I-78 WB over Trib to Dead River
FairSomerset County, New Jersey · 4.5 MI East of I-287 · Structure no. 1817164
- Built
- 1965
- 60 years old
- Condition
- Fair
- inspected July 2024
- Type
- Slab
- Concrete
- Length
- 29 ft
- 1 main span
- Daily traffic
- 50,883
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-78 WB over Trib to Dead River is a concrete slab carrying I-78 WB over Trib to Dead River in Somerset County, New Jersey. It was built in 1965, 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 50,883 vehicles a day, roughly 9% of them trucks, projected to reach 62,086 by 2044. The structure is 29 ft (8.8 m) long and 57 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 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 Trib to Dead River built?
It was built in 1965, making it 60 years old in 2025.
What condition is I-78 WB over Trib to Dead River 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 WB over Trib to Dead River carry?
About 50,883 vehicles per day (2024 count), of which roughly 9% are trucks.
How long is I-78 WB over Trib to Dead River?
The structure is 29 ft (8.8 m) long with a longest span of 25 ft (7.6 m) and a deck 57 ft wide.
Who owns I-78 WB over Trib to Dead River?
It is owned by the State Highway Agency.