Structure 10A3030001 · Anderson County, TN

Nfa A303 over Branch

Carries Nfa A303 over Branch, S Of Us25w-2 M W Of Knox.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT42 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

42 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.

Built198442 years old
Length42.3 ft12.9 m
Daily traffic560counted 2020
Last inspectedJuly 2023every 24 months

Location

StateTennessee
CountyAnderson
LocationS Of Us25w-2 M W Of Knox
CarriesNfa A303
CrossesBranch
Coordinates36.03472, -84.10400

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length42.3 ft (12.9 m)
Max Span39.4 ft (12 m)
Deck Width24.3 ft (7.4 m)
Deck Area95.5 sq m
Main Spans1
Year Built1984

Traffic

Avg Daily Traffic560 (2020)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number010A3030001

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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