Structure 430A2700001 · Humphreys County, TN

Nfa A270 over Trace Creek

Carries Nfa A270 over Trace Creek, 0.5 M. S US 70.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT110 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 8/9

110 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.

Built201214 years old
Length109.9 ft33.5 m
Daily traffic30counted 2020
Last inspectedSeptember 2023every 24 months

Location

StateTennessee
CountyHumphreys
Location0.5 M. S US 70
CarriesNfa A270
CrossesTrace Creek
Coordinates36.08417, -87.75355

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length109.9 ft (33.5 m)
Max Span109.9 ft (33.5 m)
Deck Width16.1 ft (4.9 m)
Deck Area164.2 sq m
Main Spans1
Year Built2012

Traffic

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

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number430A2700001

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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