Structure L48200001+04001 · Stillwater County, MT

Whitebird CR RD over Whitebird Creek 049

Carries Whitebird CR RD over Whitebird Creek 049, 7m NE Absarokee.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
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 FT28 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

28 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 channel-beam bridge.

Built199828 years old
Length27.9 ft8.5 m
Daily traffic263counted 2023
Last inspectedJune 2023every 24 months

Location

StateMontana
CountyStillwater
Location7m NE Absarokee
CarriesWhitebird CR RD
CrossesWhitebird Creek 049
Coordinates45.55350, -109.31751

Physical Characteristics

MaterialPrestressed Concrete
DesignChannel Beam
Total Length27.9 ft (8.5 m)
Max Span24.9 ft (7.6 m)
Deck Width25.6 ft (7.8 m)
Deck Area66.3 sq m
Main Spans1
Year Built1998

Traffic

Avg Daily Traffic263 (2023)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical4 — Foundations need monitoring
Structure NumberL48200001+04001

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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