Structure 45024530005 · Jefferson County, TN

Nfa 2453 (sa 4508) over Lewis Creek

Carries Nfa 2453 (sa 4508) over Lewis Creek, N Of Us11e-e Of Strawbery.

Overall conditionPoor

Set by its lowest-rated component: Deck and Superstructure and Substructure at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructuresets the rating4/9 · Poor
Substructuresets the rating4/9 · Poor
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT31 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9Superstructure 4/9Substructure 4/9

31 ft end to end, longest span 13 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 slab bridge.

Built193492 years old
Length30.5 ft9.3 m
Daily traffic402counted 2021
Last inspectedApril 2023every 24 months

Location

StateTennessee
CountyJefferson
LocationN Of Us11e-e Of Strawbery
CarriesNfa 2453 (sa 4508)
CrossesLewis Creek
Coordinates36.11522, -83.60188

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length30.5 ft (9.3 m)
Max Span13.1 ft (4 m)
Deck Width22.6 ft (6.9 m)
Deck Area64.2 sq m
Main Spans2
Year Built1934

Traffic

Avg Daily Traffic402 (2021)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical4 — Foundations need monitoring
Structure Number45024530005

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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