Structure 790B5900001 · Shelby County, TN

Nfa M340 over Channel 3 DR / Riverside

Carries Nfa M340 over Channel 3 DR / Riverside, Channel 3 Dr-memphis.

Overall conditionPoor

Set by its lowest-rated component: Superstructure and Substructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructuresets the rating4/9 · Poor
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT88 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 4/9 · sets the rating

88 ft end to end, longest span 44 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 multi-beam bridge.

Built194878 years old
Length87.9 ft26.8 m
Daily traffic480counted 2020
Last inspectedJanuary 2025every 24 months

Location

StateTennessee
CountyShelby
LocationChannel 3 Dr-memphis
CarriesNfa M340
CrossesChannel 3 DR / Riverside
Coordinates35.12703, -90.06680

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length87.9 ft (26.8 m)
Max Span44.0 ft (13.4 m)
Deck Width34.4 ft (10.5 m)
Deck Area281.4 sq m
Main Spans2
Year Built1948

Traffic

Avg Daily Traffic480 (2020)
Truck Traffic2%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionJanuary 2025
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number790B5900001

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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