Presto Sygan RD over Thoms Run
GoodAllegheny County, Pennsylvania · Intersecti Thoms Run RD · Structure no. 000000000001746
- Built
- 1935
- 90 years old, rebuilt 2012
- Condition
- Good
- inspected May 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 32 ft
- 1 main span
- Daily traffic
- 5,107
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Presto Sygan RD over Thoms Run is a prestressed concrete box beam or girders - multiple carrying Presto Sygan RD over Thoms Run in Allegheny County, Pennsylvania. It was built in 1935 and reconstructed in 2012, so it is 90 years old, older than the Pennsylvania average of 54.8 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 5,107 vehicles a day, roughly 5% of them trucks, projected to reach 4,962 by 2032. The structure is 32 ft (9.8 m) long and 39 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 | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| 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 Presto Sygan RD over Thoms Run built?
It was built in 1935, making it 90 years old in 2025. It was reconstructed in 2012.
What condition is Presto Sygan RD over Thoms Run 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 May 2023.
How much traffic does Presto Sygan RD over Thoms Run carry?
About 5,107 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is Presto Sygan RD over Thoms Run?
The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 39 ft wide.
Who owns Presto Sygan RD over Thoms Run?
It is owned by the State Highway Agency.