SR 4004 over Mill Run
GoodBlair County, Pennsylvania · Altoona 58th Street · Structure no. 000000000005806
- Built
- 1949
- 76 years old, rebuilt 2021
- Condition
- Good
- inspected June 2023
- Type
- Tee Beam
- Concrete
- Length
- 70 ft
- 2 main spans
- Daily traffic
- 8,276
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SR 4004 over Mill Run is a concrete tee beam carrying SR 4004 over Mill Run in Blair County, Pennsylvania. It was built in 1949 and reconstructed in 2021, so it is 76 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 8,276 vehicles a day, roughly 3% of them trucks, projected to reach 13,047 by 2032. The structure is 70 ft (21.3 m) long and 43 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 SR 4004 over Mill Run built?
It was built in 1949, making it 76 years old in 2025. It was reconstructed in 2021.
What condition is SR 4004 over Mill 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 June 2023.
How much traffic does SR 4004 over Mill Run carry?
About 8,276 vehicles per day (2024 count), of which roughly 3% are trucks.
How long is SR 4004 over Mill Run?
The structure is 70 ft (21.3 m) long with a longest span of 34 ft (10.4 m) and a deck 43 ft wide.
Who owns SR 4004 over Mill Run?
It is owned by the State Highway Agency.