US-45 over E Br of Ontonagon River
GoodOntonagon County, Michigan · 2.0 MI S of M-26 · Structure no. 000000000008500
- Built
- 1958
- 67 years old, rebuilt 1995
- Condition
- Good
- inspected June 2024
- Type
- Girder and Floorbeam System
- Steel Continuous
- Length
- 383 ft
- 3 main spans
- Daily traffic
- 1,540
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
US-45 over E Br of Ontonagon River is a steel continuous girder and floorbeam system carrying US-45 over E Br of Ontonagon River in Ontonagon County, Michigan. It was built in 1958 and reconstructed in 1995, so it is 67 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 1,540 vehicles a day, roughly 9% of them trucks, projected to reach 1,785 by 2042. The structure is 383 ft (116.7 m) long and 38 ft wide. If it were closed, the detour would be 44.7 mi (72 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. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US-45 over E Br of Ontonagon River built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1995.
What condition is US-45 over E Br of Ontonagon 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 June 2024.
How much traffic does US-45 over E Br of Ontonagon River carry?
About 1,540 vehicles per day (2022 count), of which roughly 9% are trucks.
How long is US-45 over E Br of Ontonagon River?
The structure is 383 ft (116.7 m) long with a longest span of 144 ft (43.9 m) and a deck 38 ft wide.
Who owns US-45 over E Br of Ontonagon River?
It is owned by the State Highway Agency.