Structure 800A0390005 · Smith County, TN

Nfa A039 over Lankford Branch

Carries Nfa A039 over Lankford Branch, 1.7 Mi NE Jct Sr85&sr263.

Overall conditionGood

Set by its lowest-rated component: Culvert at 8 of 9.

How ratings work
Culvertsets the rating8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT37 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 8/9

A culvert 37 ft across with 3 openings. 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, so those are drawn as typical for a culvert.

Built20188 years old
Length37.1 ft11.3 m
Daily traffic470counted 2020
Last inspectedJune 2023every 24 months

Location

StateTennessee
CountySmith
Location1.7 Mi NE Jct Sr85&sr263
CarriesNfa A039
CrossesLankford Branch
Coordinates36.33351, -85.91473

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length37.1 ft (11.3 m)
Max Span15.7 ft (4.8 m)
Deck Width24.6 ft (7.5 m)
Deck Area84.8 sq m
Main Spans3
Year Built2018

Traffic

Avg Daily Traffic470 (2020)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number800A0390005

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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