I-78 WB over I-287 NB
FairSomerset County, New Jersey · At I-287 Interchange · Structure no. 1817154
- Built
- 1963
- 62 years old, rebuilt 1986
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 145 ft
- 3 main spans
- Daily traffic
- 58,896
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-78 WB over I-287 NB is a steel stringer/multi-beam or girder carrying I-78 WB over I-287 NB in Somerset County, New Jersey. It was built in 1963 and reconstructed in 1986, so it is 62 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 5 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 58,896 vehicles a day, roughly 9% of them trucks, projected to reach 71,864 by 2044. The structure is 145 ft (44.2 m) long and 45 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-78 WB over I-287 NB built?
It was built in 1963, making it 62 years old in 2025. It was reconstructed in 1986.
What condition is I-78 WB over I-287 NB 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 September 2024.
How much traffic does I-78 WB over I-287 NB carry?
About 58,896 vehicles per day (2024 count), of which roughly 9% are trucks.
How long is I-78 WB over I-287 NB?
The structure is 145 ft (44.2 m) long with a longest span of 89 ft (27.1 m) and a deck 45 ft wide.
Who owns I-78 WB over I-287 NB?
It is owned by the State Highway Agency.