US Bridges

I40 347572M over Middlebrook/Rr/E 3rd Ck

Fair

Knox County, Tennessee · .6 M NE of Westview Ave · Structure no. 47I00400045

Built
1965
60 years old, rebuilt 2001
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
695 ft
3 main spans
Daily traffic
122,506
2021 count
Owner
State
State Highway Agency

About this bridge

I40 347572M over Middlebrook/Rr/E 3rd Ck is a steel continuous stringer/multi-beam or girder carrying I40 347572M over Middlebrook/Rr/E 3rd Ck in Knox County, Tennessee. It was built in 1965 and reconstructed in 2001, so it is 60 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 122,506 vehicles a day, roughly 6% of them trucks, projected to reach 195,002 by 2041. The structure is 695 ft (211.8 m) long and 213 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI40 347572M
CrossesMiddlebrook/Rr/E 3rd Ck
Location.6 M NE of Westview Ave
RouteInterstate 40
CountyKnox County
StateTennessee
Coordinates35.96192, -83.95323
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.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionDecember 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 rating55.7 US tons
Inventory rating32.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3 (+5 approach)
Design loadHS 20
Structure length695 ft (211.8 m)
Longest span133 ft (40.5 m)
Deck width213 ft (65 m)
Roadway width208 ft (63.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic122,506 (2021)
Projected traffic195,002 by 2041
Trucks6%
Lanes on structure11
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and railroad
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I40 347572M over Middlebrook/Rr/E 3rd Ck built?

It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2001.

What condition is I40 347572M over Middlebrook/Rr/E 3rd Ck 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 347572M over Middlebrook/Rr/E 3rd Ck carry?

About 122,506 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is I40 347572M over Middlebrook/Rr/E 3rd Ck?

The structure is 695 ft (211.8 m) long with a longest span of 133 ft (40.5 m) and a deck 213 ft wide.

Who owns I40 347572M over Middlebrook/Rr/E 3rd Ck?

It is owned by the State Highway Agency.