I-78 Eastbound over Washington Valley Road
FairSomerset County, New Jersey · 1.1 MI East of I-287 JCT · Structure no. 1817157
- Built
- 1965
- 60 years old, rebuilt 2024
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 205 ft
- 3 main spans
- Daily traffic
- 41,212
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-78 Eastbound over Washington Valley Road is a prestressed concrete stringer/multi-beam or girder carrying I-78 Eastbound over Washington Valley Road in Somerset County, New Jersey. It was built in 1965 and reconstructed in 2024, so it is 60 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 41,212 vehicles a day, roughly 9% of them trucks, projected to reach 50,286 by 2044. The structure is 205 ft (62.5 m) long and 75 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 | 8 Very Good | No problems noted. |
| 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 Eastbound over Washington Valley Road built?
It was built in 1965, making it 60 years old in 2025. It was reconstructed in 2024.
What condition is I-78 Eastbound over Washington Valley Road 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 July 2024.
How much traffic does I-78 Eastbound over Washington Valley Road carry?
About 41,212 vehicles per day (2024 count), of which roughly 9% are trucks.
How long is I-78 Eastbound over Washington Valley Road?
The structure is 205 ft (62.5 m) long with a longest span of 102 ft (31.1 m) and a deck 75 ft wide.
Who owns I-78 Eastbound over Washington Valley Road?
It is owned by the State Highway Agency.