Span128.0 ft (39 m)
Deck Width15.4 ft (4.7 m)
Deck Area381.2 sq m
Main Spans2
Year Built1911 (reconstructed 1988)

Traffic

Avg Daily Traffic658 (2020)
Truck Traffic10%
Lanes On Bridge1

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is on the National Register of Historic Places
Scour Critical7 — Countermeasures installed
Structure Number100514B01705141

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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