COUNTY RD X-31
Carrying COUNTY RD X-31 over MINO CREEK
085043404, Jones, Iowa
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
COUNTY RD X-31 in Jones, Iowa sits above 56% of rated Iowa bridges on inventory load rating (33 t), while its 1966 build year is earlier than 77% of Jones's recorded-year cohort (231 bridges).
COUNTY RD X-31 in Jones, Iowa is rated Poor in the FHWA's 2024 National Bridge Inventory. Built in 1966, it carries 1 rated component on the inspecting agency's 0-9 scale, and its weakest reported component scores 4. The lowest applicable rating sets the federal condition category, so this Poor 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 IA:000000000208650
INTERSTATE-ERA · STEEL · MULTI-SPAN · CULVERT-LED · LOCAL-ADT · STANDARD-LOAD · CAT-POOR
- INTERSTATE-ERA 1950–1979
- STEEL Steel
- MULTI-SPAN 2 spans
- CULVERT-LED Culvert-led
- LOCAL-ADT Local ADT
- STANDARD-LOAD Standard load
- CAT-POOR Poor
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: COUNTY RD X-31
The COUNTY RD X-31 bridge in Jones, Iowa carries COUNTY RD X-31 over MINO CREEK. It was built in 1966, making it 60 years old today. The structure is built primarily of steel and spans 2 sections, stretching 12.8 meters (42 feet) end to end. Daily traffic averages 520 vehicles, placing it in the lower-traffic tier of Iowa bridges. It is owned and maintained by County Highway Agency.
The latest FHWA inspection records show culvert at 4/9. The weakest component sits in poor condition. Because at least one major component scores 4 or lower, this bridge falls in FHWA's Poor condition category. That category is not a closure order.
How COUNTY RD X-31 compares
Age against the county: built in 1966, earlier than 178 of Jones's 231 bridges with a recorded construction year (77%), against a county median build year of 1983. Age is not a defect on its own, but it is the population from which future Poor ratings are drawn.
Live comparison across Iowa bridges with a recorded inventory load rating (23,718 of 23,719 rated).
COUNTY RD X-31 vs every rated Iowa bridge
Inventory load rating (metric tons), FHWA NBI, this state
33 Top 44% higher than 56% of 23,718 bridges
rated Iowa 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.
Jones inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 231 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
- 1966
- Material
- Steel
- Number of Spans
- 2
- Structure Length
- 12.8 m (42 ft) 0
- Owner
- County Highway Agency
- Avg Daily Traffic
- 520 vehicles/day
- Structure Number
- 000000000208650
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗How to read this record
COUNTY RD X-31 is in the federal Poor condition category. That is a component-based result, not a closure order.
- NBI condition ratings reflect the latest record in this annual dataset, not a live status. Current routine inspection intervals are risk-based.
- Understand what Poor condition does and does not mean before drawing conclusions. Poor condition explained
- Compare COUNTY RD X-31 against other structures in Jones and across Iowa. Iowa 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 COUNTY RD X-31?
COUNTY RD X-31 in Jones, Iowa on the FHWA's 0–9 scale.
How often is COUNTY RD X-31 inspected?
COUNTY RD X-31'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 520 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. COUNTY RD X-31 is currently shown as Poor condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for COUNTY RD X-31?
COUNTY RD X-31 has an NBI inventory load rating of 32.7 metric tons.
Who is responsible for maintaining COUNTY RD X-31?
COUNTY RD X-31 is owned and maintained by County Highway Agency.
How old is COUNTY RD X-31 and does age affect safety?
COUNTY RD X-31 was built in 1966, making it 60 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.