US Bridges

I40 over I40

Good

Davidson County, Tennessee · In Nashville @ Airport · Structure no. 19I00400329

Built
1988
37 years old
Condition
Good
inspected December 2023
Type
Box Beam or Girders - Single or Spread
Steel Continuous
Length
470 ft
2 main spans
Daily traffic
136,488
2021 count
Owner
State
State Highway Agency

About this bridge

I40 over I40 is a steel continuous box beam or girders - single or spread carrying I40 over I40 in Davidson County, Tennessee. It was built in 1988, so it is 37 years old, younger than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 136,488 vehicles a day, roughly 7% of them trucks, projected to reach 244,803 by 2042. The structure is 470 ft (143.3 m) long and 32 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

CarriesI40
CrossesI40
LocationIn Nashville @ Airport
RouteInterstate I0040
Coordinates36.14158, -86.67346
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.8 US tons
Inventory rating36.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length470 ft (143.3 m)
Longest span235 ft (71.6 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic136,488 (2021)
Projected traffic244,803 by 2042
Trucks7%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I40 over I40 built?

It was built in 1988, making it 37 years old in 2025.

What condition is I40 over I40 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2023.

How much traffic does I40 over I40 carry?

About 136,488 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is I40 over I40?

The structure is 470 ft (143.3 m) long with a longest span of 235 ft (71.6 m) and a deck 32 ft wide.

Who owns I40 over I40?

It is owned by the State Highway Agency.