SR 4006 over Armstrong Creek
PoorClosed to trafficDauphin County, Pennsylvania · .5 Mi. S. Fisherville · Structure no. 000000000014585
- Built
- 1920
- 105 years old
- Condition
- Poor
- inspected August 2024
- Type
- Arch - Deck
- Concrete
- Length
- 44 ft
- 1 main span
- Daily traffic
- 312
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
SR 4006 over Armstrong Creek is a concrete arch - deck carrying SR 4006 over Armstrong Creek in Dauphin County, Pennsylvania. It was built in 1920, so it is 105 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 1 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: closed to all traffic.
It carries about 312 vehicles a day, roughly 10% of them trucks, projected to reach 263 by 2032. The structure is 44 ft (13.4 m) long and 16 ft wide. If it were closed, the detour would be 6.8 mi (11 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 |
|---|---|---|
| Superstructure | 1 Imminent Failure | Major deterioration or section loss present in critical structural components. Bridge is closed to traffic but corrective action may put it back in light service. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR 4006 over Armstrong Creek built?
It was built in 1920, making it 105 years old in 2025.
What condition is SR 4006 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 4006 over Armstrong Creek carry?
About 312 vehicles per day (2024 count), of which roughly 10% are trucks.
How long is SR 4006 over Armstrong Creek?
The structure is 44 ft (13.4 m) long with a longest span of 44 ft (13.4 m) and a deck 16 ft wide.
Who owns SR 4006 over Armstrong Creek?
It is owned by the State Highway Agency.