SR 81 over Ottawa River
GoodAllen County, Ohio · 2.6 Mi. East of Ir 75 · Structure no. 0203459
- Built
- 1949
- 76 years old, rebuilt 2020
- Condition
- Good
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 161 ft
- 3 main spans
- Daily traffic
- 3,172
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
SR 81 over Ottawa River is a steel continuous stringer/multi-beam or girder carrying SR 81 over Ottawa River in Allen County, Ohio. It was built in 1949 and reconstructed in 2020, so it is 76 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 3,172 vehicles a day, roughly 5% of them trucks, projected to reach 4,403 by 2035. The structure is 161 ft (49 m) long and 34 ft wide. If it were closed, the detour would be 18 mi (29 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 | 8 Very Good | No problems noted. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 81 over Ottawa River built?
It was built in 1949, making it 76 years old in 2025. It was reconstructed in 2020.
What condition is SR 81 over Ottawa 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 October 2023.
How much traffic does SR 81 over Ottawa River carry?
About 3,172 vehicles per day (2015 count), of which roughly 5% are trucks.
How long is SR 81 over Ottawa River?
The structure is 161 ft (49 m) long with a longest span of 60 ft (18.3 m) and a deck 34 ft wide.
Who owns SR 81 over Ottawa River?
It is owned by the State Highway Agency.