Structure 1570079P0000000 · Teton County, WY

South Entrance Roa over Lewis River

Carries South Entrance Roa over Lewis River, 9.8 Mi. N. Of South Entrn.

Overall conditionGood

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

How ratings work
Decksets the rating9/9 · Excellent
Superstructuresets the rating9/9 · Excellent
Substructuresets the rating9/9 · Excellent
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT357 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 9/9

357 ft end to end, longest span 178 ft: about 5 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.

Built20242 years old
Length357.0 ft108.8 m
Daily traffic6,580counted 2021
Last inspectedSeptember 2024every 24 months

Location

StateWyoming
CountyTeton
Location9.8 Mi. N. Of South Entrn
CarriesSouth Entrance Roa
CrossesLewis River
Coordinates44.26764, -110.63394

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length357.0 ft (108.8 m)
Max Span178.5 ft (54.4 m)
Deck Width46.3 ft (14.1 m)
Deck Area1534.1 sq m
Main Spans2
Year Built2024

Traffic

Avg Daily Traffic6,580 (2021)
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 Critical9 — Foundation above flood level
Structure Number1570079P0000000

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.