Structure 430A3020001 · Humphreys County, TN

Nfa A099 over South Fork Blue Creek

Carries Nfa A099 over South Fork Blue Creek, 0.2 M. N. Of I40.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT102 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

102 ft end to end, longest span 51 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 tee-beam bridge.

Built196858 years old
Length102.0 ft31.1 m
Daily traffic20counted 2020
Last inspectedNovember 2023every 24 months

Location

StateTennessee
CountyHumphreys
Location0.2 M. N. Of I40
CarriesNfa A099
CrossesSouth Fork Blue Creek
Coordinates35.86424, -87.90797

Physical Characteristics

MaterialConcrete
DesignTee Beam
Total Length102.0 ft (31.1 m)
Max Span50.9 ft (15.5 m)
Deck Width16.1 ft (4.9 m)
Deck Area152.4 sq m
Main Spans2
Year Built1968

Traffic

Avg Daily Traffic20 (2020)
Truck Traffic4%
Lanes On Bridge1

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalUnknown
Structure Number430A3020001

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