Structure 18180 · Knox County, IN

Old SR 67 over US 50 Eb/wb

Carries Old SR 67 over US 50 Eb/wb, 00.59 W US 41.

Overall conditionGood

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

How ratings work
Deck9/9 · Excellent
Superstructure9/9 · Excellent
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT233 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 7/9 · sets the rating

233 ft end to end, longest span 74 ft: about 3 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.

Built1961rebuilt 2021
Length232.9 ft71 m
Daily traffic4,168counted 2021
Last inspectedAugust 2023every 24 months

Location

StateIndiana
CountyKnox
Location00.59 W US 41
CarriesOld SR 67
CrossesUS 50 Eb/wb
Coordinates38.70272, -87.49739

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length232.9 ft (71 m)
Max Span73.8 ft (22.5 m)
Deck Width36.7 ft (11.2 m)
Deck Area795.2 sq m
Main Spans4
Year Built1961 (reconstructed 2021)

Traffic

Avg Daily Traffic4,168 (2021)
Truck Traffic5%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number018180

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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