Main Street over Flat Brook
PoorClosed to trafficSussex County, New Jersey · Off of NPS Road 615 (walp · Structure no. 4320040P0000000
- Built
- 1889
- 136 years old, rebuilt 2013
- Condition
- Poor
- inspected January 2024
- Type
- Truss - Thru
- Steel
- Length
- 69 ft
- 1 main span
- Daily traffic
- 302
- 2022 count
- Owner
- Federal
- National Park Service
About this bridge
Main Street over Flat Brook is a steel truss - thru carrying Main Street over Flat Brook in Sussex County, New Jersey. It was built in 1889 and reconstructed in 2013, so it is 136 years old, older than the New Jersey average of 58.5 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. Its operating status is: closed to all traffic.
It carries about 302 vehicles a day, roughly 10% of them trucks, projected to reach 362 by 2042. The structure is 69 ft (20.9 m) long and 12 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 | 7 Good | Some minor problems. |
| 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Main Street over Flat Brook built?
It was built in 1889, making it 136 years old in 2025. It was reconstructed in 2013.
What condition is Main Street over Flat Brook 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 January 2024.
How much traffic does Main Street over Flat Brook carry?
About 302 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is Main Street over Flat Brook?
The structure is 69 ft (20.9 m) long with a longest span of 67 ft (20.4 m) and a deck 12 ft wide.
Who owns Main Street over Flat Brook?
It is owned by the National Park Service.