Structure 79I00400168 · Shelby County, TN

I0040 over Sr1/i40 Wbl/ramp 12bf

Carries I0040 over Sr1/i40 Wbl/ramp 12bf, Ramp I40 WB To I40 WB.

Overall conditionGood

Set by its lowest-rated component: Deck and Substructure at 7 of 9.

How ratings work
Decksets the rating7/9 · Good
Superstructure8/9 · Very Good
Substructuresets the rating7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,565 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9 · sets the ratingSuperstructure 8/9Substructure 7/9 · sets the rating

1,565 ft end to end, longest span 224 ft: about 4.3 football fields. 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.

Built201610 years old
Length1565.0 ft477 m
Daily traffic96,170counted 2021
Last inspectedMarch 2023every 24 months

Location

StateTennessee
CountyShelby
LocationRamp I40 WB To I40 WB
CarriesI0040
CrossesSr1/i40 Wbl/ramp 12bf
Coordinates35.15413, -89.88782

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length1565.0 ft (477 m)
Max Span224.1 ft (68.3 m)
Deck Width44.0 ft (13.4 m)
Deck Area6391.8 sq m
Main Spans8
Year Built2016

Traffic

Avg Daily Traffic96,170 (2021)
Truck Traffic8%
Lanes On Bridge2
Lanes Under Bridge9

Inspection & Ownership

Last InspectionMarch 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number79I00400168

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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