Structure 790B5730001 · Shelby County, TN

Nfa E578 348606h over Bnsf & Csx Railroads

Carries Nfa E578 348606h over Bnsf & Csx Railroads, Dudley ST - Memphis.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT135 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

135 ft end to end. 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 deck arch.

Built1903123 years old
Length134.8 ft41.1 m
Daily traffic150counted 2020
Last inspectedMarch 2023every 24 months

Location

StateTennessee
CountyShelby
LocationDudley ST - Memphis
CarriesNfa E578 348606h
CrossesBnsf & Csx Railroads
Coordinates35.12464, -90.02950

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length134.8 ft (41.1 m)
Max Span111.9 ft (34.1 m)
Deck Width30.8 ft (9.4 m)
Deck Area386.3 sq m
Main Spans1
Year Built1903

Traffic

Avg Daily Traffic150 (2020)
Truck Traffic2%
Lanes On Bridge2

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is on the National Register of Historic Places
Scour CriticalNot applicable
Structure Number790B5730001

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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