Mackinaw Road over Johnson Drain
GoodBay County, Michigan · 1000 Ft S of Townline RD · Structure no. 000000000000707
- Built
- 2021
- 4 years old
- Condition
- Good
- inspected May 2024
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete
- Length
- 45 ft
- 1 main span
- Daily traffic
- 409
- 2020 count
- Owner
- County
- County Highway Agency
About this bridge
Mackinaw Road over Johnson Drain is a prestressed concrete box beam or girders - single or spread carrying Mackinaw Road over Johnson Drain in Bay County, Michigan. It was built in 2021, so it is 4 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 409 vehicles a day, roughly 5% of them trucks, projected to reach 499 by 2040. The structure is 45 ft (13.7 m) long and 34 ft wide. If it were closed, the detour would be 3.7 mi (6 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. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mackinaw Road over Johnson Drain built?
It was built in 2021, making it 4 years old in 2025.
What condition is Mackinaw Road over Johnson Drain 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 May 2024.
How much traffic does Mackinaw Road over Johnson Drain carry?
About 409 vehicles per day (2020 count), of which roughly 5% are trucks.
How long is Mackinaw Road over Johnson Drain?
The structure is 45 ft (13.7 m) long with a longest span of 44 ft (13.3 m) and a deck 34 ft wide.
Who owns Mackinaw Road over Johnson Drain?
It is owned by the County Highway Agency.