SR 4001 over Armstrong Creek
PoorDauphin County, Pennsylvania · 3.5 MI S W Elizabethville · Structure no. 000000000014570
- Built
- 1974
- 51 years old
- Condition
- Poor
- inspected August 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 42 ft
- 1 main span
- Daily traffic
- 522
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SR 4001 over Armstrong Creek is a prestressed concrete box beam or girders - multiple carrying SR 4001 over Armstrong Creek in Dauphin County, Pennsylvania. It was built in 1974, so it is 51 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 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.
It carries about 522 vehicles a day, roughly 4% of them trucks, projected to reach 748 by 2032. The structure is 42 ft (12.8 m) long and 40 ft wide. If it were closed, the detour would be 5 mi (8 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 4001 over Armstrong Creek built?
It was built in 1974, making it 51 years old in 2025.
What condition is SR 4001 over Armstrong 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 August 2024.
How much traffic does SR 4001 over Armstrong Creek carry?
About 522 vehicles per day (2024 count), of which roughly 4% are trucks.
How long is SR 4001 over Armstrong Creek?
The structure is 42 ft (12.8 m) long with a longest span of 42 ft (12.8 m) and a deck 40 ft wide.
Who owns SR 4001 over Armstrong Creek?
It is owned by the State Highway Agency.