Structure 2502887 · Franklin County, OH

US 62 over Big Darby Overflow

Carries US 62 over Big Darby Overflow, 0.34 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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT262 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 9/9

262 ft end to end, longest span 47 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.

Built195571 years old
Length262.1 ft79.9 m
Daily traffic11,120counted 2010
Last inspectedJune 2023every 24 months

Location

StateOhio
CountyFranklin
Location0.34 Mi N Of Pickaway Co
CarriesUS 62
CrossesBig Darby Overflow
Coordinates39.81128, -83.15935

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length262.1 ft (79.9 m)
Max Span46.6 ft (14.2 m)
Deck Width34.4 ft (10.5 m)
Deck Area839.0 sq m
Main Spans7
Year Built1955

Traffic

Avg Daily Traffic11,120 (2010)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number2502887

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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