Structure 180B3730001 · Cumberland County, TN

Nfa B373 over Lake Canterbury Overflow

Carries Nfa B373 over Lake Canterbury Overflow, In Fairfield Glade.

Overall conditionFair

Set by its lowest-rated component: Superstructure at 5 of 9.

How ratings work
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT46 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 5/9 · sets the ratingSubstructure 6/9

46 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 multi-beam bridge.

Built198046 years old
Length45.6 ft13.9 m
Daily traffic50counted 2020
Last inspectedMay 2024every 24 months

Location

StateTennessee
CountyCumberland
LocationIn Fairfield Glade
CarriesNfa B373
CrossesLake Canterbury Overflow
Coordinates35.99805, -84.91161

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length45.6 ft (13.9 m)
Max Span43.0 ft (13.1 m)
Deck Width24.3 ft (7.4 m)
Deck Area102.9 sq m
Main Spans1
Year Built1980

Traffic

Avg Daily Traffic50 (2020)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number180B3730001

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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