US Bridges

Nfa 1279 over I75

Fair

Loudon County, Tennessee · 5 M N Lenoir City · Structure no. 53I00750037

Built
1972
53 years old
Condition
Fair
inspected September 2024
Type
Tee Beam
Concrete Continuous
Length
235 ft
4 main spans
Daily traffic
879
2021 count
Owner
State
State Highway Agency

About this bridge

Nfa 1279 over I75 is a concrete continuous tee beam carrying Nfa 1279 over I75 in Loudon County, Tennessee. It was built in 1972, so it is 53 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 879 vehicles a day, roughly 1% of them trucks, projected to reach 1,406 by 2042. The structure is 235 ft (71.6 m) long and 34 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

CarriesNfa 1279
CrossesI75
Location5 M N Lenoir City
RouteCounty Highway 1279
Coordinates35.86201, -84.25895
Functional classUrban Collector

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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating53.6 US tons
Inventory rating31.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length235 ft (71.6 m)
Longest span66 ft (20 m)
Deck width34 ft (10.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic879 (2021)
Projected traffic1,406 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed14.9 mi (24 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 1279 over I75 built?

It was built in 1972, making it 53 years old in 2025.

What condition is Nfa 1279 over I75 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 1279 over I75 carry?

About 879 vehicles per day (2021 count), of which roughly 1% are trucks.

How long is Nfa 1279 over I75?

The structure is 235 ft (71.6 m) long with a longest span of 66 ft (20 m) and a deck 34 ft wide.

Who owns Nfa 1279 over I75?

It is owned by the State Highway Agency.