I-78 Ramp "a" over Beaver Brook
FairHunterdon County, New Jersey · .5 Mi.W of I-78 W Exit 18 · Structure no. 1018151
- Built
- 1968
- 57 years old
- Condition
- Fair
- inspected May 2024
- Type
- Culvert
- Concrete
- Length
- 31 ft
- 1 main span
- Daily traffic
- 5,685
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-78 Ramp "a" over Beaver Brook is a concrete culvert carrying I-78 Ramp "a" over Beaver Brook in Hunterdon County, New Jersey. It was built in 1968, 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 5,685 vehicles a day, roughly 9% of them trucks, projected to reach 6,937 by 2044. The structure is 31 ft (9.4 m) long. 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 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 Beaver Brook built?
It was built in 1968, making it 57 years old in 2025.
What condition is I-78 Ramp "a" over Beaver Brook 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 Beaver Brook carry?
About 5,685 vehicles per day (2024 count), of which roughly 9% are trucks.
How long is I-78 Ramp "a" over Beaver Brook?
The structure is 31 ft (9.4 m) long with a longest span of 31 ft (9.4 m).
Who owns I-78 Ramp "a" over Beaver Brook?
It is owned by the State Highway Agency.