Structure 57I00400037 · Madison County, TN

Nfa 872 (sa 5733) over Nfa 872 / I40

Carries Nfa 872 (sa 5733) over Nfa 872 / I40, 2 Mi West Of SR 1.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT297 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

297 ft end to end, longest span 154 ft: about 4 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built198640 years old
Length296.9 ft90.5 m
Daily traffic16,149counted 2021
Last inspectedApril 2023every 24 months

Location

StateTennessee
CountyMadison
Location2 Mi West Of SR 1
CarriesNfa 872 (sa 5733)
CrossesNfa 872 / I40
Coordinates35.67883, -88.78044

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length296.9 ft (90.5 m)
Max Span153.9 ft (46.9 m)
Deck Width50.9 ft (15.5 m)
Deck Area1402.8 sq m
Main Spans2
Year Built1986

Traffic

Avg Daily Traffic16,149 (2021)
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number57I00400037

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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