Johnston Slagle over Great Miami River
GoodShelby County, Ohio · .12 M. S. Sr. 47 · Structure no. 7538103
- Built
- 2007
- 18 years old
- Condition
- Good
- inspected May 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 75 ft
- 3 main spans
- Daily traffic
- 385
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
Johnston Slagle over Great Miami River is a prestressed concrete box beam or girders - multiple carrying Johnston Slagle over Great Miami River in Shelby County, Ohio. It was built in 2007, so it is 18 years old, younger than the Ohio average of 47.3 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 385 vehicles a day, roughly 8% of them trucks, projected to reach 534 by 2035. The structure is 75 ft (22.9 m) long and 44 ft wide. If it were closed, the detour would be 5 mi (8 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 Johnston Slagle over Great Miami River built?
It was built in 2007, making it 18 years old in 2025.
What condition is Johnston Slagle over Great Miami 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 May 2024.
How much traffic does Johnston Slagle over Great Miami River carry?
About 385 vehicles per day (2015 count), of which roughly 8% are trucks.
How long is Johnston Slagle over Great Miami River?
The structure is 75 ft (22.9 m) long with a longest span of 18 ft (5.5 m) and a deck 44 ft wide.
Who owns Johnston Slagle over Great Miami River?
It is owned by the County Highway Agency.