Is 270 over Md 117
FairMontgomery County, Maryland · 0.62 Mile South of Md 124 · Structure no. 100000150045010
- Built
- 1954
- 71 years old, rebuilt 1987
- Condition
- Fair
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 123 ft
- 3 main spans
- Daily traffic
- 171,940
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
Is 270 over Md 117 is a steel stringer/multi-beam or girder carrying Is 270 over Md 117 in Montgomery County, Maryland. It was built in 1954 and reconstructed in 1987, 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 171,940 vehicles a day, roughly 8% of them trucks, projected to reach 185,631 by 2026. The structure is 123 ft (37.5 m) long and 135 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 | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Is 270 over Md 117 built?
It was built in 1954, making it 71 years old in 2025. It was reconstructed in 1987.
What condition is Is 270 over Md 117 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 October 2023.
How much traffic does Is 270 over Md 117 carry?
About 171,940 vehicles per day (2009 count), of which roughly 8% are trucks.
How long is Is 270 over Md 117?
The structure is 123 ft (37.5 m) long with a longest span of 55 ft (16.8 m) and a deck 135 ft wide.
Who owns Is 270 over Md 117?
It is owned by the State Highway Agency.