Perring Pkwy Ramp over Herring Run
PoorBaltimore city, Maryland · On Ramp WB Northern Pkwy · Structure no. 200000BC3203010
- Built
- 1965
- 60 years old
- Condition
- Poor
- inspected December 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 203 ft
- 3 main spans
- Daily traffic
- 75,220
- 2024 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Perring Pkwy Ramp over Herring Run is a steel stringer/multi-beam or girder carrying Perring Pkwy Ramp over Herring Run in Baltimore city, Maryland. It was built in 1965, so it is 60 years old, older than the Maryland average of 52.6 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 75,220 vehicles a day, roughly 5% of them trucks, projected to reach 93,618 by 2044. The structure is 203 ft (61.9 m) long and 29 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Perring Pkwy Ramp over Herring Run built?
It was built in 1965, making it 60 years old in 2025.
What condition is Perring Pkwy Ramp over Herring Run in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in December 2024.
How much traffic does Perring Pkwy Ramp over Herring Run carry?
About 75,220 vehicles per day (2024 count), of which roughly 5% are trucks.
How long is Perring Pkwy Ramp over Herring Run?
The structure is 203 ft (61.9 m) long with a longest span of 66 ft (20.1 m) and a deck 29 ft wide.
Who owns Perring Pkwy Ramp over Herring Run?
It is owned by the City or Municipal Highway Agency.