Structure 470D3510001 · Knox County, TN

Nfa D351 over Tabler Branch

Carries Nfa D351 over Tabler Branch, Wolfe Rd-se Of Sr131&co L.

Overall conditionFair

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

How ratings work
Culvertsets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT25 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 5/9

A culvert 25 ft across with 2 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.

Built196561 years old
Length25.3 ft7.7 m
Daily traffic200counted 2020
Last inspectedMay 2024every 24 months

Location

StateTennessee
CountyKnox
LocationWolfe Rd-se Of Sr131&co L
CarriesNfa D351
CrossesTabler Branch
Coordinates36.15473, -83.82100

Physical Characteristics

MaterialSteel
DesignCulvert
Total Length25.3 ft (7.7 m)
Max Span10.2 ft (3.1 m)
Deck Area33.1 sq m
Main Spans2
Year Built1965

Traffic

Avg Daily Traffic200 (2020)
Truck Traffic2%
Lanes On Bridge1

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number470D3510001

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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