Nj Route 34 over Big Brook
PoorMonmouth County, New Jersey · 3.7 MI N of Nj 18 JCT · Structure no. 1308154
- Built
- 1930
- 95 years old
- Condition
- Poor
- inspected May 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 39 ft
- 1 main span
- Daily traffic
- 12,608
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Nj Route 34 over Big Brook is a steel stringer/multi-beam or girder carrying Nj Route 34 over Big Brook in Monmouth County, New Jersey. It was built in 1930, so it is 95 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 12,608 vehicles a day, roughly 4% of them trucks, projected to reach 15,129 by 2043. The structure is 39 ft (11.9 m) long and 54 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 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| 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 Nj Route 34 over Big Brook built?
It was built in 1930, making it 95 years old in 2025.
What condition is Nj Route 34 over Big Brook 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 May 2023.
How much traffic does Nj Route 34 over Big Brook carry?
About 12,608 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is Nj Route 34 over Big Brook?
The structure is 39 ft (11.9 m) long with a longest span of 36 ft (11 m) and a deck 54 ft wide.
Who owns Nj Route 34 over Big Brook?
It is owned by the State Highway Agency.