T-563 Karns Avenue over Nine Mile Run
PoorWestmoreland County, Pennsylvania · 80 Ft from SR 982 · Structure no. 000000000036966
- Built
- 1960
- 65 years old
- Condition
- Poor
- inspected February 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 51 ft
- 2 main spans
- Daily traffic
- 500
- 2024 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
T-563 Karns Avenue over Nine Mile Run is a prestressed concrete box beam or girders - multiple carrying T-563 Karns Avenue over Nine Mile Run in Westmoreland County, Pennsylvania. It was built in 1960, so it is 65 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 4 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.
It carries about 500 vehicles a day, roughly 1% of them trucks, projected to reach 640 by 2044. The structure is 51 ft (15.5 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 T-563 Karns Avenue over Nine Mile Run built?
It was built in 1960, making it 65 years old in 2025.
What condition is T-563 Karns Avenue over Nine Mile 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 February 2024.
How much traffic does T-563 Karns Avenue over Nine Mile Run carry?
About 500 vehicles per day (2024 count), of which roughly 1% are trucks.
How long is T-563 Karns Avenue over Nine Mile Run?
The structure is 51 ft (15.5 m) long with a longest span of 23 ft (7 m) and a deck 24 ft wide.
Who owns T-563 Karns Avenue over Nine Mile Run?
It is owned by the Town or Township Highway Agency.