Structure 4230876 · Knox County, OH

Johnstown Road over Dry Creek

Carries Johnstown Road over Dry Creek, 0.2 Mi South Of US 36.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT77 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

77 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 through truss.

Built199927 years old
Length77.1 ft23.5 m
Daily traffic1,105counted 2015
Last inspectedMarch 2024every 12 months

Location

StateOhio
CountyKnox
Location0.2 Mi South Of US 36
CarriesJohnstown Road
CrossesDry Creek
Coordinates40.34950, -82.55203

Physical Characteristics

MaterialSteel
DesignTruss - Thru
Total Length77.1 ft (23.5 m)
Max Span75.1 ft (22.9 m)
Deck Width24.0 ft (7.3 m)
Deck Area171.6 sq m
Main Spans1
Year Built1999

Traffic

Avg Daily Traffic1,105 (2015)
Truck Traffic8%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number4230876

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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