Structure 50A0730003 · Blount County, TN

Nfa A073 over Lackey Creek

Carries Nfa A073 over Lackey Creek, NW Of Us321 At Maryville.

Overall conditionFair

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

How ratings work
Culvertsets the rating5/9 · Fair
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT60 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 5/9

A culvert 60 ft across with 2 openings. 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, so those are drawn as typical for a culvert.

Built1925101 years old
Length60.0 ft18.3 m
Daily traffic120counted 2020
Last inspectedNovember 2023every 24 months

Location

StateTennessee
CountyBlount
LocationNW Of Us321 At Maryville
CarriesNfa A073
CrossesLackey Creek
Coordinates35.78876, -84.04330

Physical Characteristics

MaterialConcrete Continuous
DesignCulvert
Total Length60.0 ft (18.3 m)
Max Span27.9 ft (8.5 m)
Deck Width16.7 ft (5.1 m)
Deck Area93.3 sq m
Main Spans2
Year Built1925

Traffic

Avg Daily Traffic120 (2020)
Truck Traffic2%
Lanes On Bridge1

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical8 — Stable, low risk
Structure Number050A0730003

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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