Structure 57SR0200017 · Madison County, TN

Fau 20 over Nfa A050 & Branch

Carries Fau 20 over Nfa A050 & Branch, In The City Of Jackson.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,585 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

1,585 ft end to end, longest span 209 ft: about 4.4 football fields. 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.

Built199135 years old
Length1585.3 ft483.2 m
Daily traffic12,522counted 2021
Last inspectedMay 2023every 24 months

Location

StateTennessee
CountyMadison
LocationIn The City Of Jackson
CarriesFau 20
CrossesNfa A050 & Branch
Coordinates35.66731, -88.89408

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1585.3 ft (483.2 m)
Max Span208.7 ft (63.6 m)
Deck Width44.6 ft (13.6 m)
Deck Area6571.5 sq m
Main Spans4
Year Built1991

Traffic

Avg Daily Traffic12,522 (2021)
Truck Traffic9%
Lanes On Bridge2
Lanes Under Bridge2

Inspection & Ownership

Last InspectionMay 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number57SR0200017

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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