US Bridges

I40 over SR 9

Fair

Cocke County, Tennessee · 1.75M.FROM Jefferson Co.L · Structure no. 15I00400003

Built
1961
64 years old, rebuilt 1994
Condition
Fair
inspected May 2024
Type
Tee Beam
Concrete Continuous
Length
262 ft
4 main spans
Daily traffic
31,139
2021 count
Owner
State
State Highway Agency

About this bridge

I40 over SR 9 is a concrete continuous tee beam carrying I40 over SR 9 in Cocke County, Tennessee. It was built in 1961 and reconstructed in 1994, so it is 64 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 31,139 vehicles a day, roughly 6% of them trucks, projected to reach 49,822 by 2042. The structure is 262 ft (80 m) long and 42 ft wide.

Location

Open in Google Maps
CarriesI40
CrossesSR 9
Location1.75M.FROM Jefferson Co.L
RouteInterstate 40
CountyCocke County
StateTennessee
Coordinates35.96992, -83.25827
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating47.5 US tons
Inventory rating27.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length262 ft (80 m)
Longest span73 ft (22.2 m)
Deck width42 ft (12.7 m)
Roadway width38 ft (11.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic31,139 (2021)
Projected traffic49,822 by 2042
Trucks6%
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.3 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I40 over SR 9 built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1994.

What condition is I40 over SR 9 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 May 2024.

How much traffic does I40 over SR 9 carry?

About 31,139 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is I40 over SR 9?

The structure is 262 ft (80 m) long with a longest span of 73 ft (22.2 m) and a deck 42 ft wide.

Who owns I40 over SR 9?

It is owned by the State Highway Agency.