MARIENDAHL ROAD
Carrying MARIENDAHL ROAD over TURPENTINE RUN
HWY 30, Unknown County, Virgin Islands
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
MARIENDAHL ROAD in Unknown County, Virgin Islands sits above 58% of rated Virgin Islands bridges on inventory load rating (33 t), while its 1985 build year is earlier than 33% of Unknown County's recorded-year cohort (3 bridges).
MARIENDAHL ROAD in Unknown County, Virgin Islands is rated Good in the FHWA's 2024 National Bridge Inventory. Built in 1985, it carries 1 rated component 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 VI:STT007
LATE-CENTURY · CONCRETE · MULTI-SPAN · CULVERT-LED · LOCAL-ADT · STANDARD-LOAD · CAT-GOOD
- LATE-CENTURY 1980–1999
- CONCRETE Concrete
- MULTI-SPAN 2 spans
- CULVERT-LED Culvert-led
- LOCAL-ADT Local 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: MARIENDAHL ROAD
The MARIENDAHL ROAD bridge in Unknown County, Virgin Islands carries MARIENDAHL ROAD over TURPENTINE RUN. It was built in 1985, making it 41 years old today. The structure is built primarily of concrete and spans 2 sections, stretching 7.7 meters (25 feet) end to end. Daily traffic averages 500 vehicles, placing it in the lower-traffic tier of Virgin Islands bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show culvert 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 MARIENDAHL ROAD compares
Age against the county: built in 1985, earlier than 1 of Unknown County's 3 bridges with a recorded construction year (33%), against a county median build year of 1985.
Live comparison across Virgin Islands bridges with a recorded inventory load rating (24 rated).
MARIENDAHL ROAD vs every rated Virgin Islands bridge
Inventory load rating (metric tons), FHWA NBI, this state
33 Top 42% higher than 58% of 24 bridges
rated Virgin Islands 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.
Unknown County inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 3 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
- 1985
- Material
- Concrete
- Number of Spans
- 2
- Structure Length
- 7.7 m (25 ft)
- Deck Width
- 10.7 m (35 ft)
- Owner
- State Highway Agency
- Avg Daily Traffic
- 500 vehicles/day
- Structure Number
- STT007
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 MARIENDAHL ROAD 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 MARIENDAHL ROAD against other structures in Unknown County and across Virgin Islands. Virgin Islands 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 MARIENDAHL ROAD?
MARIENDAHL ROAD in Unknown County, Virgin Islands on the FHWA's 0–9 scale.
How often is MARIENDAHL ROAD inspected?
MARIENDAHL ROAD'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 500 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. MARIENDAHL ROAD 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 MARIENDAHL ROAD?
MARIENDAHL ROAD has an NBI inventory load rating of 32.7 metric tons.
Who is responsible for maintaining MARIENDAHL ROAD?
MARIENDAHL ROAD is owned and maintained by State Highway Agency.
How old is MARIENDAHL ROAD and does age affect safety?
MARIENDAHL ROAD was built in 1985, making it 41 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.