IR-70 over Mad River
GoodClark County, Ohio · 1.37MI.W. of Jct. IR-675 · Structure no. 1203630
- Built
- 1957
- 68 years old, rebuilt 1993
- Condition
- Good
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 468 ft
- 7 main spans
- Daily traffic
- 57,754
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
IR-70 over Mad River is a steel continuous stringer/multi-beam or girder carrying IR-70 over Mad River in Clark County, Ohio. It was built in 1957 and reconstructed in 1993, so it is 68 years old, older 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 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 57,754 vehicles a day, roughly 29% of them trucks, projected to reach 80,163 by 2035. The structure is 468 ft (142.6 m) long and 131 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IR-70 over Mad River built?
It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1993.
What condition is IR-70 over Mad 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 June 2023.
How much traffic does IR-70 over Mad River carry?
About 57,754 vehicles per day (2015 count), of which roughly 29% are trucks.
How long is IR-70 over Mad River?
The structure is 468 ft (142.6 m) long with a longest span of 70 ft (21.3 m) and a deck 131 ft wide.
Who owns IR-70 over Mad River?
It is owned by the State Highway Agency.