US Bridges

I75 over South Chickamauga Creek

Good

Hamilton County, Tennessee · I24 I75 Interchange · Structure no. 33I00750019

Built
1960
65 years old, rebuilt 1992
Condition
Good
inspected July 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
266 ft
4 main spans
Daily traffic
137,904
2021 count
Owner
State
State Highway Agency

About this bridge

I75 over South Chickamauga Creek is a prestressed concrete box beam or girders - multiple carrying I75 over South Chickamauga Creek in Hamilton County, Tennessee. It was built in 1960 and reconstructed in 1992, so it is 65 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 137,904 vehicles a day, roughly 7% of them trucks, projected to reach 188,238 by 2042. The structure is 266 ft (81.1 m) long and 179 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesI75
CrossesSouth Chickamauga Creek
LocationI24 I75 Interchange
RouteInterstate 75
Coordinates35.00744, -85.20222
Functional classUrban 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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.6 US tons
Inventory rating35.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans4
Design loadHL 93
Structure length266 ft (81.1 m)
Longest span67 ft (20.4 m)
Deck width179 ft (54.6 m)
Roadway width177 ft (53.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic137,904 (2021)
Projected traffic188,238 by 2042
Trucks7%
Lanes on structure11
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was I75 over South Chickamauga Creek built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1992.

What condition is I75 over South Chickamauga Creek 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 July 2024.

How much traffic does I75 over South Chickamauga Creek carry?

About 137,904 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is I75 over South Chickamauga Creek?

The structure is 266 ft (81.1 m) long with a longest span of 67 ft (20.4 m) and a deck 179 ft wide.

Who owns I75 over South Chickamauga Creek?

It is owned by the State Highway Agency.