C55E Unionville over Big Darby
GoodUnion County, Ohio · 2 MI North of SR 161 · Structure no. 8031169
- Built
- 1970
- 55 years old, rebuilt 2017
- Condition
- Good
- inspected October 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 179 ft
- 3 main spans
- Daily traffic
- 480
- 2015 count
- Owner
- County
- County Highway Agency
About this bridge
C55E Unionville over Big Darby is a prestressed concrete box beam or girders - multiple carrying C55E Unionville over Big Darby in Union County, Ohio. It was built in 1970 and reconstructed in 2017, 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 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 480 vehicles a day, roughly 8% of them trucks, projected to reach 666 by 2041. The structure is 179 ft (54.6 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 9 Excellent | No problems noted. |
| Superstructure | 9 Excellent | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was C55E Unionville over Big Darby built?
It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2017.
What condition is C55E Unionville over Big Darby 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 October 2024.
How much traffic does C55E Unionville over Big Darby carry?
About 480 vehicles per day (2015 count), of which roughly 8% are trucks.
How long is C55E Unionville over Big Darby?
The structure is 179 ft (54.6 m) long with a longest span of 57 ft (17.4 m) and a deck 28 ft wide.
Who owns C55E Unionville over Big Darby?
It is owned by the County Highway Agency.