Mountain Road over Raritan Valley Line
PoorHunterdon County, New Jersey · 4.42MI SE I-78 & US22 JCT · Structure no. 1060155
- Built
- 1910
- 115 years old, rebuilt 1978
- Condition
- Poor
- inspected January 2023
- Type
- Truss - Thru
- Steel
- Length
- 108 ft
- 1 main span
- Daily traffic
- 520
- 2023 count
- Owner
- Unknown
- Unknown
About this bridge
Mountain Road over Raritan Valley Line is a steel truss - thru carrying Mountain Road over Raritan Valley Line in Hunterdon County, New Jersey. It was built in 1910 and reconstructed in 1978, so it is 115 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 520 vehicles a day, roughly 3% of them trucks, projected to reach 710 by 2043. The structure is 108 ft (32.9 m) long and 17 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Substructure | 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 Mountain Road over Raritan Valley Line built?
It was built in 1910, making it 115 years old in 2025. It was reconstructed in 1978.
What condition is Mountain Road over Raritan Valley Line 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 January 2023.
How much traffic does Mountain Road over Raritan Valley Line carry?
About 520 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is Mountain Road over Raritan Valley Line?
The structure is 108 ft (32.9 m) long with a longest span of 104 ft (31.7 m) and a deck 17 ft wide.
Who owns Mountain Road over Raritan Valley Line?
It is owned by the Unknown and maintained by the Other State Agency.