I-75 NB over Cass River
GoodSaginaw County, Michigan · 10.0 MI NW of Genesee CO · Structure no. 000000000009185
- Built
- 1961
- 64 years old, rebuilt 2008
- Condition
- Good
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 280 ft
- 4 main spans
- Daily traffic
- 56,192
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
I-75 NB over Cass River is a steel continuous stringer/multi-beam or girder carrying I-75 NB over Cass River in Saginaw County, Michigan. It was built in 1961 and reconstructed in 2008, so it is 64 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 56,192 vehicles a day, roughly 7% of them trucks, projected to reach 56,192 by 2023. The structure is 280 ft (85.3 m) long and 73 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 | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-75 NB over Cass River built?
It was built in 1961, making it 64 years old in 2025. It was reconstructed in 2008.
What condition is I-75 NB over Cass River 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 April 2024.
How much traffic does I-75 NB over Cass River carry?
About 56,192 vehicles per day (2023 count), of which roughly 7% are trucks.
How long is I-75 NB over Cass River?
The structure is 280 ft (85.3 m) long with a longest span of 70 ft (21.3 m) and a deck 73 ft wide.
Who owns I-75 NB over Cass River?
It is owned by the State Highway Agency.