I-35 HWY NB
Carrying I-35 HWY NB over RS2066, US50 HWY
2.57 MI EAST OF K-99, Lyon, Kansas
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: I-35 HWY NB
The I-35 HWY NB bridge in Lyon, Kansas carries I-35 HWY NB over RS2066, US50 HWY. It was built in 1967, making it 59 years old today. The structure is built primarily of steel continuous. Daily traffic averages 3,860 vehicles, placing it in the moderately-trafficked tier of Kansas bridges.
The latest FHWA inspection records show limited component ratings on file. The weakest component sits in unrated condition. All reported major components score above the Poor range.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How I-35 HWY NB compares
Live comparison across Kansas.
Historical Sufficiency Rating
PlainBridge-computedFHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.
Condition Ratings
Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.
Structural Details
- Year Built
- 1967
- Material
- Steel Continuous
- Avg Daily Traffic
- 3,860 vehicles/day
- Structure Number
- 999903500560161
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 I-35 HWY NB 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 I-35 HWY NB against other structures in Lyon and across Kansas. Kansas 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 I-35 HWY NB?
I-35 HWY NB in Lyon, Kansas on the FHWA's 0–9 scale.
How often is I-35 HWY NB inspected?
I-35 HWY NB'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 3,860 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. I-35 HWY NB is currently shown as unrated condition from its component ratings; that category is not a live closure or safety decision.
What is the inventory load rating for I-35 HWY NB?
An inventory load rating is not recorded for I-35 HWY NB.
Who is responsible for maintaining I-35 HWY NB?
Ownership is not specified for I-35 HWY NB in the NBI.
How old is I-35 HWY NB and does age affect safety?
I-35 HWY NB was built in 1967, making it 59 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.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.