Structure 2506786 · Franklin County, OH

Ir 71 over Big Darby Creek

Carries Ir 71 over Big Darby Creek, 1.53 Mi N Of Pickaway Co..

Overall conditionGood

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

How ratings work
Decksets the rating9/9 · Excellent
Superstructuresets the rating9/9 · Excellent
Substructuresets the rating9/9 · Excellent
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT311 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 9/9

311 ft end to end, longest span 155 ft: about 4 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.

Built20206 years old
Length311.4 ft94.9 m
Daily traffic21,350counted 2018
Last inspectedApril 2023every 24 months

Location

StateOhio
CountyFranklin
Location1.53 Mi N Of Pickaway Co.
CarriesIr 71
CrossesBig Darby Creek
Coordinates39.82118, -83.16978

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length311.4 ft (94.9 m)
Max Span154.9 ft (47.2 m)
Deck Width67.3 ft (20.5 m)
Deck Area1945.5 sq m
Main Spans2
Year Built2020

Traffic

Avg Daily Traffic21,350 (2018)
Truck Traffic22%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number2506786

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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