Structure 440A0740003 · Jackson County, TN

Nfa A074 over Crabtree Creek

Carries Nfa A074 over Crabtree Creek, 3mi North Of Sr56.

Overall conditionFair

Set by its lowest-rated component: Superstructure and Substructure at 5 of 9.

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructuresets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT26 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 5/9 · sets the rating

26 ft end to end. 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 multi-beam bridge.

Built195076 years old
Length25.6 ft7.8 m
Daily traffic30counted 2020
Last inspectedAugust 2023every 24 months

Location

StateTennessee
CountyJackson
Location3mi North Of Sr56
CarriesNfa A074
CrossesCrabtree Creek
Coordinates36.48807, -85.75312

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length25.6 ft (7.8 m)
Max Span23.6 ft (7.2 m)
Deck Width11.8 ft (3.6 m)
Deck Area28.1 sq m
Main Spans1
Year Built1950

Traffic

Avg Daily Traffic30 (2020)
Truck Traffic2%
Lanes On Bridge1

Inspection & Ownership

Last InspectionAugust 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number440A0740003

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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