FHWA NBI 2024 Inspection record Public-domain dataset

CTY RD L 945-476.8

Carrying CTY RD L 945-476.8 over STREAM

4.0N OF ALLEN, Lyon, Kansas

Data updated May 2026

FHWA NBI record, refreshed with each annual release.

Good
23 t Inventory load rating

Bridge Snapshot: CTY RD L 945-476.8

The CTY RD L 945-476.8 bridge in Lyon, Kansas carries CTY RD L 945-476.8 over STREAM. It was built in 1977, making it 49 years old today. The structure is built primarily of concrete and spans 1 section, stretching 6.1 meters (20 feet) end to end. Daily traffic averages 25 vehicles, placing it in the lower-traffic tier of Kansas bridges. It is owned and maintained by County Highway Agency.

The latest FHWA inspection records show culvert at 7/9. The weakest component sits in good condition. None of this bridge's reported major components fall into the Poor condition range. Its NBI inventory load rating is 22.7 metric tons.

Sourced from the FHWA National Bridge Inventory. See our methodology for refresh cadence and NBI release vintage.

How CTY RD L 945-476.8 compares

▼ 6.4
Load rating vs Kansas average (29.1 t)
Bottom 37%
Lower load rating than 63% of Kansas bridges
493
Bridges in Lyon · 5 in Poor condition
CTY RD L 945-476.8 22.7 t
Kansas average 29.1 t

Live comparison across Kansas.

Historical Sufficiency Rating

PlainBridge-computed
88.2 / 100 - historical 80–100 band
Structural adequacy /55
45.2
Serviceability /30
30.0
Essentiality /15
15.0
Special reductions
−2.0

FHWA discontinued this calculated item; it does not determine current condition, funding eligibility, posting, or closure. How the historical reference is calculated.

Condition Ratings

Culvert
7/9
Good (7–9)
Inventory Load Rating
22.7 t
NBI inventory level (metric tons)
Overall Condition
Good

Full 0–9 scale + sufficiency-rating breakdown: how condition ratings work.

Structural Details

Year Built
1977
Material
Concrete
Number of Spans
1
Structure Length
6.1 m (20 ft)
Deck Width
10.7 m (35 ft)
Owner
County Highway Agency
Avg Daily Traffic
25 vehicles/day
Structure Number
000000000560270

How to read this record

This page shows what the last federal inspection recorded, not whether CTY RD L 945-476.8 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 CTY RD L 945-476.8 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 CTY RD L 945-476.8?

CTY RD L 945-476.8 in Lyon, Kansas on the FHWA's 0–9 scale.

How often is CTY RD L 945-476.8 inspected?

CTY RD L 945-476.8'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 25 vehicles per day.

What does “structurally deficient” mean in older bridge reports?

FHWA retired that reported status beginning with the 2018 archive. CTY RD L 945-476.8 is currently shown as Good condition from its component ratings; that category is not a live closure or safety decision.

What is the inventory load rating for CTY RD L 945-476.8?

CTY RD L 945-476.8 has an NBI inventory load rating of 22.7 metric tons.

Who is responsible for maintaining CTY RD L 945-476.8?

CTY RD L 945-476.8 is owned and maintained by County Highway Agency.

How old is CTY RD L 945-476.8 and does age affect safety?

CTY RD L 945-476.8 was built in 1977, making it 49 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.

Data sourced from the Federal Highway Administration National Bridge Inventory. See our methodology for details. Retrieved and formatted by PlainBridges

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.