Structure 1570064P0000000 · Teton County, WY

Firehole Lake Driv over Thermal Area Drainage

Carries Firehole Lake Driv over Thermal Area Drainage, 10 +/- Mi. South Of Madis.

Overall conditionPoor

Set by its lowest-rated component: Deck at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructure5/9 · Fair
Substructure5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
25 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 5/9Substructure 5/9

25 ft end to end, longest span 4 ft. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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 slab bridge.

Built193591 years old
Length24.6 ft7.5 m
Daily traffic1,500counted 2019
Last inspectedSeptember 2024every 24 months

Location

StateWyoming
CountyTeton
Location10 +/- Mi. South Of Madis
CarriesFirehole Lake Driv
CrossesThermal Area Drainage
Coordinates44.54311, -110.79136

Physical Characteristics

MaterialWood or Timber
DesignSlab
Total Length24.6 ft (7.5 m)
Max Span4.3 ft (1.3 m)
Deck Width24.3 ft (7.4 m)
Deck Area55.5 sq m
Main Spans6
Year Built1935

Traffic

Avg Daily Traffic1,500 (2019)
Truck Traffic15%
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 Critical5 — Stable for scour
Structure Number1570064P0000000

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.

Nearby Bridges