Alton Darby CR RD over IR-70
FairFranklin County, Ohio · 3.82 MI E of Madison CO · Structure no. 2503875
- Built
- 1970
- 55 years old
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 308 ft
- 4 main spans
- Daily traffic
- 6,924
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
Alton Darby CR RD over IR-70 is a steel continuous stringer/multi-beam or girder carrying Alton Darby CR RD over IR-70 in Franklin County, Ohio. It was built in 1970, so it is 55 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 5 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 6,924 vehicles a day, roughly 2% of them trucks, projected to reach 9,611 by 2035. The structure is 308 ft (93.9 m) long and 36 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Alton Darby CR RD over IR-70 built?
It was built in 1970, making it 55 years old in 2025.
What condition is Alton Darby CR RD over IR-70 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 August 2024.
How much traffic does Alton Darby CR RD over IR-70 carry?
About 6,924 vehicles per day (2015 count), of which roughly 2% are trucks.
How long is Alton Darby CR RD over IR-70?
The structure is 308 ft (93.9 m) long with a longest span of 86 ft (26.2 m) and a deck 36 ft wide.
Who owns Alton Darby CR RD over IR-70?
It is owned by the State Highway Agency.