US Bridges

I40 over SR 1

Fair

Davidson County, Tennessee · South Nashville · Structure no. 19I00400312

Built
1968
57 years old
Condition
Fair
inspected December 2023
Type
Frame
Steel Continuous
Length
183 ft
3 main spans
Daily traffic
141,104
2021 count
Owner
State
State Highway Agency

About this bridge

I40 over SR 1 is a steel continuous frame carrying I40 over SR 1 in Davidson County, Tennessee. It was built in 1968, so it is 57 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 141,104 vehicles a day, roughly 7% of them trucks, projected to reach 200,094 by 2042. The structure is 183 ft (55.8 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI40
CrossesSR 1
LocationSouth Nashville
RouteInterstate 40
CountyDavidson County
StateTennessee
Coordinates36.15126, -86.76983
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating45.7 US tons

Structure

Structure typeFrame
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length183 ft (55.8 m)
Longest span90 ft (27.4 m)
Deck width45 ft (13.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic141,104 (2021)
Projected traffic200,094 by 2042
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.9 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I40 over SR 1 built?

It was built in 1968, making it 57 years old in 2025.

What condition is I40 over SR 1 in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2023.

How much traffic does I40 over SR 1 carry?

About 141,104 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is I40 over SR 1?

The structure is 183 ft (55.8 m) long with a longest span of 90 ft (27.4 m) and a deck 45 ft wide.

Who owns I40 over SR 1?

It is owned by the State Highway Agency.