Structure 40304000001050 · Teton County, WY

Forest Road 30400 over Gros Ventre River

Carries Forest Road 30400 over Gros Ventre River, 20 Mi. Ne. Of Jackson Wy.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT227 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

227 ft end to end, longest span 87 ft: about 3 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 box-beam bridge.

Built196957 years old
Length227.0 ft69.2 m
Daily traffic450counted 2018
Last inspectedSeptember 2024every 24 months

Location

StateWyoming
CountyTeton
Location20 Mi. Ne. Of Jackson Wy
CarriesForest Road 30400
CrossesGros Ventre River
Coordinates43.61004, -110.45009

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length227.0 ft (69.2 m)
Max Span86.9 ft (26.5 m)
Deck Width30.2 ft (9.2 m)
Deck Area636.6 sq m
Main Spans3
Year Built1969

Traffic

Avg Daily Traffic450 (2018)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical4 — Foundations need monitoring
Structure Number040304000001050

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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