Structure 4631137 · Logan County, OH

CR 13 over Great Miami River

Carries CR 13 over Great Miami River, .08 M E Of Tr 59.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 6 of 9.

How ratings work
Deck9/9 · Excellent
Superstructuresets the rating6/9 · Satisfactory
Substructure8/9 · Very Good
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT135 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 6/9 · sets the ratingSubstructure 8/9

135 ft end to end, longest span 92 ft. 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 through truss.

Built1876rebuilt 2000
Length134.8 ft41.1 m
Daily traffic194counted 2015
Last inspectedDecember 2024every 12 months

Location

StateOhio
CountyLogan
Location.08 M E Of Tr 59
CarriesCR 13
CrossesGreat Miami River
Coordinates40.40111, -83.92444

Physical Characteristics

MaterialWood or Timber
DesignTruss - Thru
Total Length134.8 ft (41.1 m)
Max Span91.9 ft (28 m)
Deck Width15.4 ft (4.7 m)
Deck Area193.2 sq m
Main Spans3
Year Built1876 (reconstructed 2000)

Traffic

Avg Daily Traffic194 (2015)
Truck Traffic8%
Lanes On Bridge1

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is on the National Register of Historic Places
Scour Critical5 — Stable for scour
Structure Number4631137

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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