US Bridges

I40 over I40 / SR 24

Fair

Putnam County, Tennessee · 0.5 MI E of SR24 · Structure no. 71I00400055

Built
1963
62 years old, rebuilt 1982
Condition
Fair
inspected July 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
148 ft
3 main spans
Daily traffic
41,614
2021 count
Owner
State
State Highway Agency

About this bridge

I40 over I40 / SR 24 is a prestressed concrete stringer/multi-beam or girder carrying I40 over I40 / SR 24 in Putnam County, Tennessee. It was built in 1963 and reconstructed in 1982, so it is 62 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 6 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 41,614 vehicles a day, roughly 7% of them trucks, projected to reach 66,582 by 2042. The structure is 148 ft (45 m) long and 44 ft wide.

Location

Open in Google Maps
CarriesI40
CrossesI40 / SR 24
Location0.5 MI E of SR24
RouteInterstate 40
CountyPutnam County
StateTennessee
Coordinates36.13845, -85.26704
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating76.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20 + Mod
Structure length148 ft (45 m)
Longest span50 ft (15.2 m)
Deck width44 ft (13.5 m)
Roadway width41 ft (12.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic41,614 (2021)
Projected traffic66,582 by 2042
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 / SR 24 built?

It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1982.

What condition is I40 over I40 / SR 24 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 July 2024.

How much traffic does I40 over I40 / SR 24 carry?

About 41,614 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is I40 over I40 / SR 24?

The structure is 148 ft (45 m) long with a longest span of 50 ft (15.2 m) and a deck 44 ft wide.

Who owns I40 over I40 / SR 24?

It is owned by the State Highway Agency.