Structure 58SR0270009 · Marion County, TN

Nfa 1131 over Little Sequatchie River

Carries Nfa 1131 over Little Sequatchie River, .78 Mi.n.e.of Jasper.

Overall conditionFair

Set by its lowest-rated component: Deck and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT287 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 6/9 · sets the rating

287 ft end to end, longest span 41 ft: about 4 semi-trucks nose to tail. Lengths and the semi-truck 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 tee-beam bridge.

Built1925rebuilt 2011
Length287.1 ft87.5 m
Daily traffic1,883counted 2021
Last inspectedSeptember 2024every 24 months

Location

StateTennessee
CountyMarion
Location.78 Mi.n.e.of Jasper
CarriesNfa 1131
CrossesLittle Sequatchie River
Coordinates35.12939, -85.58660

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length287.1 ft (87.5 m)
Max Span41.0 ft (12.5 m)
Deck Width30.2 ft (9.2 m)
Deck Area805 sq m
Main Spans7
Year Built1925 (reconstructed 2011)

Traffic

Avg Daily Traffic1,883 (2021)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number58SR0270009

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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