US Bridges

Nfa A596 over I75

Fair

Monroe County, Tennessee · 3.5 M. W. Loudon · Structure no. 62I00750011

Built
1971
54 years old
Condition
Fair
inspected August 2024
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
472 ft
6 main spans
Daily traffic
110
2020 count
Owner
State
State Highway Agency

About this bridge

Nfa A596 over I75 is a concrete continuous box beam or girders - single or spread carrying Nfa A596 over I75 in Monroe County, Tennessee. It was built in 1971, so it is 54 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 110 vehicles a day, roughly 2% of them trucks, projected to reach 176 by 2042. The structure is 472 ft (143.8 m) long and 32 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesNfa A596
CrossesI75
Location3.5 M. W. Loudon
RouteCounty Highway 596
CountyMonroe County
StateTennessee
Coordinates35.66587, -84.45203
Functional classRural 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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionAugust 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 alignment8: Equal to present desirable criteria
Operating rating42.9 US tons
Inventory rating31.1 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length472 ft (143.8 m)
Longest span102 ft (31.1 m)
Deck width32 ft (9.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic110 (2020)
Projected traffic176 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed9.9 mi (16 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 I75 built?

It was built in 1971, making it 54 years old in 2025.

What condition is Nfa A596 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 August 2024.

How much traffic does Nfa A596 over I75 carry?

About 110 vehicles per day (2020 count), of which roughly 2% are trucks.

How long is Nfa A596 over I75?

The structure is 472 ft (143.8 m) long with a longest span of 102 ft (31.1 m) and a deck 32 ft wide.

Who owns Nfa A596 over I75?

It is owned by the State Highway Agency.