Structure 68017880003 · Perry County, TN

Nfa 1788 (sa 6803) over Buffalo River

Carries Nfa 1788 (sa 6803) over Buffalo River, 8 M. N. Flatwoods..

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT746 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

746 ft end to end, longest span 96 ft: about 2.1 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.

Built196858 years old
Length746.1 ft227.4 m
Daily traffic298counted 2021
Last inspectedMay 2023every 24 months

Location

StateTennessee
CountyPerry
Location8 M. N. Flatwoods.
CarriesNfa 1788 (sa 6803)
CrossesBuffalo River
Coordinates35.54467, -87.81993

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length746.1 ft (227.4 m)
Max Span96.1 ft (29.3 m)
Deck Width28.2 ft (8.6 m)
Deck Area1955.6 sq m
Main Spans11
Year Built1968

Traffic

Avg Daily Traffic298 (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 Critical3 — Scour critical
Structure Number68017880003

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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