I-335 HWY (KTA) SB
Carrying I-335 HWY (KTA) SB over ELM CREEK
1.19 MI NE US-56, Lyon, Kansas
Data updated May 2026
FHWA NBI record, refreshed with each annual release.
Bridge Snapshot: I-335 HWY (KTA) SB
The I-335 HWY (KTA) SB bridge in Lyon, Kansas carries I-335 HWY (KTA) SB over ELM CREEK. It was built in 1956, making it 70 years old today. It was last reconstructed in 1985, extending its service life. The structure is built primarily of steel continuous and spans 3 sections, stretching 87.8 meters (288 feet) end to end. Daily traffic averages 5,650 vehicles, placing it in the moderately-trafficked tier of Kansas bridges. It is owned and maintained by State Toll Authority.
The latest FHWA inspection records show a deck rating of 7/9, superstructure at 7/9, substructure at 6/9. The weakest component sits in fair condition. All reported major components score above the Poor range. Its NBI inventory load rating is 29.1 metric tons.
Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.
How I-335 HWY (KTA) SB 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 How the historical reference is calculated.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
- 1956
- Last Reconstructed
- 1985
- Material
- Steel Continuous
- Number of Spans
- 3
- Structure Length
- 87.8 m (288 ft)
- Deck Width
- 10.5 m (34 ft)
- Owner
- State Toll Authority
- Avg Daily Traffic
- 5,650 vehicles/day
- Structure Number
- 999933500561063
Location
Data Source
FHWA National Bridge Inventory (NBI).
FHWA NBI Program ↗Condition Analysis
- • At 7/9, the deck (driving surface) is in good shape and shows no significant wear.
- • The superstructure (beams and supports above the deck) rates good at 7/9, with no significant deterioration on file.
- • The substructure (piers and abutments) is in fair condition (6/9), with minor deterioration that may require routine maintenance.
How to read this record
This page shows what the last federal inspection recorded, not whether I-335 HWY (KTA) SB 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-335 HWY (KTA) SB 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-335 HWY (KTA) SB?
I-335 HWY (KTA) SB in Lyon, Kansas has a deck rating of 7/9, superstructure rating of 7/9, and substructure rating of 6/9 on the FHWA's 0–9 scale.
How often is I-335 HWY (KTA) SB inspected?
I-335 HWY (KTA) SB'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 5,650 vehicles per day.
What does “structurally deficient” mean in older bridge reports?
FHWA retired that reported status beginning with the 2018 archive. I-335 HWY (KTA) SB 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 I-335 HWY (KTA) SB?
I-335 HWY (KTA) SB has an NBI inventory load rating of 29.1 metric tons.
Who is responsible for maintaining I-335 HWY (KTA) SB?
I-335 HWY (KTA) SB is owned and maintained by State Toll Authority.
How old is I-335 HWY (KTA) SB and does age affect safety?
I-335 HWY (KTA) SB was built in 1956, making it 70 years old and last reconstructed in 1985.
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.