Structure 700094 · Brown County, IN

Doty Road over Mount Liberty Creek

Carries Doty Road over Mount Liberty Creek, 0.1 Mi S Of Mt Liberty RD.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT39 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 5/9

39 ft end to end. Lengths and the car 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.

Built197947 years old
Length38.7 ft11.8 m
Daily traffic10counted 2024
Last inspectedOctober 2024every 12 months

Location

StateIndiana
CountyBrown
Location0.1 Mi S Of Mt Liberty RD
CarriesDoty Road
CrossesMount Liberty Creek
Coordinates39.18332, -86.14091

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length38.7 ft (11.8 m)
Max Span37.4 ft (11.4 m)
Deck Width11.5 ft (3.5 m)
Deck Area41.3 sq m
Main Spans1
Year Built1979

Traffic

Avg Daily Traffic10 (2024)
Truck Traffic10%
Lanes On Bridge1

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical7 — Countermeasures installed
Structure Number0700094

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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