Structure 7153236 · Ross County, OH

Co RD 550 over Old Town Run

Carries Co RD 550 over Old Town Run, .20 Mi. E Of Westfall RD.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT51 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

51 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.

Built197848 years old
Length50.9 ft15.5 m
Daily traffic3,075counted 2015
Last inspectedDecember 2024every 12 months

Location

StateOhio
CountyRoss
Location.20 Mi. E Of Westfall RD
CarriesCo RD 550
CrossesOld Town Run
Coordinates39.40007, -83.16821

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length50.9 ft (15.5 m)
Max Span46.9 ft (14.3 m)
Deck Width24.6 ft (7.5 m)
Deck Area116.2 sq m
Main Spans1
Year Built1978

Traffic

Avg Daily Traffic3,075 (2015)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number7153236

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.

Nearby Bridges