SB I-75 over North to West Ramp
GoodOakland County, Michigan · Square Lake Interchange · Structure no. 000000000013959
- Built
- 2017
- 8 years old
- Condition
- Good
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 143 ft
- 1 main span
- Daily traffic
- 45,000
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
SB I-75 over North to West Ramp is a prestressed concrete stringer/multi-beam or girder carrying SB I-75 over North to West Ramp in Oakland County, Michigan. It was built in 2017, so it is 8 years old, younger 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 45,000 vehicles a day, projected to reach 52,210 by 2035. The structure is 143 ft (43.6 m) long and 75 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 | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SB I-75 over North to West Ramp built?
It was built in 2017, making it 8 years old in 2025.
What condition is SB I-75 over North to West Ramp 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 October 2023.
How much traffic does SB I-75 over North to West Ramp carry?
About 45,000 vehicles per day (2015 count).
How long is SB I-75 over North to West Ramp?
The structure is 143 ft (43.6 m) long with a longest span of 143 ft (43.6 m) and a deck 75 ft wide.
Who owns SB I-75 over North to West Ramp?
It is owned by the State Highway Agency.