Structure 12S80580003 · Chester County, TN

Nfa 926 (sa 1212) over Overflow

Carries Nfa 926 (sa 1212) over Overflow, 2.6 Mi NW Jct Sr200&sr365.

Overall conditionGood

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

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT330 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

330 ft end to end, longest span 110 ft: about 5 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 multi-beam bridge.

Built200224 years old
Length330.1 ft100.6 m
Daily traffic882counted 2021
Last inspectedJune 2023every 24 months

Location

StateTennessee
CountyChester
Location2.6 Mi NW Jct Sr200&sr365
CarriesNfa 926 (sa 1212)
CrossesOverflow
Coordinates35.48375, -88.64725

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length330.1 ft (100.6 m)
Max Span110.2 ft (33.6 m)
Deck Width34.1 ft (10.4 m)
Deck Area1046.2 sq m
Main Spans3
Year Built2002

Traffic

Avg Daily Traffic882 (2021)
Truck Traffic1%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical7 — Countermeasures installed
Structure Number12S80580003

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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