Structure 15400 · Benton County, IN

US 41 SB over US 52 EB Kb&s Rr

Carries US 41 SB over US 52 EB Kb&s Rr, 02.45 N SR 18.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure8/9 · Very Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT342 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 8/9Substructure 7/9

342 ft end to end, longest span 101 ft: about 5 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.

Built1966rebuilt 2009
Length342.2 ft104.3 m
Daily traffic3,121counted 2021
Last inspectedSeptember 2023every 24 months

Location

StateIndiana
CountyBenton
Location02.45 N SR 18
CarriesUS 41 SB
CrossesUS 52 EB Kb&s Rr
Coordinates40.65757, -87.38050

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length342.2 ft (104.3 m)
Max Span101.0 ft (30.8 m)
Deck Width42.7 ft (13 m)
Deck Area1355.9 sq m
Main Spans4
Year Built1966 (reconstructed 2009)

Traffic

Avg Daily Traffic3,121 (2021)
Truck Traffic44%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number015400

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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