I-75 NB over Gtw RR
GoodOakland County, Michigan · 5.7 MI NW of M-59 · Structure no. 000000000007996
- Built
- 1962
- 63 years old
- Condition
- Good
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 144 ft
- 3 main spans
- Daily traffic
- 36,813
- 2019 count
- Owner
- State
- State Highway Agency
About this bridge
I-75 NB over Gtw RR is a prestressed concrete stringer/multi-beam or girder carrying I-75 NB over Gtw RR in Oakland County, Michigan. It was built in 1962, so it is 63 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 36,813 vehicles a day, roughly 5% of them trucks, projected to reach 39,088 by 2039. The structure is 144 ft (43.9 m) long and 62 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 | 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 NB over Gtw RR built?
It was built in 1962, making it 63 years old in 2025.
What condition is I-75 NB over Gtw RR 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 March 2023.
How much traffic does I-75 NB over Gtw RR carry?
About 36,813 vehicles per day (2019 count), of which roughly 5% are trucks.
How long is I-75 NB over Gtw RR?
The structure is 144 ft (43.9 m) long with a longest span of 48 ft (14.6 m) and a deck 62 ft wide.
Who owns I-75 NB over Gtw RR?
It is owned by the State Highway Agency.