Fdr 17 over Burnt Knoll
PoorCarroll County, New Hampshire · Map 24 · Structure no. 092205000001063
- Built
- 1975
- 50 years old
- Condition
- Poor
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 24 ft
- 1 main span
- Daily traffic
- 100
- 2010 count
- Owner
- Federal
- U.S. Forest Service
About this bridge
Fdr 17 over Burnt Knoll is a wood or timber stringer/multi-beam or girder carrying Fdr 17 over Burnt Knoll in Carroll County, New Hampshire. It was built in 1975, so it is 50 years old, younger than the New Hampshire average of 56.9 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 100 vehicles a day, roughly 5% of them trucks, projected to reach 150 by 2045. The structure is 24 ft (7.3 m) long and 16 ft wide. If it were closed, the detour would be 98.2 mi (158 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Fdr 17 over Burnt Knoll built?
It was built in 1975, making it 50 years old in 2025.
What condition is Fdr 17 over Burnt Knoll 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 October 2023.
How much traffic does Fdr 17 over Burnt Knoll carry?
About 100 vehicles per day (2010 count), of which roughly 5% are trucks.
How long is Fdr 17 over Burnt Knoll?
The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 16 ft wide.
Who owns Fdr 17 over Burnt Knoll?
It is owned by the U.S. Forest Service.