US Bridges

I40 over I40

GoodPosted for load

Davidson County, Tennessee · I40 in Nashville@heritage · Structure no. 19I00400161

Built
1991
34 years old
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
278 ft
2 main spans
Daily traffic
120,445
2021 count
Owner
State
State Highway Agency

About this bridge

I40 over I40 is a steel continuous stringer/multi-beam or girder carrying I40 over I40 in Davidson County, Tennessee. It was built in 1991, so it is 34 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. Its operating status is: posted for load restriction.

It carries about 120,445 vehicles a day, roughly 7% of them trucks, projected to reach 203,896 by 2042. The structure is 278 ft (84.7 m) long and 44 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesI40
CrossesI40
LocationI40 in Nashville@heritage
RouteInterstate I0040
CountyDavidson County
StateTennessee
Coordinates36.16874, -86.60664
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 inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating15.3 US tons
Inventory rating11.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length278 ft (84.7 m)
Longest span138 ft (42.1 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic120,445 (2021)
Projected traffic203,896 by 2042
Trucks7%
Lanes on structure2
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$4.5 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I40 over I40 built?

It was built in 1991, making it 34 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 January 2024.

How much traffic does I40 over I40 carry?

About 120,445 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is I40 over I40?

The structure is 278 ft (84.7 m) long with a longest span of 138 ft (42.1 m) and a deck 44 ft wide.

Who owns I40 over I40?

It is owned by the State Highway Agency.