Structure LWM · Natrona County, WY

Na Cnty RD 403 over Stinking Creek

Carries Na Cnty RD 403 over Stinking Creek, 23 Mi SW Of Casper.

Overall conditionFair

Set by its lowest-rated component: Culvert at 6 of 9.

How ratings work
Culvertsets the rating6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT42 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 6/9

A culvert 42 ft across with 4 openings. Lengths and the car 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, so those are drawn as typical for a culvert.

Built200719 years old
Length42.0 ft12.8 m
Daily traffic2counted 2024
Last inspectedAugust 2023every 24 months

Location

StateWyoming
CountyNatrona
Location23 Mi SW Of Casper
CarriesNa Cnty RD 403
CrossesStinking Creek
Coordinates42.54202, -106.45956

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length42.0 ft (12.8 m)
Max Span10.5 ft (3.2 m)
Deck Width18.0 ft (5.5 m)
Deck Area70.4 sq m
Main Spans4
Year Built2007

Traffic

Avg Daily Traffic2 (2024)
Lanes On Bridge1

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberLWM

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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