Millbrook Road over Flat Brook
GoodSussex County, New Jersey · At Intersection of Nj Rou · Structure no. 4320021P0000000
- Built
- 1988
- 37 years old
- Condition
- Good
- inspected January 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 92 ft
- 1 main span
- Daily traffic
- 204
- 2022 count
- Owner
- Federal
- National Park Service
About this bridge
Millbrook Road over Flat Brook is a prestressed concrete stringer/multi-beam or girder carrying Millbrook Road over Flat Brook in Sussex County, New Jersey. It was built in 1988, so it is 37 years old, younger than the New Jersey average of 58.5 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 204 vehicles a day, roughly 13% of them trucks, projected to reach 245 by 2042. The structure is 92 ft (28.1 m) long and 28 ft wide. If it were closed, the detour would be 26.7 mi (43 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Millbrook Road over Flat Brook built?
It was built in 1988, making it 37 years old in 2025.
What condition is Millbrook Road over Flat Brook 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 January 2024.
How much traffic does Millbrook Road over Flat Brook carry?
About 204 vehicles per day (2022 count), of which roughly 13% are trucks.
How long is Millbrook Road over Flat Brook?
The structure is 92 ft (28.1 m) long with a longest span of 89 ft (27.1 m) and a deck 28 ft wide.
Who owns Millbrook Road over Flat Brook?
It is owned by the National Park Service.