T456 Old Mill Run over Mill Run
PoorPosted for loadBlair County, Pennsylvania · 1 Mi.W.Of Altoona · Structure no. 000000000005940
- Built
- 1957
- 68 years old
- Condition
- Poor
- inspected October 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 40 ft
- 1 main span
- Daily traffic
- 622
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
T456 Old Mill Run over Mill Run is a prestressed concrete box beam or girders - multiple carrying T456 Old Mill Run over Mill Run in Blair County, Pennsylvania. It was built in 1957, so it is 68 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 622 vehicles a day, roughly 1% of them trucks, projected to reach 777 by 2043. The structure is 40 ft (12.2 m) long and 22 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 | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 4 Poor | Advanced section loss, deterioration, 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 T456 Old Mill Run over Mill Run built?
It was built in 1957, making it 68 years old in 2025.
What condition is T456 Old Mill Run over Mill 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 October 2024.
How much traffic does T456 Old Mill Run over Mill Run carry?
About 622 vehicles per day (2023 count), of which roughly 1% are trucks.
How long is T456 Old Mill Run over Mill Run?
The structure is 40 ft (12.2 m) long with a longest span of 39 ft (11.9 m) and a deck 22 ft wide.
Who owns T456 Old Mill Run over Mill Run?
It is owned by the County Highway Agency.