Structure 79I00400164 · Shelby County, TN

I40-ll-exit-ramp over I40-wb-ex Rp / N 3rd St.

Carries I40-ll-exit-ramp over I40-wb-ex Rp / N 3rd St., I40 / SR 3 Jct.

Overall conditionPoor

Set by its lowest-rated component: Deck at 4 of 9.

How ratings work
Decksets the rating4/9 · Poor
Superstructure7/9 · Good
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT209 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 4/9 · sets the ratingSuperstructure 7/9Substructure 6/9

209 ft end to end, longest span 89 ft: about 3 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 multi-beam bridge.

Built197353 years old
Length208.7 ft63.6 m
Daily traffic—reported figure implausible
Last inspectedOctober 2024every 24 months

Location

StateTennessee
CountyShelby
LocationI40 / SR 3 Jct
CarriesI40-ll-exit-ramp
CrossesI40-wb-ex Rp / N 3rd St.
Coordinates35.15333, -90.04714

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length208.7 ft (63.6 m)
Max Span89.2 ft (27.2 m)
Deck Width32.2 ft (9.8 m)
Deck Area623.3 sq m
Main Spans3
Year Built1973

Traffic

Avg Daily Traffic53,211 (2021)
That is about 53,211 vehicles per lane per day — beyond what any U.S. road carries (the busiest freeways run about 25,000–30,000). It is almost certainly a data-entry error in the National Bridge Inventory, so we leave this bridge out of traffic rankings.
Truck Traffic8%
Lanes On Bridge1
Lanes Under Bridge4

Inspection & Ownership

Last InspectionOctober 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number79I00400164

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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