Structure 230A8290003 · Dyer County, TN

Nfa A829 over Ic Railroad

Carries Nfa A829 over Ic Railroad, 1.9 Mi NW Jct Sr20&sr104.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT121 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

121 ft end to end, longest span 75 ft. 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.

Built199828 years old
Length121.4 ft37 m
Daily traffic3,321counted 2021
Last inspectedOctober 2023every 24 months

Location

StateTennessee
CountyDyer
Location1.9 Mi NW Jct Sr20&sr104
CarriesNfa A829
CrossesIc Railroad
Coordinates36.03980, -89.35680

Physical Characteristics

MaterialPrestressed Concrete Continuous
DesignStringer/Multi-beam
Total Length121.4 ft (37 m)
Max Span75.5 ft (23 m)
Deck Width44.3 ft (13.5 m)
Deck Area499.5 sq m
Main Spans2
Year Built1998

Traffic

Avg Daily Traffic3,321 (2021)
Truck Traffic3%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number230A8290003

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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