Structure 80406000003081 · Johnson County, TN

Nfsr 298 over Doe Creek

Carries Nfsr 298 over Doe Creek, Entrance Sink Mt.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT119 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

119 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 slab bridge.

Built196363 years old
Length119.1 ft36.3 m
Daily traffic20counted 1990
Last inspectedMarch 2024every 24 months

Location

StateTennessee
CountyJohnson
LocationEntrance Sink Mt
CarriesNfsr 298
CrossesDoe Creek
Coordinates36.37934, -81.94298

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length119.1 ft (36.3 m)
Max Span68.9 ft (21 m)
Deck Width24.0 ft (7.3 m)
Deck Area265.0 sq m
Main Spans1
Year Built1963

Traffic

Avg Daily Traffic20 (1990)
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2024
Inspection FrequencyEvery 24 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical5 — Stable for scour
Structure Number080406000003081

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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