I-78 Ramp a over Route 78
FairHunterdon County, New Jersey · .8 MI East of Rt 31 · Structure no. 1018150
- Built
- 1968
- 57 years old, rebuilt 2011
- Condition
- Fair
- inspected May 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 180 ft
- 2 main spans
- Daily traffic
- 2,239
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-78 Ramp a over Route 78 is a steel stringer/multi-beam or girder carrying I-78 Ramp a over Route 78 in Hunterdon County, New Jersey. It was built in 1968 and reconstructed in 2011, so it is 57 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 fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 2,239 vehicles a day, roughly 5% of them trucks, projected to reach 2,732 by 2044. The structure is 180 ft (54.9 m) long and 31 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-78 Ramp a over Route 78 built?
It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2011.
What condition is I-78 Ramp a over Route 78 in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in May 2024.
How much traffic does I-78 Ramp a over Route 78 carry?
About 2,239 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is I-78 Ramp a over Route 78?
The structure is 180 ft (54.9 m) long with a longest span of 86 ft (26.2 m) and a deck 31 ft wide.
Who owns I-78 Ramp a over Route 78?
It is owned by the State Highway Agency.