I-78 Westbound over Pfld Ave & Green Brook
FairSomerset County, New Jersey · 1.79 MI East of CR 531 · Structure no. 1817180
- Built
- 1966
- 59 years old
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 502 ft
- 4 main spans
- Daily traffic
- 51,186
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-78 Westbound over Pfld Ave & Green Brook is a steel stringer/multi-beam or girder carrying I-78 Westbound over Pfld Ave & Green Brook in Somerset County, New Jersey. It was built in 1966, so it is 59 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 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 51,186 vehicles a day, roughly 9% of them trucks, projected to reach 62,456 by 2044. The structure is 502 ft (153 m) long and 56 ft wide. If it were closed, the detour would be 1.9 mi (3 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. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-78 Westbound over Pfld Ave & Green Brook built?
It was built in 1966, making it 59 years old in 2025.
What condition is I-78 Westbound over Pfld Ave & Green 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 August 2024.
How much traffic does I-78 Westbound over Pfld Ave & Green Brook carry?
About 51,186 vehicles per day (2024 count), of which roughly 9% are trucks.
How long is I-78 Westbound over Pfld Ave & Green Brook?
The structure is 502 ft (153 m) long with a longest span of 123 ft (37.5 m) and a deck 56 ft wide.
Who owns I-78 Westbound over Pfld Ave & Green Brook?
It is owned by the State Highway Agency.