Silver Street over Portage River
GoodSt. Joseph County, Michigan · 1.0 MI S of Portage Lake · Structure no. 000000000010313
- Built
- 2015
- 10 years old
- Condition
- Good
- inspected November 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 85 ft
- 1 main span
- Daily traffic
- 3,265
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
Silver Street over Portage River is a prestressed concrete box beam or girders - multiple carrying Silver Street over Portage River in St. Joseph County, Michigan. It was built in 2015, so it is 10 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 3,265 vehicles a day, roughly 12% of them trucks, projected to reach 3,467 by 2035. The structure is 85 ft (25.9 m) long and 41 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 Silver Street over Portage River built?
It was built in 2015, making it 10 years old in 2025.
What condition is Silver Street over Portage 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 November 2023.
How much traffic does Silver Street over Portage River carry?
About 3,265 vehicles per day (2015 count), of which roughly 12% are trucks.
How long is Silver Street over Portage River?
The structure is 85 ft (25.9 m) long with a longest span of 84 ft (25.5 m) and a deck 41 ft wide.
Who owns Silver Street over Portage River?
It is owned by the County Highway Agency.