Main St. (rt 527) over Delaware & Raritan Canal
PoorSomerset County, New Jersey · 1.56 MI North of I-287 · Structure no. 3000168
- Built
- 1920
- 105 years old, rebuilt 2002
- Condition
- Poor
- inspected April 2024
- Type
- Girder and Floorbeam System
- Steel
- Length
- 94 ft
- 2 main spans
- Daily traffic
- 14,000
- 2024 count
- Owner
- State
- Other State Agency
About this bridge
Main St. (rt 527) over Delaware & Raritan Canal is a steel girder and floorbeam system carrying Main St. (rt 527) over Delaware & Raritan Canal in Somerset County, New Jersey. It was built in 1920 and reconstructed in 2002, so it is 105 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 3 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 14,000 vehicles a day, roughly 4% of them trucks, projected to reach 171,500 by 2044. The structure is 94 ft (28.7 m) long and 33 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Main St. (rt 527) over Delaware & Raritan Canal built?
It was built in 1920, making it 105 years old in 2025. It was reconstructed in 2002.
What condition is Main St. (rt 527) over Delaware & Raritan Canal 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 Main St. (rt 527) over Delaware & Raritan Canal carry?
About 14,000 vehicles per day (2024 count), of which roughly 4% are trucks.
How long is Main St. (rt 527) over Delaware & Raritan Canal?
The structure is 94 ft (28.7 m) long with a longest span of 49 ft (14.9 m) and a deck 33 ft wide.
Who owns Main St. (rt 527) over Delaware & Raritan Canal?
It is owned by the Other State Agency and maintained by the State Highway Agency.