Structure L02223000+02001 · Big Horn County, MT

Irrc0unty Road 223 over Soap Creek 020

Carries Irrc0unty Road 223 over Soap Creek 020, 9m SW ST Xavier.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT72 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

72 ft end to end. 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 or the layout of the shorter spans, so those are drawn as typical for a tee-beam bridge.

Built198046 years old
Length71.9 ft21.9 m
Daily traffic100counted 2025
Last inspectedJanuary 2024every 24 months

Location

StateMontana
CountyBig Horn
Location9m SW ST Xavier
CarriesIrrc0unty Road 223
CrossesSoap Creek 020
Coordinates45.37192, -107.78721

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length71.9 ft (21.9 m)
Max Span70.9 ft (21.6 m)
Deck Width24.0 ft (7.3 m)
Deck Area159.9 sq m
Main Spans1
Year Built1980

Traffic

Avg Daily Traffic100 (2025)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJanuary 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure NumberL02223000+02001

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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