MAR CO RT. 20
Carrying MAR CO RT. 20 over DUNKARD MILL RUN
0.10 mi. N of Mar. 20/2, Marion, West Virginia
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
MAR CO RT. 20 in Marion, West Virginia sits above 52% of rated West Virginia bridges on inventory load rating (41 t), while its 2011 build year is earlier than 9% of Marion's recorded-year cohort (193 bridges).
MAR CO RT. 20 in Marion, West Virginia is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 2011, 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 WV:00000000025A265
POST-2000 · PRESTRESS · SINGLE-SPAN · SUB-LED · LOCAL-ADT · HEAVY-LOAD · CAT-FAIR
- POST-2000 2000+
- PRESTRESS Prestressed concrete
- SINGLE-SPAN Single span
- SUB-LED Substructure-led
- LOCAL-ADT Local ADT
- HEAVY-LOAD Heavy 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: MAR CO RT. 20
The MAR CO RT. 20 bridge in Marion, West Virginia carries MAR CO RT. 20 over DUNKARD MILL RUN. It was built in 2011, making it 15 years old today. The structure is built primarily of prestressed concrete and spans 1 section, stretching 13.0 meters (43 feet) end to end. Daily traffic averages 550 vehicles, placing it in the lower-traffic tier of West 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 6/9. The weakest component sits in fair condition. No reported major component scores in the Poor range under the current federal condition thresholds.
How MAR CO RT. 20 compares
Age against the county: built in 2011, earlier than 18 of Marion's 193 bridges with a recorded construction year (9%), against a county median build year of 1988. This is one of the newer structures in its county.
Live comparison across West Virginia bridges with a recorded inventory load rating (7,347 of 7,348 rated).
MAR CO RT. 20 vs every rated West Virginia bridge
Inventory load rating (metric tons), FHWA NBI, this state
41 Top 48% higher than 52% of 7,347 bridges
rated West 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.
Marion inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 193 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
- 2011
- Material
- Prestressed Concrete
- Number of Spans
- 1
- Structure Length
- 13.0 m (43 ft)
- Deck Width
- 6.5 m (21 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 550 vehicles/day
- Structure Number
- 00000000025A265
Condition Analysis
- • The deck (driving surface) is in good condition (7/9), showing no significant deterioration.
- • The superstructure (beams and supports above the deck) is in good condition (7/9), showing no significant deterioration.
- • The substructure (piers and abutments) rates fair at 6/9, minor deterioration that routine maintenance should address.
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 MAR CO RT. 20 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 MAR CO RT. 20 against other structures in Marion and across West Virginia. West 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 MAR CO RT. 20?
MAR CO RT. 20 in Marion, West Virginia has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is MAR CO RT. 20 inspected?
MAR CO RT. 20'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 550 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. MAR CO RT. 20 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 MAR CO RT. 20?
MAR CO RT. 20 has an NBI inventory load rating of 40.8 metric tons.
Who is responsible for maintaining MAR CO RT. 20?
MAR CO RT. 20 is owned and maintained by State Highway Agency.
How old is MAR CO RT. 20 and does age affect safety?
MAR CO RT. 20 was built in 2011, making it 15 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.