Structure 460A2970005 · Johnson County, TN

Nfa A302 over Forge Creek

Carries Nfa A302 over Forge Creek, S Of Sr167 E Of Mtn City.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 3 of 9.

How ratings work
Deck5/9 · Fair
Superstructure6/9 · Satisfactory
Substructuresets the rating3/9 · Serious
Channelnot part of overall4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT47 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9Superstructure 6/9Substructure 3/9 · sets the rating

47 ft end to end, longest span 21 ft. 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.

Built197848 years old
Length46.9 ft14.3 m
Daily traffic70counted 2020
Last inspectedApril 2024every 24 months

Location

StateTennessee
CountyJohnson
LocationS Of Sr167 E Of Mtn City
CarriesNfa A302
CrossesForge Creek
Coordinates36.45426, -81.75518

Physical Characteristics

MaterialConcrete
DesignSlab
Total Length46.9 ft (14.3 m)
Max Span21.0 ft (6.4 m)
Deck Width26.2 ft (8 m)
Deck Area114.4 sq m
Main Spans2
Year Built1978

Traffic

Avg Daily Traffic70 (2020)
Truck Traffic6%
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical4 — Foundations need monitoring
Structure Number460A2970005

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.

Nearby Bridges