US Rt 9 over Deep Run Brook
FairMiddlesex County, New Jersey · 1.13 Miles No. of Rt. 18 · Structure no. 1206151
- Built
- 1940
- 85 years old, rebuilt 1973
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 35 ft
- 1 main span
- Daily traffic
- 86,421
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US Rt 9 over Deep Run Brook is a steel stringer/multi-beam or girder carrying US Rt 9 over Deep Run Brook in Middlesex County, New Jersey. It was built in 1940 and reconstructed in 1973, so it is 85 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 86,421 vehicles a day, roughly 4% of them trucks, projected to reach 105,451 by 2043. The structure is 35 ft (10.7 m) long and 154 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, 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 US Rt 9 over Deep Run Brook built?
It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1973.
What condition is US Rt 9 over Deep Run Brook 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 July 2023.
How much traffic does US Rt 9 over Deep Run Brook carry?
About 86,421 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is US Rt 9 over Deep Run Brook?
The structure is 35 ft (10.7 m) long with a longest span of 31 ft (9.4 m) and a deck 154 ft wide.
Who owns US Rt 9 over Deep Run Brook?
It is owned by the State Highway Agency.