Fort Duq Br (low) over Ft Duq Brdg NB Allegh R
FairAllegheny County, Pennsylvania · Fort Duquesne Bridge · Structure no. 000000000043172
- Built
- 1959
- 66 years old
- Condition
- Fair
- inspected April 2024
- Type
- Arch - Thru
- Steel
- Length
- 921 ft
- 1 main span
- Daily traffic
- 20,246
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Fort Duq Br (low) over Ft Duq Brdg NB Allegh R is a steel arch - thru carrying Fort Duq Br (low) over Ft Duq Brdg NB Allegh R in Allegheny County, Pennsylvania. It was built in 1959, so it is 66 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 20,246 vehicles a day, roughly 8% of them trucks, projected to reach 19,685 by 2032. The structure is 921 ft (280.7 m) long and 57 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Fort Duq Br (low) over Ft Duq Brdg NB Allegh R built?
It was built in 1959, making it 66 years old in 2025.
What condition is Fort Duq Br (low) over Ft Duq Brdg NB Allegh R 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 2024.
How much traffic does Fort Duq Br (low) over Ft Duq Brdg NB Allegh R carry?
About 20,246 vehicles per day (2024 count), of which roughly 8% are trucks.
How long is Fort Duq Br (low) over Ft Duq Brdg NB Allegh R?
The structure is 921 ft (280.7 m) long with a longest span of 423 ft (128.9 m) and a deck 57 ft wide.
Who owns Fort Duq Br (low) over Ft Duq Brdg NB Allegh R?
It is owned by the State Highway Agency.