CR 518 over Millstone River
FairSomerset County, New Jersey · 0.12 MI W.Of CR603 · Structure no. 18F0201
- Built
- 1924
- 101 years old, rebuilt 1986
- Condition
- Fair
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 135 ft
- 4 main spans
- Daily traffic
- 9,344
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
CR 518 over Millstone River is a steel continuous stringer/multi-beam or girder carrying CR 518 over Millstone River in Somerset County, New Jersey. It was built in 1924 and reconstructed in 1986, so it is 101 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 fair condition with a lowest component rating of 5 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 9,344 vehicles a day, roughly 4% of them trucks, projected to reach 11,213 by 2043. The structure is 135 ft (41.1 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 CR 518 over Millstone River built?
It was built in 1924, making it 101 years old in 2025. It was reconstructed in 1986.
What condition is CR 518 over Millstone 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 August 2023.
How much traffic does CR 518 over Millstone River carry?
About 9,344 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is CR 518 over Millstone River?
The structure is 135 ft (41.1 m) long with a longest span of 33 ft (10.1 m) and a deck 33 ft wide.
Who owns CR 518 over Millstone River?
It is owned by the County Highway Agency.