FHWA NBI 2024 Inspection record Public-domain dataset

SHIRLEY MEM. HIWAY

Carrying SHIRLEY MEM. HIWAY over ACCOTINK CREEK

01.76 642 / 01.30 286, Fairfax, Virginia

Inventory: FHWA NBI 2024 · last ETL August 2026

FHWA NBI record, refreshed with each annual release.

Fair
37 t Inventory load rating Lower than 63% of rated Virginia bridges

SHIRLEY MEM. HIWAY in Fairfax, Virginia sits above 37% of rated Virginia bridges on inventory load rating (37 t), while its 1993 build year is earlier than 48% of Fairfax's recorded-year cohort (751 bridges).

SHIRLEY MEM. HIWAY in Fairfax, Virginia is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1993, it carries 3 rated components on the inspecting agency's 0-9 scale, and its weakest reported component scores 6. The lowest applicable rating sets the federal condition category, so this Fair 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:000000000006429

LATE-CENTURY · STEEL · MULTI-SPAN · TIED-CTRL · HEAVY-ADT · STANDARD-LOAD · CAT-FAIR

  • LATE-CENTURY 1980–1999
  • STEEL Steel
  • MULTI-SPAN 2 spans
  • TIED-CTRL Tied control
  • HEAVY-ADT Heavy ADT
  • STANDARD-LOAD Standard load
  • CAT-FAIR Fair

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: SHIRLEY MEM. HIWAY

The SHIRLEY MEM. HIWAY bridge in Fairfax, Virginia carries SHIRLEY MEM. HIWAY over ACCOTINK CREEK. It was built in 1993, making it 33 years old today. The structure is built primarily of steel continuous and spans 2 sections, stretching 49.4 meters (162 feet) end to end. Daily traffic averages 232,853 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 6/9, superstructure at 6/9, substructure at 6/9. The weakest component sits in fair condition. All reported major components score above the Poor range.

How SHIRLEY MEM. HIWAY compares

▼ 9.4
Load rating vs Virginia average (46.6 t; 14,112 of 14,120 rated)
751
Bridges in Fairfax · 8 in Poor condition

Age against the county: built in 1993, earlier than 360 of Fairfax's 751 bridges with a recorded construction year (48%), against a county median build year of 1993.

SHIRLEY MEM. HIWAY 37.2 t
Virginia average (14,112 of 14,120 rated) 46.6 t

Live comparison across Virginia bridges with a recorded inventory load rating (14,112 of 14,120 rated).

SHIRLEY MEM. HIWAY vs every rated Virginia bridge

Inventory load rating (metric tons), FHWA NBI, this state

37 Top 63% higher than 37% 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

Deck
6/9
Fair (5–6)
Superstructure
6/9
Fair (5–6)
Substructure
6/9
Fair (5–6)
Inventory Load Rating
37.2 t
NBI inventory level (metric tons)
Overall Condition
Fair

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
1993
Material
Steel Continuous
Number of Spans
2
Structure Length
49.4 m (162 ft)
Deck Width
60.1 m (197 ft)
Owner
State Highway Agency
Avg Daily Traffic
232,853 vehicles/day
Structure Number
000000000006429

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.
  • The substructure (piers and abutments) rates fair at 6/9, minor deterioration that routine maintenance should address.

How to read this record

This page shows what the last federal inspection recorded, not whether SHIRLEY MEM. HIWAY 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 SHIRLEY MEM. HIWAY 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 SHIRLEY MEM. HIWAY?

SHIRLEY MEM. HIWAY in Fairfax, Virginia 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 SHIRLEY MEM. HIWAY inspected?

SHIRLEY MEM. HIWAY'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 232,853 vehicles per day.

What does “structurally deficient” mean in older bridge reports?

FHWA retired that reported status beginning with the 2018 archive. SHIRLEY MEM. HIWAY 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 SHIRLEY MEM. HIWAY?

SHIRLEY MEM. HIWAY has an NBI inventory load rating of 37.2 metric tons.

Who is responsible for maintaining SHIRLEY MEM. HIWAY?

SHIRLEY MEM. HIWAY is owned and maintained by State Highway Agency.

How old is SHIRLEY MEM. HIWAY and does age affect safety?

SHIRLEY MEM. HIWAY was built in 1993, making it 33 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.

Data sourced from the Federal Highway Administration National Bridge Inventory. See our methodology for details. Retrieved and formatted by PlainBridges

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Send this source-bounded record or download its data card. An NBI condition category is not a closure or live crossing-safety verdict.

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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.