I-78 Westbound over Tributary of Dead River
PoorSomerset County, New Jersey · 0.27 MI W / I-287 Exit 36 · Structure no. 1817167
- Built
- 1965
- 60 years old, rebuilt 1986
- Condition
- Poor
- inspected April 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 48 ft
- 1 main span
- Daily traffic
- 50,135
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-78 Westbound over Tributary of Dead River is a prestressed concrete stringer/multi-beam or girder carrying I-78 Westbound over Tributary of Dead River in Somerset County, New Jersey. It was built in 1965 and reconstructed in 1986, 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 50,135 vehicles a day, roughly 9% of them trucks, projected to reach 61,175 by 2044. The structure is 48 ft (14.6 m) long and 58 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 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Tributary of Dead River built?
It was built in 1965, making it 60 years old in 2025. It was reconstructed in 1986.
What condition is I-78 Westbound over Tributary of Dead River in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2024.
How much traffic does I-78 Westbound over Tributary of Dead River carry?
About 50,135 vehicles per day (2024 count), of which roughly 9% are trucks.
How long is I-78 Westbound over Tributary of Dead River?
The structure is 48 ft (14.6 m) long with a longest span of 42 ft (12.8 m) and a deck 58 ft wide.
Who owns I-78 Westbound over Tributary of Dead River?
It is owned by the State Highway Agency.