Structure 19I00400033 · Davidson County, TN

I40 over I40 / Morrow RD

Carries I40 over I40 / Morrow RD, I40/ Morrow RD.

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
CAR · 15 FT110 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 7/9Substructure 7/9

110 ft end to end, longest span 57 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.

Built1963rebuilt 2002
Length109.6 ft33.4 m
Daily traffic119,563counted 2021
Last inspectedNovember 2023every 24 months

Location

StateTennessee
CountyDavidson
LocationI40/ Morrow RD
CarriesI40
CrossesI40 / Morrow RD
Coordinates36.15321, -86.85228

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length109.6 ft (33.4 m)
Max Span57.1 ft (17.4 m)
Deck Width177.2 ft (54 m)
Deck Area1803.6 sq m
Main Spans3
Year Built1963 (reconstructed 2002)

Traffic

Avg Daily Traffic119,563 (2021)
Truck Traffic7%
Lanes On Bridge11
Lanes Under Bridge2

Inspection & Ownership

Last InspectionNovember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number19I00400033

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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