T-456 Bridge #6 over Tributary to Mud Run
PoorColumbia County, Pennsylvania · 1.2 MI SW of Rohrsburg · Structure no. 000000000012795
- Built
- 1921
- 104 years old
- Condition
- Poor
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 24 ft
- 1 main span
- Daily traffic
- 120
- 2023 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
T-456 Bridge #6 over Tributary to Mud Run is a steel stringer/multi-beam or girder carrying T-456 Bridge #6 over Tributary to Mud Run in Columbia County, Pennsylvania. It was built in 1921, so it is 104 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 120 vehicles a day, roughly 2% of them trucks, projected to reach 185 by 2045. The structure is 24 ft (7.3 m) long and 18 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 T-456 Bridge #6 over Tributary to Mud Run built?
It was built in 1921, making it 104 years old in 2025.
What condition is T-456 Bridge #6 over Tributary to Mud 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 May 2023.
How much traffic does T-456 Bridge #6 over Tributary to Mud Run carry?
About 120 vehicles per day (2023 count), of which roughly 2% are trucks.
How long is T-456 Bridge #6 over Tributary to Mud Run?
The structure is 24 ft (7.3 m) long with a longest span of 21 ft (6.4 m) and a deck 18 ft wide.
Who owns T-456 Bridge #6 over Tributary to Mud Run?
It is owned by the Town or Township Highway Agency.