US 9 over Manasquan River
FairMonmouth County, New Jersey · 1.3MI. So. of Co. Rt. 524 · Structure no. 1301150
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected March 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 65 ft
- 1 main span
- Daily traffic
- 50,245
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US 9 over Manasquan River is a prestressed concrete box beam or girders - multiple carrying US 9 over Manasquan River in Monmouth County, New Jersey. It was built in 1974, so it is 51 years old, younger 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 50,245 vehicles a day, roughly 4% of them trucks, projected to reach 60,294 by 2044. The structure is 65 ft (19.8 m) long and 100 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 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 US 9 over Manasquan River built?
It was built in 1974, making it 51 years old in 2025.
What condition is US 9 over Manasquan 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 March 2024.
How much traffic does US 9 over Manasquan River carry?
About 50,245 vehicles per day (2024 count), of which roughly 4% are trucks.
How long is US 9 over Manasquan River?
The structure is 65 ft (19.8 m) long with a longest span of 63 ft (19.2 m) and a deck 100 ft wide.
Who owns US 9 over Manasquan River?
It is owned by the State Highway Agency.