Cliff Mine RD over Montour Run
GoodAllegheny County, Pennsylvania · MT05 Montour Run No. 5 · Structure no. 000000000002283
- Built
- 1883
- 142 years old, rebuilt 2013
- Condition
- Good
- inspected March 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 58 ft
- 1 main span
- Daily traffic
- 5,321
- 2010 count
- Owner
- County
- County Highway Agency
About this bridge
Cliff Mine RD over Montour Run is a prestressed concrete box beam or girders - multiple carrying Cliff Mine RD over Montour Run in Allegheny County, Pennsylvania. It was built in 1883 and reconstructed in 2013, so it is 142 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 5,321 vehicles a day, roughly 5% of them trucks, projected to reach 7,938 by 2030. The structure is 58 ft (17.7 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 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 | 8 Very Good | No problems noted. |
| 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 Cliff Mine RD over Montour Run built?
It was built in 1883, making it 142 years old in 2025. It was reconstructed in 2013.
What condition is Cliff Mine RD over Montour 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 March 2024.
How much traffic does Cliff Mine RD over Montour Run carry?
About 5,321 vehicles per day (2010 count), of which roughly 5% are trucks.
How long is Cliff Mine RD over Montour Run?
The structure is 58 ft (17.7 m) long with a longest span of 58 ft (17.7 m) and a deck 35 ft wide.
Who owns Cliff Mine RD over Montour Run?
It is owned by the County Highway Agency.