IR-70 over Mad River Overflow
FairClark County, Ohio · 1.54MI.W. of Jct. IR-675 · Structure no. 1203576
- Built
- 1957
- 68 years old, rebuilt 1993
- Condition
- Fair
- inspected December 2024
- Type
- Slab
- Concrete Continuous
- Length
- 133 ft
- 3 main spans
- Daily traffic
- 57,754
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
IR-70 over Mad River Overflow is a concrete continuous slab carrying IR-70 over Mad River Overflow 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 57,754 vehicles a day, roughly 29% of them trucks, projected to reach 80,163 by 2035. The structure is 133 ft (40.5 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
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Mad River Overflow 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 Overflow in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in December 2024.
How much traffic does IR-70 over Mad River Overflow carry?
About 57,754 vehicles per day (2015 count), of which roughly 29% are trucks.
How long is IR-70 over Mad River Overflow?
The structure is 133 ft (40.5 m) long with a longest span of 50 ft (15.2 m) and a deck 131 ft wide.
Who owns IR-70 over Mad River Overflow?
It is owned by the State Highway Agency.