I-78 Eastbound over I-78 Ramp "a"
PoorSomerset County, New Jersey · 0.3 MI West of I-287 JCT · Structure no. 1817150
- Built
- 1963
- 62 years old
- Condition
- Poor
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 166 ft
- 1 main span
- Daily traffic
- 60,048
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
I-78 Eastbound over I-78 Ramp "a" is a steel stringer/multi-beam or girder carrying I-78 Eastbound over I-78 Ramp "a" in Somerset County, New Jersey. It was built in 1963, 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 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 60,048 vehicles a day, roughly 14% of them trucks, projected to reach 73,270 by 2044. The structure is 166 ft (50.6 m) long and 45 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 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 Eastbound over I-78 Ramp "a" built?
It was built in 1963, making it 62 years old in 2025.
What condition is I-78 Eastbound over I-78 Ramp "a" 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 October 2024.
How much traffic does I-78 Eastbound over I-78 Ramp "a" carry?
About 60,048 vehicles per day (2024 count), of which roughly 14% are trucks.
How long is I-78 Eastbound over I-78 Ramp "a"?
The structure is 166 ft (50.6 m) long with a longest span of 150 ft (45.7 m) and a deck 45 ft wide.
Who owns I-78 Eastbound over I-78 Ramp "a"?
It is owned by the State Highway Agency.