JOHN MOSBY HWY-NBL
Carrying JOHN MOSBY HWY-NBL over NS RAILWAY @ BOYCE
0.20 TO 682 - 0.11 TO 630, Clarke, Virginia
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: JOHN MOSBY HWY-NBL
The JOHN MOSBY HWY-NBL bridge in Clarke, Virginia carries JOHN MOSBY HWY-NBL over NS RAILWAY @ BOYCE. It was built in 1942, making it 84 years old today. The structure is built primarily of steel and spans 3 sections, stretching 48.5 meters (159 feet) end to end. Daily traffic averages 6,463 vehicles, placing it in the moderately-trafficked tier of Virginia bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 6/9, superstructure at 6/9, substructure at 5/9. 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 39.9 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How JOHN MOSBY HWY-NBL compares
Live comparison across Virginia.
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 How the historical reference is calculated.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
- 1942
- Material
- Steel
- Number of Spans
- 3
- Structure Length
- 48.5 m (159 ft)
- Deck Width
- 9.4 m (31 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 6,463 vehicles/day
- Structure Number
- 000000000005385
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.
- • The superstructure (beams and supports above the deck) rates fair at 6/9, minor deterioration that routine maintenance should address.
- • The substructure (piers and abutments) rates fair at 5/9, minor deterioration that routine maintenance should address.
How to read this record
This page shows what the last federal inspection recorded, not whether JOHN MOSBY HWY-NBL 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 JOHN MOSBY HWY-NBL against other structures in Clarke and across Virginia. Virginia 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 JOHN MOSBY HWY-NBL?
JOHN MOSBY HWY-NBL in Clarke, Virginia has a deck rating of 6/9, superstructure rating of 6/9, and substructure rating of 5/9 on the FHWA's 0–9 scale.
How often is JOHN MOSBY HWY-NBL inspected?
JOHN MOSBY HWY-NBL'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 6,463 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. JOHN MOSBY HWY-NBL 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 JOHN MOSBY HWY-NBL?
JOHN MOSBY HWY-NBL has an NBI inventory load rating of 39.9 metric tons.
Who is responsible for maintaining JOHN MOSBY HWY-NBL?
JOHN MOSBY HWY-NBL is owned and maintained by State Highway Agency.
How old is JOHN MOSBY HWY-NBL and does age affect safety?
JOHN MOSBY HWY-NBL was built in 1942, making it 84 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.