Structure 76514 · Decatur County, IN

CR 250 N over I-74 Michigan & Frontage

Carries CR 250 N over I-74 Michigan & Frontage, 01.20 W US 421.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT634 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 8/9

634 ft end to end, longest span 145 ft: about 1.8 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 tee-beam bridge.

Built200818 years old
Length633.5 ft193.1 m
Daily traffic2,500counted 2014
Last inspectedMarch 2024every 24 months

Location

StateIndiana
CountyDecatur
Location01.20 W US 421
CarriesCR 250 N
CrossesI-74 Michigan & Frontage
Coordinates39.37384, -85.53308

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignTee Beam
Total Length633.5 ft (193.1 m)
Max Span144.7 ft (44.1 m)
Deck Width46.3 ft (14.1 m)
Deck Area2722.7 sq m
Main Spans5
Year Built2008

Traffic

Avg Daily Traffic2,500 (2014)
Truck Traffic10%
Lanes On Bridge2
Lanes Under Bridge8

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number076514

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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