US Bridges

Nfa A596 over I40

Fair

Roane County, Tennessee · Just E of Kingston Exit · Structure no. 73I00400017

Built
1969
56 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete Continuous
Length
198 ft
4 main spans
Daily traffic
320
2020 count
Owner
State
State Highway Agency

About this bridge

Nfa A596 over I40 is a concrete continuous tee beam carrying Nfa A596 over I40 in Roane County, Tennessee. It was built in 1969, so it is 56 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 320 vehicles a day, roughly 2% of them trucks, projected to reach 512 by 2040. The structure is 198 ft (60.4 m) long and 34 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesNfa A596
CrossesI40
LocationJust E of Kingston Exit
RouteCounty Highway 596
CountyRoane County
StateTennessee
Coordinates35.87202, -84.48409
Functional classUrban Local

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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 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 geometry6: Equal to present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating79.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length198 ft (60.4 m)
Longest span63 ft (19.2 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic320 (2020)
Projected traffic512 by 2040
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

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 Nfa A596 over I40 built?

It was built in 1969, making it 56 years old in 2025.

What condition is Nfa A596 over I40 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 September 2024.

How much traffic does Nfa A596 over I40 carry?

About 320 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A596 over I40?

The structure is 198 ft (60.4 m) long with a longest span of 63 ft (19.2 m) and a deck 34 ft wide.

Who owns Nfa A596 over I40?

It is owned by the State Highway Agency.