I-75 over M-9109 Mt Zion Road
GoodClayton County, Georgia · 1.75 MI N of Henry CO Lin · Structure no. 000000006300310
- Built
- 1969
- 56 years old, rebuilt 1991
- Condition
- Good
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 441 ft
- 7 main spans
- Daily traffic
- 149,000
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-75 over M-9109 Mt Zion Road is a steel stringer/multi-beam or girder carrying I-75 over M-9109 Mt Zion Road in Clayton County, Georgia. It was built in 1969 and reconstructed in 1991, so it is 56 years old, older than the Georgia average of 47.5 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 149,000 vehicles a day, roughly 1% of them trucks, projected to reach 175,365 by 2032. The structure is 441 ft (134.4 m) long and 132 ft wide.
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-75 over M-9109 Mt Zion Road built?
It was built in 1969, making it 56 years old in 2025. It was reconstructed in 1991.
What condition is I-75 over M-9109 Mt Zion Road 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 May 2023.
How much traffic does I-75 over M-9109 Mt Zion Road carry?
About 149,000 vehicles per day (2024 count), of which roughly 1% are trucks.
How long is I-75 over M-9109 Mt Zion Road?
The structure is 441 ft (134.4 m) long with a longest span of 75 ft (22.9 m) and a deck 132 ft wide.
Who owns I-75 over M-9109 Mt Zion Road?
It is owned by the State Highway Agency.