PERRING PKWY RAMP
Carrying PERRING PKWY RAMP over HERRING RUN
ON RAMP WB NORTHERN PKWY, Baltimore city, Maryland
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: PERRING PKWY RAMP
The PERRING PKWY RAMP bridge in Baltimore city, Maryland carries PERRING PKWY RAMP over HERRING RUN. It was built in 1965, making it 61 years old today. The structure is built primarily of steel and spans 3 sections, stretching 61.9 meters (203 feet) end to end. Daily traffic averages 74,402 vehicles, placing it in the heavily-trafficked tier of Maryland bridges. It is owned and maintained by City/Municipal Highway Agency.
The latest FHWA inspection records show a deck rating of 4/9, superstructure at 3/9, substructure at 5/9. The weakest component sits in poor condition. At least one major component here scores 4 or below, which produces a Poor condition classification under FHWA's current reporting rules. Its NBI inventory load rating is 55.3 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How PERRING PKWY RAMP compares
Live comparison across Maryland.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1965
- Material
- Steel
- Number of Spans
- 3
- Structure Length
- 61.9 m (203 ft)
- Deck Width
- 8.7 m (29 ft)
- Owner
- City/Municipal Highway Agency
- Avg Daily Traffic
- 74,402 vehicles/day
- Structure Number
- 200000BC3203010
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • The deck (driving surface) rates poor at 4/9, advanced deterioration that should be prioritized for repair.
- • The superstructure (beams and supports above the deck) rates poor at 3/9, advanced deterioration that should be prioritized for repair.
- • The substructure (piers and abutments) rates fair at 5/9, minor deterioration that routine maintenance should address.
How to read this record
PERRING PKWY RAMP is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare PERRING PKWY RAMP against other structures in Baltimore city and across Maryland. Maryland bridges
- Noticed visible damage or a safety concern? Report it to the agency that owns the bridge, or call 911 in an emergency. How to report a bridge
Condition codes come straight from the FHWA National Bridge Inventory and are not a real-time safety judgment. Only the owning agency, a state DOT, county, or other owner, can post, restrict, or close a bridge.
Frequently Asked Questions
What do the condition ratings mean for PERRING PKWY RAMP?
PERRING PKWY RAMP in Baltimore city, Maryland has a deck rating of 4/9, superstructure rating of 3/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is PERRING PKWY RAMP inspected?
PERRING PKWY RAMP's responsible agency sets its routine interval under FHWA's risk-based inspection rules; this page does not expose the scheduled interval. It carries about 74,402 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. PERRING PKWY RAMP is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for PERRING PKWY RAMP?
PERRING PKWY RAMP has an NBI inventory load rating of 55.3 metric tons.
Who is responsible for maintaining PERRING PKWY RAMP?
PERRING PKWY RAMP is owned and maintained by City/Municipal Highway Agency.
How old is PERRING PKWY RAMP and does age affect safety?
PERRING PKWY RAMP was built in 1965, making it 61 years old.
Disclaimer: Bridge condition data is from the FHWA NBI and reflects the last reported inspection. A Poor condition rating is not a live declaration that a bridge is closed or unsafe for travel. For current closure, posting, or safety information, contact the responsible transportation agency.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.