Structure 490A1100001 · Lauderdale County, TN

Nfa A110 over Branch

Carries Nfa A110 over Branch, 1.3 Mi. N. Of Ripley.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructuresets the rating7/9 · Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT85 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

85 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 box-beam bridge.

Built20197 years old
Length85.0 ft25.9 m
Daily traffic160counted 2020
Last inspectedNovember 2023every 24 months

Location

StateTennessee
CountyLauderdale
Location1.3 Mi. N. Of Ripley
CarriesNfa A110
CrossesBranch
Coordinates35.78792, -89.60117

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length85.0 ft (25.9 m)
Max Span85.0 ft (25.9 m)
Deck Width28.2 ft (8.6 m)
Deck Area222.7 sq m
Main Spans1
Year Built2019

Traffic

Avg Daily Traffic160 (2020)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number490A1100001

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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