Structure 410A0660005 · Hickman County, TN

Nfa A066 over Branch

Carries Nfa A066 over Branch, 5.2 M SE Of Bon Aqua.

Overall conditionGood

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

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT27 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 27 ft across. 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.

Built201412 years old
Length27.2 ft8.3 m
Daily traffic100counted 2020
Last inspectedAugust 2023every 24 months

Location

StateTennessee
CountyHickman
Location5.2 M SE Of Bon Aqua
CarriesNfa A066
CrossesBranch
Coordinates35.90994, -87.22348

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length27.2 ft (8.3 m)
Max Span27.2 ft (8.3 m)
Deck Width26.9 ft (8.2 m)
Deck Area68.1 sq m
Main Spans1
Year Built2014

Traffic

Avg Daily Traffic100 (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 Number410A0660005

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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