US Bridges

I-75 over South River Trib.

Fair

Fulton County, Georgia · In South Atlanta · Structure no. 000000012101350

Built
1964
61 years old, rebuilt 1986
Condition
Fair
inspected April 2023
Type
Culvert
Concrete
Length
27 ft
3 main spans
Daily traffic
349,000
2024 count
Owner
State
State Highway Agency

About this bridge

I-75 over South River Trib. is a concrete culvert carrying I-75 over South River Trib. in Fulton County, Georgia. It was built in 1964 and reconstructed in 1986, so it is 61 years old, older than the Georgia average of 47.5 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 349,000 vehicles a day, roughly 1% of them trucks, projected to reach 403,875 by 2032. The structure is 27 ft (8.2 m) long. If it were closed, the detour would be 5 mi (8 km).

CarriesI-75
CrossesSouth River Trib.
LocationIn South Atlanta
RouteInterstate 75
StateGeorgia
Coordinates33.71665, -84.3982
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20 + Mod
Structure length27 ft (8.2 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic349,000 (2024)
Projected traffic403,875 by 2032
Trucks1%
Lanes on structure14
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 statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was I-75 over South River Trib. built?

It was built in 1964, making it 61 years old in 2025. It was reconstructed in 1986.

What condition is I-75 over South River Trib. 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 April 2023.

How much traffic does I-75 over South River Trib. carry?

About 349,000 vehicles per day (2024 count), of which roughly 1% are trucks.

How long is I-75 over South River Trib.?

The structure is 27 ft (8.2 m) long with a longest span of 8 ft (2.4 m).

Who owns I-75 over South River Trib.?

It is owned by the State Highway Agency.