Structure 180A6450001 · Cumberland County, TN

Nfa A645 over Sequatchie River

Carries Nfa A645 over Sequatchie River, 1 Mile East Of Us-127.

Overall conditionPoor

Set by its lowest-rated component: Deck and Substructure at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructure5/9 · Fair
Substructuresets the rating4/9 · Poor
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
23 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 5/9Substructure 4/9 · sets the rating

23 ft end to end. Lengths are drawn to scale; at this length a semi-truck would be a speck. 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.

Built197452 years old
Length23.3 ft7.1 m
Daily traffic100counted 2022
Last inspectedFebruary 2024every 24 months

Location

StateTennessee
CountyCumberland
Location1 Mile East Of Us-127
CarriesNfa A645
CrossesSequatchie River
Coordinates35.79150, -85.00931

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length23.3 ft (7.1 m)
Max Span23.3 ft (7.1 m)
Deck Width13.5 ft (4.1 m)
Deck Area29.1 sq m
Main Spans1
Year Built1974

Traffic

Avg Daily Traffic100 (2022)
Truck Traffic1%
Lanes On Bridge1

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 24 months
OwnerState Park/Forest Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number180A6450001

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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