Structure 66SR0050007 · Obion County, TN

Fap 5 over Overflow

Carries Fap 5 over Overflow, 6 Mi.nw.of Kenton.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT508 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

508 ft end to end, longest span 57 ft: about 7 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.

Built196858 years old
Length507.9 ft154.8 m
Daily traffic3,114counted 2021
Last inspectedMarch 2023every 24 months

Location

StateTennessee
CountyObion
Location6 Mi.nw.of Kenton
CarriesFap 5
CrossesOverflow
Coordinates36.28472, -89.06639

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length507.9 ft (154.8 m)
Max Span57.1 ft (17.4 m)
Deck Width45.9 ft (14 m)
Deck Area2167.2 sq m
Main Spans9
Year Built1968

Traffic

Avg Daily Traffic3,114 (2021)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number66SR0050007

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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