Structure 920A1170001 · Weakley County, TN

Nfa A117 over Mud Creek

Carries Nfa A117 over Mud Creek, 1 Mi N Of Sr54.

Overall conditionGood

Set by its lowest-rated component: Substructure at 7 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT49 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 7/9 · sets the rating

49 ft end to end, longest span 16 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.

Built200422 years old
Length48.9 ft14.9 m
Daily traffic130counted 2020
Last inspectedOctober 2024every 24 months

Location

StateTennessee
CountyWeakley
Location1 Mi N Of Sr54
CarriesNfa A117
CrossesMud Creek
Coordinates36.30431, -88.68117

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length48.9 ft (14.9 m)
Max Span16.1 ft (4.9 m)
Deck Width25.9 ft (7.9 m)
Deck Area117.7 sq m
Main Spans3
Year Built2004

Traffic

Avg Daily Traffic130 (2020)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number920A1170001

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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