Structure 1570026P0000000 · Teton County, WY

West Entrance Road over Madison River

Carries West Entrance Road over Madison River, 7.4 Miles East Of West En.

Overall conditionPoor

Set by its lowest-rated component: Deck at 3 of 9.

How ratings work
Decksets the rating3/9 · Serious
Superstructure5/9 · Fair
Substructure4/9 · Poor
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT201 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 3/9 · sets the ratingSuperstructure 5/9Substructure 4/9

201 ft end to end, longest span 78 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 multi-beam bridge.

Built195868 years old
Length201.1 ft61.3 m
Daily traffic2,525counted 2019
Last inspectedSeptember 2024every 24 months

Location

StateWyoming
CountyTeton
Location7.4 Miles East Of West En
CarriesWest Entrance Road
CrossesMadison River
Coordinates44.66336, -110.96503

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length201.1 ft (61.3 m)
Max Span78.1 ft (23.8 m)
Deck Width35.1 ft (10.7 m)
Deck Area655.9 sq m
Main Spans3
Year Built1958

Traffic

Avg Daily Traffic2,525 (2019)
Truck Traffic1%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerNational Park Service
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number1570026P0000000

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.