Structure U01212001+08001 · Gallatin County, MT

E Kagy BLVD over Bozeman Creek

Carries E Kagy BLVD over Bozeman Creek, Bozeman-e Kagy BLVD.

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 overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT57 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

57 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 multi-beam bridge.

Built198442 years old
Length57.1 ft17.4 m
Daily traffic10,757counted 2023
Last inspectedDecember 2024every 24 months

Location

StateMontana
CountyGallatin
LocationBozeman-e Kagy BLVD
CarriesE Kagy BLVD
CrossesBozeman Creek
Coordinates45.65707, -111.02848

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length57.1 ft (17.4 m)
Max Span55.1 ft (16.8 m)
Deck Width86.0 ft (26.2 m)
Deck Area455.9 sq m
Main Spans1
Year Built1984

Traffic

Avg Daily Traffic10,757 (2023)
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberU01212001+08001

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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