US Bridges

I75 Sbl over Nfa A454

Good

McMinn County, Tennessee · 10.8 Mi.From Bradley Co. · Structure no. 54I00750016

Built
1972
53 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
131 ft
3 main spans
Daily traffic
42,449
2021 count
Owner
State
State Highway Agency

About this bridge

I75 Sbl over Nfa A454 is a prestressed concrete continuous stringer/multi-beam or girder carrying I75 Sbl over Nfa A454 in McMinn 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 42,449 vehicles a day, roughly 7% of them trucks, projected to reach 67,918 by 2042. The structure is 131 ft (39.9 m) long and 44 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesI75 Sbl
CrossesNfa A454
Location10.8 Mi.From Bradley Co.
RouteInterstate 75
Coordinates35.43288, -84.68239
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating33.2 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length131 ft (39.9 m)
Longest span61 ft (18.6 m)
Deck width44 ft (13.4 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42,449 (2021)
Projected traffic67,918 by 2042
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 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 statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I75 Sbl over Nfa A454 built?

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

What condition is I75 Sbl over Nfa A454 in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in April 2024.

How much traffic does I75 Sbl over Nfa A454 carry?

About 42,449 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is I75 Sbl over Nfa A454?

The structure is 131 ft (39.9 m) long with a longest span of 61 ft (18.6 m) and a deck 44 ft wide.

Who owns I75 Sbl over Nfa A454?

It is owned by the State Highway Agency.