Structure 32006 · Jefferson County, IN

US 421 over Ohio R High & Front ST

Carries US 421 over Ohio R High & Front ST, 00.42 S Of SR 56.

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 overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT3,142 FT OVERALL500 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

3,142 ft end to end, longest span 727 ft: about 8.7 football fields. 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.

Built201412 years old
Length3142.4 ft957.8 m
Daily traffic8,853counted 2016
Last inspectedAugust 2023every 24 months

Location

StateIndiana
CountyJefferson
Location00.42 S Of SR 56
CarriesUS 421
CrossesOhio R High & Front ST
Coordinates38.72861, -85.37000

Physical Characteristics

MaterialSteel Continuous
DesignTruss - Thru
Total Length3142.4 ft (957.8 m)
Max Span727.0 ft (221.6 m)
Deck Width43.0 ft (13.1 m)
Deck Area12547.2 sq m
Main Spans4
Year Built2014

Traffic

Avg Daily Traffic8,853 (2016)
Truck Traffic8%
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 Critical8 — Stable, low risk
Structure Number032006

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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