Structure 460A0550001 · Johnson County, TN

Nfa A055 over Doe Creek

Carries Nfa A055 over Doe Creek, W Off Sr67-n Of Sr167.

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 overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT56 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

56 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 rigid-frame bridge.

Built20224 years old
Length56.1 ft17.1 m
Daily traffic120counted 2020
Last inspectedApril 2024every 24 months

Location

StateTennessee
CountyJohnson
LocationW Off Sr67-n Of Sr167
CarriesNfa A055
CrossesDoe Creek
Coordinates36.41905, -81.95055

Physical Characteristics

MaterialConcrete
DesignFrame
Total Length56.1 ft (17.1 m)
Max Span52.8 ft (16.1 m)
Deck Width31.5 ft (9.6 m)
Deck Area164.2 sq m
Main Spans1
Year Built2022

Traffic

Avg Daily Traffic120 (2020)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number460A0550001

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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