T407 Derrywoods DR over Unt to Swatara Creek
GoodDauphin County, Pennsylvania · Derry Woods Drive · Structure no. 000000000070061
- Built
- 1901
- 124 years old
- Condition
- Good
- inspected October 2023
- Type
- Culvert
- Concrete
- Length
- 23 ft
- 1 main span
- Daily traffic
- 200
- 2023 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
T407 Derrywoods DR over Unt to Swatara Creek is a concrete culvert carrying T407 Derrywoods DR over Unt to Swatara Creek in Dauphin County, Pennsylvania. It was built in 1901, so it is 124 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 200 vehicles a day, roughly 2% of them trucks, projected to reach 220 by 2043. The structure is 23 ft (7 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was T407 Derrywoods DR over Unt to Swatara Creek built?
It was built in 1901, making it 124 years old in 2025.
What condition is T407 Derrywoods DR over Unt to Swatara Creek 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 October 2023.
How much traffic does T407 Derrywoods DR over Unt to Swatara Creek carry?
About 200 vehicles per day (2023 count), of which roughly 2% are trucks.
How long is T407 Derrywoods DR over Unt to Swatara Creek?
The structure is 23 ft (7 m) long with a longest span of 23 ft (7 m) and a deck 34 ft wide.
Who owns T407 Derrywoods DR over Unt to Swatara Creek?
It is owned by the Town or Township Highway Agency.