MD ROUTE 450
Carrying MD ROUTE 450 over BW PARKWAY
0.3 MILES NORTH OF MD ROU, Prince George's, Maryland
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: MD ROUTE 450
The MD ROUTE 450 bridge in Prince George's, Maryland carries MD ROUTE 450 over BW PARKWAY. It was built in 1953, making it 73 years old today. The structure is built primarily of concrete continuous and spans 2 sections, stretching 38.5 meters (126 feet) end to end. Daily traffic averages 50,300 vehicles, placing it in the heavily-trafficked tier of Maryland bridges. It is owned and maintained by National Park Service.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 6/9, substructure at 6/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 22.7 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How MD ROUTE 450 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 How the historical reference is calculated.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
- 1953
- Material
- Concrete Continuous
- Number of Spans
- 2
- Structure Length
- 38.5 m (126 ft)
- Deck Width
- 25.5 m (84 ft)
- Owner
- National Park Service
- Avg Daily Traffic
- 50,300 vehicles/day
- Structure Number
- 3530016P0000000
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 6/9, the deck (driving surface) shows fair condition, with minor wear flagged for upkeep.
- • At 6/9, the superstructure (beams and supports above the deck) shows fair condition, with minor wear flagged for upkeep.
- • At 6/9, the substructure (piers and abutments) shows fair condition, with minor wear flagged for upkeep.
How to read this record
This page shows what the last federal inspection recorded, not whether MD ROUTE 450 is safe to cross today. Here is how to use it.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Learn how the 0–9 condition scale and Good/Fair/Poor categories are defined. How condition ratings work
- Compare MD ROUTE 450 against other structures in Prince George's 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 MD ROUTE 450?
MD ROUTE 450 in Prince George's, Maryland has a deck rating of 6/9, superstructure rating of 6/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is MD ROUTE 450 inspected?
MD ROUTE 450'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 50,300 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. MD ROUTE 450 is currently shown as Fair condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for MD ROUTE 450?
MD ROUTE 450 has an NBI inventory load rating of 22.7 metric tons.
Who is responsible for maintaining MD ROUTE 450?
MD ROUTE 450 is owned and maintained by National Park Service.
How old is MD ROUTE 450 and does age affect safety?
MD ROUTE 450 was built in 1953, making it 73 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.