A50 260TH ST
Carrying A50 260TH ST over SMALL STREAM
098483103, Lyon, Iowa
Inventory: FHWA NBI 2024 · last ETL August 2026
FHWA NBI record, refreshed with each annual release.
A50 260TH ST in Lyon, Iowa sits above 31% of rated Iowa bridges on inventory load rating (25 t), while its 1968 build year is earlier than 66% of Lyon's recorded-year cohort (276 bridges).
A50 260TH ST in Lyon, Iowa is rated Fair in the FHWA's 2024 National Bridge Inventory. Built in 1968, 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 IA:000000000229515
INTERSTATE-ERA · CONCRETE · MULTI-SPAN · CULVERT-LED · LOCAL-ADT · STANDARD-LOAD · CAT-FAIR
- INTERSTATE-ERA 1950–1979
- CONCRETE Concrete
- MULTI-SPAN 2 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: A50 260TH ST
The A50 260TH ST bridge in Lyon, Iowa carries A50 260TH ST over SMALL STREAM. It was built in 1968, making it 58 years old today. The structure is built primarily of concrete and spans 2 sections, stretching 6.1 meters (20 feet) end to end. Daily traffic averages 888 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 6/9. The weakest component sits in fair condition. None of this bridge's reported major components fall into the Poor condition range.
How A50 260TH ST compares
Age against the county: built in 1968, earlier than 182 of Lyon's 276 bridges with a recorded construction year (66%), against a county median build year of 1977. 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).
A50 260TH ST vs every rated Iowa bridge
Inventory load rating (metric tons), FHWA NBI, this state
25 Top 69% higher than 31% 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.
Lyon inventory by recorded NBI category
Exclusive Good/Fair/Poor bands across all 276 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
- 1968
- Material
- Concrete
- Number of Spans
- 2
- Structure Length
- 6.1 m (20 ft) 0
- Owner
- County Highway Agency
- Avg Daily Traffic
- 888 vehicles/day
- Structure Number
- 000000000229515
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 A50 260TH ST 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 A50 260TH ST against other structures in Lyon 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 A50 260TH ST?
A50 260TH ST in Lyon, Iowa on the FHWA's 0–9 scale.
How often is A50 260TH ST inspected?
A50 260TH ST'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 888 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. A50 260TH ST 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 A50 260TH ST?
A50 260TH ST has an NBI inventory load rating of 24.5 metric tons.
Who is responsible for maintaining A50 260TH ST?
A50 260TH ST is owned and maintained by County Highway Agency.
How old is A50 260TH ST and does age affect safety?
A50 260TH ST was built in 1968, making it 58 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.