IR-70 over Great Miami River
GoodMontgomery County, Ohio · 1.14 Mi.E. Jct. I-75 · Structure no. 5706076
- Built
- 2006
- 19 years old
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 395 ft
- 4 main spans
- Daily traffic
- 72,071
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
IR-70 over Great Miami River is a prestressed concrete continuous stringer/multi-beam or girder carrying IR-70 over Great Miami River in Montgomery County, Ohio. It was built in 2006, so it is 19 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 72,071 vehicles a day, roughly 24% of them trucks, projected to reach 100,035 by 2035. The structure is 395 ft (120.4 m) long and 139 ft wide.
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 IR-70 over Great Miami River built?
It was built in 2006, making it 19 years old in 2025.
What condition is IR-70 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 September 2023.
How much traffic does IR-70 over Great Miami River carry?
About 72,071 vehicles per day (2015 count), of which roughly 24% are trucks.
How long is IR-70 over Great Miami River?
The structure is 395 ft (120.4 m) long with a longest span of 106 ft (32.3 m) and a deck 139 ft wide.
Who owns IR-70 over Great Miami River?
It is owned by the State Highway Agency.