US Bridges

I24 over Browns Ferry (fau 3622)

Poor

Hamilton County, Tennessee · 4.2 MI E of Ga State Line · Structure no. 33I00240007

Built
1964
61 years old
Condition
Poor
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
139 ft
3 main spans
Daily traffic
69,132
2021 count
Owner
State
State Highway Agency

About this bridge

I24 over Browns Ferry (fau 3622) is a steel stringer/multi-beam or girder carrying I24 over Browns Ferry (fau 3622) in Hamilton County, Tennessee. It was built in 1964, so it is 61 years old, older than the Tennessee average of 47.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 69,132 vehicles a day, roughly 7% of them trucks, projected to reach 110,611 by 2042. The structure is 139 ft (42.4 m) long and 45 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesI24
CrossesBrowns Ferry (fau 3622)
Location4.2 MI E of Ga State Line
RouteInterstate 24
CountyHamilton County
StateTennessee
Coordinates35.02738, -85.36387
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating46.4 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length139 ft (42.4 m)
Longest span77 ft (23.5 m)
Deck width45 ft (13.6 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic69,132 (2021)
Projected traffic110,611 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.5 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I24 over Browns Ferry (fau 3622) built?

It was built in 1964, making it 61 years old in 2025.

What condition is I24 over Browns Ferry (fau 3622) in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in August 2024.

How much traffic does I24 over Browns Ferry (fau 3622) carry?

About 69,132 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is I24 over Browns Ferry (fau 3622)?

The structure is 139 ft (42.4 m) long with a longest span of 77 ft (23.5 m) and a deck 45 ft wide.

Who owns I24 over Browns Ferry (fau 3622)?

It is owned by the State Highway Agency.