Marine City HWY over Swan Creek
GoodSt. Clair County, Michigan · Sec. 35 Casco Twp. · Structure no. 000000000010037
- Built
- 2018
- 7 years old
- Condition
- Good
- inspected March 2024
- Type
- Culvert
- Concrete
- Length
- 43 ft
- 1 main span
- Daily traffic
- 19,478
- 2017 count
- Owner
- County
- County Highway Agency
About this bridge
Marine City HWY over Swan Creek is a concrete culvert carrying Marine City HWY over Swan Creek in St. Clair County, Michigan. It was built in 2018, so it is 7 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 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 19,478 vehicles a day, roughly 14% of them trucks, projected to reach 22,400 by 2037. The structure is 43 ft (13.1 m) long. If it were closed, the detour would be 1.9 mi (3 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Marine City HWY over Swan Creek built?
It was built in 2018, making it 7 years old in 2025.
What condition is Marine City HWY over Swan Creek 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 2024.
How much traffic does Marine City HWY over Swan Creek carry?
About 19,478 vehicles per day (2017 count), of which roughly 14% are trucks.
How long is Marine City HWY over Swan Creek?
The structure is 43 ft (13.1 m) long with a longest span of 39 ft (12 m).
Who owns Marine City HWY over Swan Creek?
It is owned by the County Highway Agency.