Mill ST over Bull Creek
PoorAllegheny County, Pennsylvania · 464001 Mill Street · Structure no. 000000000002687
- Built
- 1989
- 36 years old
- Condition
- Poor
- inspected June 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 72 ft
- 1 main span
- Daily traffic
- 250
- 2023 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
Mill ST over Bull Creek is a prestressed concrete box beam or girders - multiple carrying Mill ST over Bull Creek in Allegheny County, Pennsylvania. It was built in 1989, so it is 36 years old, younger 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 250 vehicles a day, roughly 5% of them trucks, projected to reach 295 by 2043. The structure is 72 ft (21.9 m) long and 32 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Mill ST over Bull Creek built?
It was built in 1989, making it 36 years old in 2025.
What condition is Mill ST over Bull Creek 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 June 2023.
How much traffic does Mill ST over Bull Creek carry?
About 250 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is Mill ST over Bull Creek?
The structure is 72 ft (21.9 m) long with a longest span of 69 ft (21 m) and a deck 32 ft wide.
Who owns Mill ST over Bull Creek?
It is owned by the Town or Township Highway Agency.