I-78 WB over Delaware River
FairWarren County, New Jersey · I-78 at Phillipsburg · Structure no. 3300275
- Built
- 1989
- 36 years old
- Condition
- Fair
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 1,226 ft
- 7 main spans
- Daily traffic
- 33,485
- 2021 count
- Owner
- Toll Authority
- Local Toll Authority
About this bridge
I-78 WB over Delaware River is a steel continuous stringer/multi-beam or girder carrying I-78 WB over Delaware River in Warren County, New Jersey. It was built in 1989, so it is 36 years old, younger 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 33,485 vehicles a day, roughly 24% of them trucks, projected to reach 40,858 by 2041. The structure is 1,226 ft (373.7 m) long and 52 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 | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was I-78 WB over Delaware River built?
It was built in 1989, making it 36 years old in 2025.
What condition is I-78 WB over Delaware 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 May 2023.
How much traffic does I-78 WB over Delaware River carry?
About 33,485 vehicles per day (2021 count), of which roughly 24% are trucks.
How long is I-78 WB over Delaware River?
The structure is 1,226 ft (373.7 m) long with a longest span of 228 ft (69.5 m) and a deck 52 ft wide.
Who owns I-78 WB over Delaware River?
It is owned by the Local Toll Authority.