Structure 800A2330001 · Smith County, TN

Nfa A233 over Plunkett Creek

Carries Nfa A233 over Plunkett Creek, 3.7 Mi SW Jct Sr25&sr80.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT113 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 6/9 · sets the rating

113 ft end to end, longest span 23 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 tee-beam bridge.

Built1923103 years old
Length112.9 ft34.4 m
Daily traffic70counted 2020
Last inspectedJune 2023every 24 months

Location

StateTennessee
CountySmith
Location3.7 Mi SW Jct Sr25&sr80
CarriesNfa A233
CrossesPlunkett Creek
Coordinates36.26178, -86.04947

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length112.9 ft (34.4 m)
Max Span23.0 ft (7 m)
Deck Width21.7 ft (6.6 m)
Deck Area227.0 sq m
Main Spans5
Year Built1923

Traffic

Avg Daily Traffic70 (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 Number800A2330001

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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