Marriottsville RD over South Br Patapsco River
GoodCarroll County, Maryland · On Howard County Line · Structure no. 200000CL0332010
- Built
- 1986
- 39 years old
- Condition
- Good
- inspected August 2023
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 140 ft
- 2 main spans
- Daily traffic
- 12,255
- 2021 count
- Owner
- County
- County Highway Agency
About this bridge
Marriottsville RD over South Br Patapsco River is a steel stringer/multi-beam or girder carrying Marriottsville RD over South Br Patapsco River in Carroll County, Maryland. It was built in 1986, so it is 39 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 12,255 vehicles a day, roughly 8% of them trucks, projected to reach 20,090 by 2041. The structure is 140 ft (42.6 m) long and 39 ft wide. If it were closed, the detour would be 6.8 mi (11 km).
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. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Marriottsville RD over South Br Patapsco River built?
It was built in 1986, making it 39 years old in 2025.
What condition is Marriottsville RD over South Br Patapsco River 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 August 2023.
How much traffic does Marriottsville RD over South Br Patapsco River carry?
About 12,255 vehicles per day (2021 count), of which roughly 8% are trucks.
How long is Marriottsville RD over South Br Patapsco River?
The structure is 140 ft (42.6 m) long with a longest span of 66 ft (20.1 m) and a deck 39 ft wide.
Who owns Marriottsville RD over South Br Patapsco River?
It is owned by the County Highway Agency.