Structure 540A1960001 · McMinn County, TN

Nfa A196 over Conasauga Creek

Carries Nfa A196 over Conasauga Creek, 4mi East Of Us411.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck7/9 · Good
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT47 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9Substructure 4/9 · sets the rating

47 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 multi-beam bridge.

Built193096 years old
Length46.9 ft14.3 m
Daily traffic30counted 2020
Last inspectedAugust 2023every 24 months

Location

StateTennessee
CountyMcMinn
Location4mi East Of Us411
CarriesNfa A196
CrossesConasauga Creek
Coordinates35.32067, -84.47400

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length46.9 ft (14.3 m)
Max Span43.0 ft (13.1 m)
Deck Width16.7 ft (5.1 m)
Deck Area72.9 sq m
Main Spans1
Year Built1930

Traffic

Avg Daily Traffic30 (2020)
Truck Traffic2%
Lanes On Bridge1

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalUnknown
Structure Number540A1960001

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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