US Bridges

I24 over Germantown RD (fau 3577)

Fair

Hamilton County, Tennessee · In Chattanooga · Structure no. 33I00240055

Built
2022
3 years old
Condition
Fair
inspected September 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
120 ft
2 main spans
Daily traffic
91,448
2021 count
Owner
State
State Highway Agency

About this bridge

I24 over Germantown RD (fau 3577) is a prestressed concrete continuous box beam or girders - single or spread carrying I24 over Germantown RD (fau 3577) in Hamilton County, Tennessee. It was built in 2022, so it is 3 years old, younger 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 91,448 vehicles a day, roughly 7% of them trucks, projected to reach 165,984 by 2041. The structure is 120 ft (36.6 m) long and 138 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI24
CrossesGermantown RD (fau 3577)
LocationIn Chattanooga
RouteInterstate 24
CountyHamilton County
StateTennessee
Coordinates35.01432, -85.25217
Functional classUrban Principal Arterial - Interstate

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.
Substructure7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.4 US tons
Inventory rating27.4 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length120 ft (36.6 m)
Longest span60 ft (18.3 m)
Deck width138 ft (42 m)
Roadway width123 ft (37.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic91,448 (2021)
Projected traffic165,984 by 2041
Trucks7%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$3.2 million (2021 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I24 over Germantown RD (fau 3577) built?

It was built in 2022, making it 3 years old in 2025.

What condition is I24 over Germantown RD (fau 3577) 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 I24 over Germantown RD (fau 3577) carry?

About 91,448 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is I24 over Germantown RD (fau 3577)?

The structure is 120 ft (36.6 m) long with a longest span of 60 ft (18.3 m) and a deck 138 ft wide.

Who owns I24 over Germantown RD (fau 3577)?

It is owned by the State Highway Agency.