Structure 5000002 · Marshall County, IN

South Michigan ST over Yellow River

Carries South Michigan ST over Yellow River, 00.10 N Of Lake Street.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT130 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

130 ft end to end, longest span 60 ft. 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 deck arch.

Built1917rebuilt 2008
Length129.9 ft39.6 m
Daily traffic10,525counted 2024
Last inspectedOctober 2024every 24 months

Location

StateIndiana
CountyMarshall
Location00.10 N Of Lake Street
CarriesSouth Michigan ST
CrossesYellow River
Coordinates41.33950, -86.30888

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length129.9 ft (39.6 m)
Max Span59.7 ft (18.2 m)
Deck Width62.3 ft (19 m)
Deck Area752.4 sq m
Main Spans2
Year Built1917 (reconstructed 2008)

Traffic

Avg Daily Traffic10,525 (2024)
Truck Traffic8%
Lanes On Bridge4

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number5000002

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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