Structure 4230493 · Knox County, OH

Old Mansfield over Isaacs Run

Carries Old Mansfield over Isaacs Run, 0.2 Mi S Of SR 95.

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 overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT53 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 9/9Superstructure 9/9Substructure 9/9

53 ft end to end. Lengths and the car 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 box-beam bridge.

Built201115 years old
Length53.1 ft16.2 m
Daily traffic298counted 2018
Last inspectedApril 2024every 24 months

Location

StateOhio
CountyKnox
Location0.2 Mi S Of SR 95
CarriesOld Mansfield
CrossesIsaacs Run
Coordinates40.51792, -82.50235

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length53.1 ft (16.2 m)
Max Span48.9 ft (14.9 m)
Deck Width27.9 ft (8.5 m)
Deck Area137.7 sq m
Main Spans1
Year Built2011

Traffic

Avg Daily Traffic298 (2018)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number4230493

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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