RTE 345 over Trout Brook
GoodSt. Lawrence County, New York · 2 MI SE JCT Rts 345 & 310 · Structure no. 000000001027300
- Built
- 1991
- 34 years old
- Condition
- Good
- inspected June 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 78 ft
- 1 main span
- Daily traffic
- 2,115
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
RTE 345 over Trout Brook is a prestressed concrete box beam or girders - multiple carrying RTE 345 over Trout Brook in St. Lawrence County, New York. It was built in 1991, so it is 34 years old, younger 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 2,115 vehicles a day, roughly 9% of them trucks, projected to reach 2,206 by 2041. The structure is 78 ft (23.8 m) long and 29 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was RTE 345 over Trout Brook built?
It was built in 1991, making it 34 years old in 2025.
What condition is RTE 345 over Trout Brook 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 June 2023.
How much traffic does RTE 345 over Trout Brook carry?
About 2,115 vehicles per day (2020 count), of which roughly 9% are trucks.
How long is RTE 345 over Trout Brook?
The structure is 78 ft (23.8 m) long with a longest span of 74 ft (22.5 m) and a deck 29 ft wide.
Who owns RTE 345 over Trout Brook?
It is owned by the State Highway Agency.