Structure 57015810021 · Madison County, TN

Nfa 872 (sa 5733) over Middle Fork Forked Deer

Carries Nfa 872 (sa 5733) over Middle Fork Forked Deer, 3.2 Mi SW Jct Sr1&sr152.

Overall conditionPoor

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

How ratings work
Deck5/9 · Fair
Superstructure6/9 · Satisfactory
Substructuresets the rating4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT199 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 6/9Substructure 4/9 · sets the rating

199 ft end to end, longest span 29 ft: about 3 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 tee-beam bridge.

Built197056 years old
Length199.5 ft60.8 m
Daily traffic1,829counted 2021
Last inspectedMay 2023every 24 months

Location

StateTennessee
CountyMadison
Location3.2 Mi SW Jct Sr1&sr152
CarriesNfa 872 (sa 5733)
CrossesMiddle Fork Forked Deer
Coordinates35.75758, -88.73953

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length199.5 ft (60.8 m)
Max Span28.5 ft (8.7 m)
Deck Width28.5 ft (8.7 m)
Deck Area529.0 sq m
Main Spans7
Year Built1970

Traffic

Avg Daily Traffic1,829 (2021)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical4 — Foundations need monitoring
Structure Number57015810021

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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