LORTON ROAD 642
Carrying LORTON ROAD 642 over POHICK CREEK
00.20FR1820/00.01TO1235, Fairfax, Virginia
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
LORTON ROAD 642 in Fairfax, Virginia is rated Good in the FHWA's 2024 National Bridge Inventory.
Built in 2005, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 7. The lowest applicable rating sets the federal condition category, so this Good result describes the weakest reported component rather than the structure as a whole. No NBI category is a closure decision or a live crossing-safety verdict.
NBI record plate
Structure VA:000000000027663
POST-2000 · STEEL · SINGLE-SPAN · TIED-CTRL · HEAVY-ADT · STANDARD-LOAD · CAT-GOOD
- POST-2000 2000+
- STEEL Steel
- SINGLE-SPAN Single span
- TIED-CTRL Tied control
- HEAVY-ADT Heavy ADT
- STANDARD-LOAD Standard load
- CAT-GOOD Good
Inspection-sheet codes from this record’s year, material family, spans, controlling component, ADT, inventory load, and NBI category, not a live closure verdict.
Bridge Snapshot: LORTON ROAD 642
The LORTON ROAD 642 bridge in Fairfax, Virginia carries LORTON ROAD 642 over POHICK CREEK. It was built in 2005, making it 21 years old today. The structure is built primarily of steel and spans 1 section, stretching 38.1 meters (125 feet) end to end. Daily traffic averages 20,514 vehicles, placing it in the heavily-trafficked tier of Virginia bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 7/9, substructure at 7/9. The weakest component sits in good condition. No reported major component scores in the Poor range under the current federal condition thresholds.
How LORTON ROAD 642 compares
Age against the county: built in 2005, earlier than 205 of Fairfax's 751 bridges with a recorded construction year (27%), against a county median build year of 1993. This is one of the newer structures in its county.
Live comparison across Virginia bridges with a recorded inventory load rating (14,112 of 14,120 rated).
LORTON ROAD 642 vs every rated Virginia bridge
Inventory load rating (metric tons), FHWA NBI, this state
34 Top 67% higher than 33% of 14,112 bridges
rated Virginia bridges, bucketed by value
Each bar is a band; taller bars hold more bridges. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source FHWA National Bridge Inventory · August 2026
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Reported 0–9 component ratings from the FHWA NBI. The highlighted component is the lowest reported input to this record’s current condition category; it is not a closure or live crossing-safety decision.
Fairfax inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 751 bridges in this county. Orthogonal to this structure's component profile above: a county catalog share, not a live crossing-safety verdict.
Structural Details
- Year Built
- 2005
- Material
- Steel
- Number of Spans
- 1
- Structure Length
- 38.1 m (125 ft)
- Deck Width
- 34.6 m (114 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 20,514 vehicles/day
- Structure Number
- 000000000027663
Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) rates good at 7/9, with no significant deterioration on file.
- • At 7/9, the substructure (piers and abutments) is in good shape and shows no significant wear.
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
This page shows what the last federal inspection recorded, not whether LORTON ROAD 642 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 LORTON ROAD 642 against other structures in Fairfax 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 LORTON ROAD 642?
LORTON ROAD 642 in Fairfax, Virginia has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 7/9 on the FHWA's 0–9 scale.
How often is LORTON ROAD 642 inspected?
LORTON ROAD 642'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 20,514 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. LORTON ROAD 642 is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for LORTON ROAD 642?
LORTON ROAD 642 has an NBI inventory load rating of 34.2 metric tons.
Who is responsible for maintaining LORTON ROAD 642?
LORTON ROAD 642 is owned and maintained by State Highway Agency.
How old is LORTON ROAD 642 and does age affect safety?
LORTON ROAD 642 was built in 2005, making it 21 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.
Share this inspection record
Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.
Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. Component ratings, ADT, and condition category on this page are copied from the NBI record for this structure; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.