Structure I00094111+05932 · Rosebud County, MT

I 94 over Sweeney Creek-co RD

Carries I 94 over Sweeney Creek-co RD, 7m E Rosebud.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT221 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

221 ft end to end, longest span 67 ft: about 3 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.

Built1970rebuilt 2010
Length221.5 ft67.5 m
Daily traffic2,636counted 2023
Last inspectedJune 2023every 24 months

Location

StateMontana
CountyRosebud
Location7m E Rosebud
CarriesI 94
CrossesSweeney Creek-co RD
Coordinates46.26769, -106.32411

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length221.5 ft (67.5 m)
Max Span66.6 ft (20.3 m)
Deck Width44.9 ft (13.7 m)
Deck Area924.8 sq m
Main Spans4
Year Built1970 (reconstructed 2010)

Traffic

Avg Daily Traffic2,636 (2023)
Truck Traffic21%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberI00094111+05932

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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