Md 586 over Rock Creek
FairMontgomery County, Maryland · 1.68 Miles East of Md 28 · Structure no. 100000150063010
- Built
- 1954
- 71 years old, rebuilt 1986
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 104 ft
- 2 main spans
- Daily traffic
- 41,271
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Md 586 over Rock Creek is a steel stringer/multi-beam or girder carrying Md 586 over Rock Creek in Montgomery County, Maryland. It was built in 1954 and reconstructed in 1986, so it is 71 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 41,271 vehicles a day, roughly 8% of them trucks, projected to reach 53,675 by 2043. The structure is 104 ft (31.7 m) long and 96 ft wide. 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 |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Md 586 over Rock Creek built?
It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1986.
What condition is Md 586 over 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 Md 586 over Rock Creek carry?
About 41,271 vehicles per day (2023 count), of which roughly 8% are trucks.
How long is Md 586 over Rock Creek?
The structure is 104 ft (31.7 m) long with a longest span of 48 ft (14.6 m) and a deck 96 ft wide.
Who owns Md 586 over Rock Creek?
It is owned by the State Highway Agency.