Structure 80530 · Carroll County, IN

SR 25 NB over Deer Creek

Carries SR 25 NB over Deer Creek, 01.96 N US 421.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT507 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

507 ft end to end, longest span 135 ft: about 7 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 tee-beam bridge.

Built201313 years old
Length506.9 ft154.5 m
Daily traffic4,700counted 2006
Last inspectedMarch 2023every 24 months

Location

StateIndiana
CountyCarroll
Location01.96 N US 421
CarriesSR 25 NB
CrossesDeer Creek
Coordinates40.59112, -86.65308

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignTee Beam
Total Length506.9 ft (154.5 m)
Max Span134.8 ft (41.1 m)
Deck Width56.4 ft (17.2 m)
Deck Area2657.4 sq m
Main Spans5
Year Built2013

Traffic

Avg Daily Traffic4,700 (2006)
Truck Traffic15%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number080530

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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