Structure 4650964 · Logan County, OH

Tr 221 over Harlem Ditch

Carries Tr 221 over Harlem Ditch, 0.37 Mi. East Of Tr 99.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck9/9 · Excellent
Superstructure8/9 · Very Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
24 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 8/9Substructure 5/9 · sets the rating

24 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built1910rebuilt 1989
Length24.0 ft7.3 m
Daily traffic64counted 2015
Last inspectedDecember 2024every 12 months

Location

StateOhio
CountyLogan
Location0.37 Mi. East Of Tr 99
CarriesTr 221
CrossesHarlem Ditch
Coordinates40.43760, -83.82273

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length24.0 ft (7.3 m)
Max Span22.0 ft (6.7 m)
Deck Width16.1 ft (4.9 m)
Deck Area35.8 sq m
Main Spans1
Year Built1910 (reconstructed 1989)

Traffic

Avg Daily Traffic64 (2015)
Truck Traffic8%
Lanes On Bridge1

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number4650964

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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