Cedar Knolls RD over I-287 & Whippany River
FairMorris County, New Jersey · 0.3 MI No of Rt 24 JCT · Structure no. 1419187
- Built
- 1973
- 52 years old
- Condition
- Fair
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 315 ft
- 3 main spans
- Daily traffic
- 815
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Cedar Knolls RD over I-287 & Whippany River is a steel stringer/multi-beam or girder carrying Cedar Knolls RD over I-287 & Whippany River in Morris County, New Jersey. It was built in 1973, so it is 52 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 815 vehicles a day, roughly 4% of them trucks, projected to reach 990 by 2044. The structure is 315 ft (96 m) long and 61 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 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Cedar Knolls RD over I-287 & Whippany River built?
It was built in 1973, making it 52 years old in 2025.
What condition is Cedar Knolls RD over I-287 & Whippany 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 Cedar Knolls RD over I-287 & Whippany River carry?
About 815 vehicles per day (2024 count), of which roughly 4% are trucks.
How long is Cedar Knolls RD over I-287 & Whippany River?
The structure is 315 ft (96 m) long with a longest span of 100 ft (30.5 m) and a deck 61 ft wide.
Who owns Cedar Knolls RD over I-287 & Whippany River?
It is owned by the State Highway Agency.