Is 495 over Br of Rock Creek
FairMontgomery County, Maryland · 0.6 Mile East of Md 355 · Structure no. 100000150141030
- Built
- 1958
- 67 years old, rebuilt 1964
- Condition
- Fair
- inspected August 2024
- Type
- Culvert
- Steel
- Length
- 22 ft
- Daily traffic
- 238,050
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
Is 495 over Br of Rock Creek is a steel culvert carrying Is 495 over Br of Rock Creek in Montgomery County, Maryland. It was built in 1958 and reconstructed in 1964, so it is 67 years old, older than the Maryland average of 52.6 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 238,050 vehicles a day, roughly 8% of them trucks, projected to reach 357,075 by 2029. The structure is 22 ft (6.7 m) long. 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 |
|---|---|---|
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Is 495 over Br of Rock Creek built?
It was built in 1958, making it 67 years old in 2025. It was reconstructed in 1964.
What condition is Is 495 over Br of Rock Creek 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 2024.
How much traffic does Is 495 over Br of Rock Creek carry?
About 238,050 vehicles per day (2009 count), of which roughly 8% are trucks.
How long is Is 495 over Br of Rock Creek?
The structure is 22 ft (6.7 m) long with a longest span of 9 ft (2.7 m).
Who owns Is 495 over Br of Rock Creek?
It is owned by the State Highway Agency.