Structure 2103540 · Delaware County, OH

SR 521 over Over I-71

Carries SR 521 over Over I-71, 2.98 Mi W Of Sr61.

Overall conditionGood

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

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT385 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

385 ft end to end, longest span 111 ft: about 5 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.

Built1959rebuilt 1988
Length384.5 ft117.2 m
Daily traffic1,759counted 2015
Last inspectedNovember 2024every 24 months

Location

StateOhio
CountyDelaware
Location2.98 Mi W Of Sr61
CarriesSR 521
CrossesOver I-71
Coordinates40.32573, -82.89804

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length384.5 ft (117.2 m)
Max Span111.2 ft (33.9 m)
Deck Width35.4 ft (10.8 m)
Deck Area1265.8 sq m
Main Spans4
Year Built1959 (reconstructed 1988)

Traffic

Avg Daily Traffic1,759 (2015)
Truck Traffic11%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number2103540

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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