Is 370 over Md 355
GoodMontgomery County, Maryland · 1.18 Mile East of Is 270 · Structure no. 100000150154013
- Built
- 1989
- 36 years old, rebuilt 2011
- Condition
- Good
- inspected November 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 153 ft
- 1 main span
- Daily traffic
- 79,062
- 2010 count
- Owner
- State
- State Highway Agency
About this bridge
Is 370 over Md 355 is a steel stringer/multi-beam or girder carrying Is 370 over Md 355 in Montgomery County, Maryland. It was built in 1989 and reconstructed in 2011, so it is 36 years old, younger than the Maryland average of 52.6 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 79,062 vehicles a day, roughly 8% of them trucks, projected to reach 96,758 by 2030. The structure is 153 ft (46.6 m) long and 150 ft wide.
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Is 370 over Md 355 built?
It was built in 1989, making it 36 years old in 2025. It was reconstructed in 2011.
What condition is Is 370 over Md 355 in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2023.
How much traffic does Is 370 over Md 355 carry?
About 79,062 vehicles per day (2010 count), of which roughly 8% are trucks.
How long is Is 370 over Md 355?
The structure is 153 ft (46.6 m) long with a longest span of 148 ft (45.1 m) and a deck 150 ft wide.
Who owns Is 370 over Md 355?
It is owned by the State Highway Agency.