Main Street over Montour Run
PoorPosted for loadAllegheny County, Pennsylvania · Near TR 978 Int. · Structure no. 000000000001824
- Built
- 1950
- 75 years old
- Condition
- Poor
- inspected November 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 32 ft
- 1 main span
- Daily traffic
- 3,416
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Main Street over Montour Run is a prestressed concrete box beam or girders - multiple carrying Main Street over Montour Run in Allegheny County, Pennsylvania. It was built in 1950, so it is 75 years old, older than the Pennsylvania average of 54.8 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 3,416 vehicles a day, roughly 9% of them trucks, projected to reach 4,658 by 2032. The structure is 32 ft (9.8 m) long and 22 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Main Street over Montour Run built?
It was built in 1950, making it 75 years old in 2025.
What condition is Main Street over Montour Run in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2023.
How much traffic does Main Street over Montour Run carry?
About 3,416 vehicles per day (2024 count), of which roughly 9% are trucks.
How long is Main Street over Montour Run?
The structure is 32 ft (9.8 m) long with a longest span of 27 ft (8.2 m) and a deck 22 ft wide.
Who owns Main Street over Montour Run?
It is owned by the State Highway Agency.