Structure 8000689 · Union County, OH

US 33 over Flat Branch

Carries US 33 over Flat Branch, 0.43mi S Of Sr739.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT94 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

94 ft end to end, longest span 35 ft. 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 slab bridge.

Built198739 years old
Length93.5 ft28.5 m
Daily traffic15,485counted 2018
Last inspectedMarch 2024every 12 months

Location

StateOhio
CountyUnion
Location0.43mi S Of Sr739
CarriesUS 33
CrossesFlat Branch
Coordinates40.27805, -83.54024

Physical Characteristics

MaterialConcrete Continuous
DesignSlab
Total Length93.5 ft (28.5 m)
Max Span35.1 ft (10.7 m)
Deck Width40.0 ft (12.2 m)
Deck Area347.7 sq m
Main Spans3
Year Built1987

Traffic

Avg Daily Traffic15,485 (2018)
Truck Traffic14%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 12 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number8000689

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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