Red Mill Road over Spruce Run
GoodHunterdon County, New Jersey · .25 Mi.E.Mt.Airy Rd.Jct. · Structure no. 1000086
- Built
- 1892
- 133 years old, rebuilt 1991
- Condition
- Good
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 48 ft
- 1 main span
- Daily traffic
- 242
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Red Mill Road over Spruce Run is a steel stringer/multi-beam or girder carrying Red Mill Road over Spruce Run in Hunterdon County, New Jersey. It was built in 1892 and reconstructed in 1991, so it is 133 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 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 242 vehicles a day, roughly 3% of them trucks, projected to reach 295 by 2043. The structure is 48 ft (14.6 m) long and 26 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 |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| 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 Red Mill Road over Spruce Run built?
It was built in 1892, making it 133 years old in 2025. It was reconstructed in 1991.
What condition is Red Mill Road over Spruce Run 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 April 2023.
How much traffic does Red Mill Road over Spruce Run carry?
About 242 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Red Mill Road over Spruce Run?
The structure is 48 ft (14.6 m) long with a longest span of 46 ft (14 m) and a deck 26 ft wide.
Who owns Red Mill Road over Spruce Run?
It is owned by the County Highway Agency.