I-75 SB over North Line RD
GoodWayne County, Michigan · In Southgate · Structure no. 000000000011661
- Built
- 1966
- 59 years old, rebuilt 2018
- Condition
- Good
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 207 ft
- 4 main spans
- Daily traffic
- 46,853
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
I-75 SB over North Line RD is a steel continuous stringer/multi-beam or girder carrying I-75 SB over North Line RD in Wayne County, Michigan. It was built in 1966 and reconstructed in 2018, so it is 59 years old, older than the Michigan average of 48.3 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 46,853 vehicles a day, roughly 20% of them trucks, projected to reach 52,548 by 2038. The structure is 207 ft (63.1 m) long and 63 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
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 | 8 Very Good | No problems noted. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-75 SB over North Line RD built?
It was built in 1966, making it 59 years old in 2025. It was reconstructed in 2018.
What condition is I-75 SB over North Line RD 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 September 2024.
How much traffic does I-75 SB over North Line RD carry?
About 46,853 vehicles per day (2015 count), of which roughly 20% are trucks.
How long is I-75 SB over North Line RD?
The structure is 207 ft (63.1 m) long with a longest span of 60 ft (18.3 m) and a deck 63 ft wide.
Who owns I-75 SB over North Line RD?
It is owned by the State Highway Agency.