US Bridges

I40 over I40 / I640 Rmp to I40-EB

Fair

Knox County, Tennessee · I-40 & I-640 Jct. · Structure no. 47I00400123

Built
1982
43 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
317 ft
3 main spans
Daily traffic
68,467
2021 count
Owner
State
State Highway Agency

About this bridge

I40 over I40 / I640 Rmp to I40-EB is a steel continuous stringer/multi-beam or girder carrying I40 over I40 / I640 Rmp to I40-EB in Knox County, Tennessee. It was built in 1982, so it is 43 years old, younger 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 68,467 vehicles a day, roughly 6% of them trucks, projected to reach 127,808 by 2041. The structure is 317 ft (96.6 m) long and 120 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesI40
CrossesI40 / I640 Rmp to I40-EB
LocationI-40 & I-640 Jct.
RouteInterstate 40
CountyKnox County
StateTennessee
Coordinates36.01338, -83.8595
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.
Substructure7 GoodSome minor problems.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.5 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length317 ft (96.6 m)
Longest span168 ft (51.2 m)
Deck width120 ft (36.6 m)
Roadway width118 ft (36 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic68,467 (2021)
Projected traffic127,808 by 2041
Trucks6%
Lanes on structure6
Traffic directionTwo-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 / I640 Rmp to I40-EB built?

It was built in 1982, making it 43 years old in 2025.

What condition is I40 over I40 / I640 Rmp to I40-EB 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 2024.

How much traffic does I40 over I40 / I640 Rmp to I40-EB carry?

About 68,467 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is I40 over I40 / I640 Rmp to I40-EB?

The structure is 317 ft (96.6 m) long with a longest span of 168 ft (51.2 m) and a deck 120 ft wide.

Who owns I40 over I40 / I640 Rmp to I40-EB?

It is owned by the State Highway Agency.