US Bridges

I40 over I40 / Holston Drive

Good

Knox County, Tennessee · 1.4 M NW of SR9 · Structure no. 47I00400095

Built
1968
57 years old, rebuilt 1975
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
113 ft
3 main spans
Daily traffic
77,847
2021 count
Owner
State
State Highway Agency

About this bridge

I40 over I40 / Holston Drive is a prestressed concrete continuous stringer/multi-beam or girder carrying I40 over I40 / Holston Drive in Knox County, Tennessee. It was built in 1968 and reconstructed in 1975, 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 77,847 vehicles a day, roughly 6% of them trucks, projected to reach 120,656 by 2041. The structure is 113 ft (34.3 m) long and 122 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesI40
CrossesI40 / Holston Drive
Location1.4 M NW of SR9
RouteInterstate 40
CountyKnox County
StateTennessee
Coordinates36.00875, -83.83854
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
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 rating49.3 US tons
Inventory rating23.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length113 ft (34.3 m)
Longest span48 ft (14.6 m)
Deck width122 ft (37.3 m)
Roadway width120 ft (36.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic77,847 (2021)
Projected traffic120,656 by 2041
Trucks6%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 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 / Holston Drive built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1975.

What condition is I40 over I40 / Holston Drive in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2024.

How much traffic does I40 over I40 / Holston Drive carry?

About 77,847 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is I40 over I40 / Holston Drive?

The structure is 113 ft (34.3 m) long with a longest span of 48 ft (14.6 m) and a deck 122 ft wide.

Who owns I40 over I40 / Holston Drive?

It is owned by the State Highway Agency.