US Bridges

I40 over Nfa 2500 Zirkle Road

Fair

Jefferson County, Tennessee · 4.69 Mi.From Cocke Co.Ln. · Structure no. 45I00400011

Built
1961
64 years old
Condition
Fair
inspected June 2024
Type
Tee Beam
Concrete Continuous
Length
164 ft
3 main spans
Daily traffic
25,031
2021 count
Owner
State
State Highway Agency

About this bridge

I40 over Nfa 2500 Zirkle Road is a concrete continuous tee beam carrying I40 over Nfa 2500 Zirkle Road in Jefferson County, Tennessee. It was built in 1961, 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 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 25,031 vehicles a day, roughly 6% of them trucks, projected to reach 40,050 by 2042. The structure is 164 ft (50.1 m) long and 46 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI40
CrossesNfa 2500 Zirkle Road
Location4.69 Mi.From Cocke Co.Ln.
RouteInterstate 40
Coordinates36.06223, -83.37825
Functional classRural 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37.5 US tons
Inventory rating26.8 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length164 ft (50.1 m)
Longest span58 ft (17.6 m)
Deck width46 ft (14 m)
Roadway width40 ft (12.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,031 (2021)
Projected traffic40,050 by 2042
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I40 over Nfa 2500 Zirkle Road built?

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

What condition is I40 over Nfa 2500 Zirkle Road 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 June 2024.

How much traffic does I40 over Nfa 2500 Zirkle Road carry?

About 25,031 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is I40 over Nfa 2500 Zirkle Road?

The structure is 164 ft (50.1 m) long with a longest span of 58 ft (17.6 m) and a deck 46 ft wide.

Who owns I40 over Nfa 2500 Zirkle Road?

It is owned by the State Highway Agency.