Structure 23SR0030027 · Dyer County, TN

Nfa A268 over Biffle Rd. / SR 3

Carries Nfa A268 over Biffle Rd. / SR 3, 0.5 M NE Jct Sr3&sr77.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT338 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 6/9 · sets the rating

338 ft end to end, longest span 128 ft: about 5 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 box-beam bridge.

Built197947 years old
Length337.9 ft103 m
Daily traffic240counted 2020
Last inspectedOctober 2023every 24 months

Location

StateTennessee
CountyDyer
Location0.5 M NE Jct Sr3&sr77
CarriesNfa A268
CrossesBiffle Rd. / SR 3
Coordinates36.12691, -89.27527

Physical Characteristics

MaterialConcrete Continuous
DesignBox Beam - Single/Spread
Total Length337.9 ft (103 m)
Max Span128.0 ft (39 m)
Deck Width36.1 ft (11 m)
Deck Area1,133 sq m
Main Spans3
Year Built1979

Traffic

Avg Daily Traffic240 (2020)
Truck Traffic7%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number23SR0030027

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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