Structure 47059230001 · Knox County, TN

Nfa 5923 over Beaver Creek

Carries Nfa 5923 over Beaver Creek, Karns Valley Drive.

Overall conditionGood

Set by its lowest-rated component: Deck at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructure8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT255 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 8/9

255 ft end to end, longest span 125 ft: about 4 semi-trucks nose to tail. Lengths and the semi-truck 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.

Built20179 years old
Length254.9 ft77.7 m
Daily traffic2,990counted 2020
Last inspectedJune 2024every 24 months

Location

StateTennessee
CountyKnox
LocationKarns Valley Drive
CarriesNfa 5923
CrossesBeaver Creek
Coordinates35.97211, -84.13840

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length254.9 ft (77.7 m)
Max Span125.0 ft (38.1 m)
Deck Width45.9 ft (14 m)
Deck Area1087.8 sq m
Main Spans3
Year Built2017

Traffic

Avg Daily Traffic2,990 (2020)
Truck Traffic6%
Lanes On Bridge3

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number47059230001

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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