Liberty Bridge over Mon R I376 0837 2 Av Arl
FairAllegheny County, Pennsylvania · Liberty Bridge · Structure no. 000000000001808
- Built
- 1928
- 97 years old, rebuilt 2017
- Condition
- Fair
- inspected April 2023
- Type
- Truss - Deck
- Steel Continuous
- Length
- 2,663 ft
- 15 main spans
- Daily traffic
- 42,292
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Liberty Bridge over Mon R I376 0837 2 Av Arl is a steel continuous truss - deck carrying Liberty Bridge over Mon R I376 0837 2 Av Arl in Allegheny County, Pennsylvania. It was built in 1928 and reconstructed in 2017, so it is 97 years old, older than the Pennsylvania average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 42,292 vehicles a day, roughly 6% of them trucks, projected to reach 56,825 by 2031. The structure is 2,663 ft (811.7 m) long and 49 ft wide. If it were closed, the detour would be 3.1 mi (5 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Liberty Bridge over Mon R I376 0837 2 Av Arl built?
It was built in 1928, making it 97 years old in 2025. It was reconstructed in 2017.
What condition is Liberty Bridge over Mon R I376 0837 2 Av Arl in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.
How much traffic does Liberty Bridge over Mon R I376 0837 2 Av Arl carry?
About 42,292 vehicles per day (2023 count), of which roughly 6% are trucks.
How long is Liberty Bridge over Mon R I376 0837 2 Av Arl?
The structure is 2,663 ft (811.7 m) long with a longest span of 470 ft (143.3 m) and a deck 49 ft wide.
Who owns Liberty Bridge over Mon R I376 0837 2 Av Arl?
It is owned by the State Highway Agency.