Structure 520A3990001 · Lincoln County, TN

Nfa A399 over Branch

Carries Nfa A399 over Branch, 6 M. Sw. Fayetteville..

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT38 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

38 ft end to end, longest span 18 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 deck arch.

Built1924102 years old
Length38.1 ft11.6 m
Daily traffic150counted 2020
Last inspectedJuly 2023every 24 months

Location

StateTennessee
CountyLincoln
Location6 M. Sw. Fayetteville.
CarriesNfa A399
CrossesBranch
Coordinates35.10393, -86.66367

Physical Characteristics

MaterialMasonry
DesignArch - Deck
Total Length38.1 ft (11.6 m)
Max Span18.0 ft (5.5 m)
Deck Width16.1 ft (4.9 m)
Deck Area56.8 sq m
Main Spans2
Year Built1924

Traffic

Avg Daily Traffic150 (2020)
Truck Traffic2%
Lanes On Bridge1

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number520A3990001

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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