Is 495 over Sligo Creek Parkway
FairMontgomery County, Maryland · 0.604 Mile East of Md 97 · Structure no. 100000150133010
- Built
- 1959
- 66 years old, rebuilt 2001
- Condition
- Fair
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 113 ft
- 3 main spans
- Daily traffic
- 232,010
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
Is 495 over Sligo Creek Parkway is a steel stringer/multi-beam or girder carrying Is 495 over Sligo Creek Parkway in Montgomery County, Maryland. It was built in 1959 and reconstructed in 2001, so it is 66 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 232,010 vehicles a day, roughly 12% of them trucks, projected to reach 233,070 by 2029. The structure is 113 ft (34.4 m) long and 144 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Is 495 over Sligo Creek Parkway built?
It was built in 1959, making it 66 years old in 2025. It was reconstructed in 2001.
What condition is Is 495 over Sligo Creek Parkway 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 2023.
How much traffic does Is 495 over Sligo Creek Parkway carry?
About 232,010 vehicles per day (2009 count), of which roughly 12% are trucks.
How long is Is 495 over Sligo Creek Parkway?
The structure is 113 ft (34.4 m) long with a longest span of 49 ft (14.9 m) and a deck 144 ft wide.
Who owns Is 495 over Sligo Creek Parkway?
It is owned by the State Highway Agency.