Structure 1403966 · Clinton County, OH

SR 730 over Cowan Creek

Carries SR 730 over Cowan Creek, 0.81 Mi N Of SR 350.

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 FT188 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

188 ft end to end, longest span 70 ft: about 3 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.

Built1953rebuilt 2005
Length188.0 ft57.3 m
Daily traffic2,481counted 2015
Last inspectedJuly 2023every 24 months

Location

StateOhio
CountyClinton
Location0.81 Mi N Of SR 350
CarriesSR 730
CrossesCowan Creek
Coordinates39.38899, -83.92653

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length188.0 ft (57.3 m)
Max Span69.9 ft (21.3 m)
Deck Width33.5 ft (10.2 m)
Deck Area584.5 sq m
Main Spans3
Year Built1953 (reconstructed 2005)

Traffic

Avg Daily Traffic2,481 (2015)
Truck Traffic4%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number1403966

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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