Structure 32210 · Clinton County, IN

US 421 over Kilmore Creek

Carries US 421 over Kilmore Creek, 00.31 S SR 38.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT129 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 7/9

129 ft end to end. 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 through truss.

Built1941rebuilt 2015
Length128.9 ft39.3 m
Daily traffic3,870counted 2012
Last inspectedJuly 2023every 24 months

Location

StateIndiana
CountyClinton
Location00.31 S SR 38
CarriesUS 421
CrossesKilmore Creek
Coordinates40.34038, -86.56423

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length128.9 ft (39.3 m)
Max Span124.7 ft (38 m)
Deck Width28.9 ft (8.8 m)
Deck Area345.8 sq m
Main Spans1
Year Built1941 (reconstructed 2015)

Traffic

Avg Daily Traffic3,870 (2012)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure Number032210

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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