Is 270 over Middlebrook Road
FairMontgomery County, Maryland · 0.77 Mile South of Md 118 · Structure no. 100000150042010
- Built
- 1990
- 35 years old
- Condition
- Fair
- inspected June 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 145 ft
- 1 main span
- Daily traffic
- 133,720
- 2009 count
- Owner
- State
- State Highway Agency
About this bridge
Is 270 over Middlebrook Road is a steel stringer/multi-beam or girder carrying Is 270 over Middlebrook Road in Montgomery County, Maryland. It was built in 1990, so it is 35 years old, younger 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 133,720 vehicles a day, roughly 8% of them trucks, projected to reach 140,487 by 2026. The structure is 145 ft (44.2 m) long and 134 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 | 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 270 over Middlebrook Road built?
It was built in 1990, making it 35 years old in 2025.
What condition is Is 270 over Middlebrook Road 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 June 2023.
How much traffic does Is 270 over Middlebrook Road carry?
About 133,720 vehicles per day (2009 count), of which roughly 8% are trucks.
How long is Is 270 over Middlebrook Road?
The structure is 145 ft (44.2 m) long with a longest span of 140 ft (42.7 m) and a deck 134 ft wide.
Who owns Is 270 over Middlebrook Road?
It is owned by the State Highway Agency.