County Road 18 over Unadilla River
GoodOtsego County, New York · 0.2M W Int RTE 18 & 18A · Structure no. 000000003354050
- Built
- 1934
- 91 years old, rebuilt 1993
- Condition
- Good
- inspected August 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 67 ft
- 1 main span
- Daily traffic
- 554
- 2019 count
- Owner
- County
- County Highway Agency
About this bridge
County Road 18 over Unadilla River is a prestressed concrete box beam or girders - multiple carrying County Road 18 over Unadilla River in Otsego County, New York. It was built in 1934 and reconstructed in 1993, so it is 91 years old, older than the New York average of 53 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 554 vehicles a day, roughly 5% of them trucks, projected to reach 577 by 2041. The structure is 67 ft (20.4 m) long and 31 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was County Road 18 over Unadilla River built?
It was built in 1934, making it 91 years old in 2025. It was reconstructed in 1993.
What condition is County Road 18 over Unadilla 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 August 2023.
How much traffic does County Road 18 over Unadilla River carry?
About 554 vehicles per day (2019 count), of which roughly 5% are trucks.
How long is County Road 18 over Unadilla River?
The structure is 67 ft (20.4 m) long with a longest span of 64 ft (19.5 m) and a deck 31 ft wide.
Who owns County Road 18 over Unadilla River?
It is owned by the County Highway Agency.