Structure L9299 · Martin County, MN

T 49 over Elm Creek

Carries T 49 over Elm Creek, 0.9 Mi S Of Jct Csah 44.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT93 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

93 ft end to end, longest span 31 ft. 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.

Built197056 years old
Length93.2 ft28.4 m
Daily traffic36counted 1986
Last inspectedSeptember 2023every 24 months

Location

StateMinnesota
CountyMartin
Location0.9 Mi S Of Jct Csah 44
CarriesT 49
CrossesElm Creek
Coordinates43.76212, -94.32757

Physical Characteristics

MaterialPrestressed Concrete
DesignChannel Beam
Total Length93.2 ft (28.4 m)
Max Span30.8 ft (9.4 m)
Deck Width22.0 ft (6.7 m)
Deck Area190.3 sq m
Main Spans3
Year Built1970

Traffic

Avg Daily Traffic36 (1986)
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerTown/Township Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberL9299

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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