US Bridges

I40 over I-40 / US-64

Fair

Shelby County, Tennessee · 1 M E of SR177 JCT · Structure no. 79I00400119

Built
1964
61 years old, rebuilt 1997
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
361 ft
4 main spans
Daily traffic
79,912
2021 count
Owner
State
State Highway Agency

About this bridge

I40 over I-40 / US-64 is a steel continuous stringer/multi-beam or girder carrying I40 over I-40 / US-64 in Shelby County, Tennessee. It was built in 1964 and reconstructed in 1997, so it is 61 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 79,912 vehicles a day, roughly 8% of them trucks, projected to reach 127,859 by 2042. The structure is 361 ft (110 m) long and 135 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesI40
CrossesI-40 / US-64
Location1 M E of SR177 JCT
RouteInterstate 40
CountyShelby County
StateTennessee
Coordinates35.20411, -89.7725
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
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 geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating30.8 US tons
Inventory rating23.6 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length361 ft (110 m)
Longest span110 ft (33.4 m)
Deck width135 ft (41.3 m)
Roadway width130 ft (39.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic79,912 (2021)
Projected traffic127,859 by 2042
Trucks8%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed123.7 mi (199 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$10.4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I40 over I-40 / US-64 built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1997.

What condition is I40 over I-40 / US-64 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 October 2024.

How much traffic does I40 over I-40 / US-64 carry?

About 79,912 vehicles per day (2021 count), of which roughly 8% are trucks.

How long is I40 over I-40 / US-64?

The structure is 361 ft (110 m) long with a longest span of 110 ft (33.4 m) and a deck 135 ft wide.

Who owns I40 over I-40 / US-64?

It is owned by the State Highway Agency.