Structure AFTNANZY00002 · Franklin County, TN

Etf Bridge over Equipment

Carries Etf Bridge over Equipment, 335 Feet North Of S. Four.

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
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT102 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

102 ft end to end, longest span 22 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 tee-beam bridge.

Built196066 years old
Length102.0 ft31.1 m
Daily traffic10counted 2020
Last inspectedDecember 2024every 24 months

Location

StateTennessee
CountyFranklin
Location335 Feet North Of S. Four
CarriesEtf Bridge
CrossesEquipment
Coordinates35.37949, -86.04724

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length102.0 ft (31.1 m)
Max Span22.0 ft (6.7 m)
Deck Width32.8 ft (10 m)
Deck Area311 sq m
Main Spans5
Year Built1960

Traffic

Avg Daily Traffic10 (2020)
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2024
Inspection FrequencyEvery 24 months
OwnerAir Force
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure NumberAFTNANZY00002

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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