Nj Rt 31 over Lehigh Valley Main Line
GoodHunterdon County, New Jersey · 1.95 MI N. of CO Rt 523 · Structure no. 1012155
- Built
- 2003
- 22 years old
- Condition
- Good
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 164 ft
- 3 main spans
- Daily traffic
- 27,439
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Nj Rt 31 over Lehigh Valley Main Line is a steel continuous stringer/multi-beam or girder carrying Nj Rt 31 over Lehigh Valley Main Line in Hunterdon County, New Jersey. It was built in 2003, so it is 22 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 27,439 vehicles a day, roughly 4% of them trucks, projected to reach 33,481 by 2044. The structure is 164 ft (50 m) long and 106 ft wide. If it were closed, the detour would be 3.1 mi (5 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. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nj Rt 31 over Lehigh Valley Main Line built?
It was built in 2003, making it 22 years old in 2025.
What condition is Nj Rt 31 over Lehigh Valley Main Line 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 August 2024.
How much traffic does Nj Rt 31 over Lehigh Valley Main Line carry?
About 27,439 vehicles per day (2024 count), of which roughly 4% are trucks.
How long is Nj Rt 31 over Lehigh Valley Main Line?
The structure is 164 ft (50 m) long with a longest span of 70 ft (21.3 m) and a deck 106 ft wide.
Who owns Nj Rt 31 over Lehigh Valley Main Line?
It is owned by the State Highway Agency.