IRRFB ND HIGHWAY 8
Carrying IRRFB ND HIGHWAY 8 over HANS CREEK
9 NORTH JCT. ND 200, Dunn, North Dakota
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
IRRFB ND HIGHWAY 8 in Dunn, North Dakota sits above 63% of rated North Dakota bridges on inventory load rating (35 t), while its 1971 build year is earlier than 80% of Dunn's recorded-year cohort (74 bridges).
IRRFB ND HIGHWAY 8 in Dunn, North Dakota is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1971, it carries 1 rated component 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 ND:0008122306
INTERSTATE-ERA · CONCRETE · LONG-SPAN-RUN · CULVERT-LED · LOCAL-ADT · STANDARD-LOAD · CAT-FAIR
- INTERSTATE-ERA 1950–1979
- CONCRETE Concrete
- LONG-SPAN-RUN 4 spans
- CULVERT-LED Culvert-led
- LOCAL-ADT Local 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: IRRFB ND HIGHWAY 8
The IRRFB ND HIGHWAY 8 bridge in Dunn, North Dakota carries IRRFB ND HIGHWAY 8 over HANS CREEK. It was built in 1971, making it 55 years old today. The structure is built primarily of concrete and spans 4 sections, stretching 12.8 meters (42 feet) end to end. Daily traffic averages 180 vehicles, placing it in the lower-traffic tier of North Dakota bridges. It is owned and maintained by State Highway Agency.
The latest FHWA inspection records show culvert 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 IRRFB ND HIGHWAY 8 compares
Age against the county: built in 1971, earlier than 59 of Dunn's 74 bridges with a recorded construction year (80%), against a county median build year of 1989. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across North Dakota bridges with a recorded inventory load rating (4,249 of 4,255 rated).
IRRFB ND HIGHWAY 8 vs every rated North Dakota bridge
Inventory load rating (metric tons), FHWA NBI, this state
35 Top 37% higher than 63% of 4,249 bridges
rated North Dakota 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.
Dunn inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 74 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
- 1971
- Material
- Concrete
- Number of Spans
- 4
- Structure Length
- 12.8 m (42 ft) 0
- Owner
- State Highway Agency
- Avg Daily Traffic
- 180 vehicles/day
- Structure Number
- 0008122306
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 IRRFB ND HIGHWAY 8 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 IRRFB ND HIGHWAY 8 against other structures in Dunn and across North Dakota. North Dakota 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 IRRFB ND HIGHWAY 8?
IRRFB ND HIGHWAY 8 in Dunn, North Dakota on the FHWA's 0–9 scale.
How often is IRRFB ND HIGHWAY 8 inspected?
IRRFB ND HIGHWAY 8'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 180 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. IRRFB ND HIGHWAY 8 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 IRRFB ND HIGHWAY 8?
IRRFB ND HIGHWAY 8 has an NBI inventory load rating of 35.1 metric tons.
Who is responsible for maintaining IRRFB ND HIGHWAY 8?
IRRFB ND HIGHWAY 8 is owned and maintained by State Highway Agency.
How old is IRRFB ND HIGHWAY 8 and does age affect safety?
IRRFB ND HIGHWAY 8 was built in 1971, making it 55 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.