Total bridges
25
Public highway bridges in Lane County
County profile · official public datasets
Lane County, KS
25 public highway bridges tracked in the FHWA National Bridge Inventory: 60% rated Good, 36% Fair, 4% Poor.
- 25
- Public bridges
- 60%
- Good condition
- 4%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Lane County pairs a better-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.
- Top 47%
- lowest Poor share in state
- 4%
- Poor-condition share
- 25
- public highway bridges
- 1958
- avg year built
Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.
Lane County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Lane County ranks #49 of 104 Kansas counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 4%). Lane County, Kansas contains 25 public highway bridges. Roughly 60% are rated “Good,” 36% “Fair,” and 4% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Good condition
60%
15 of 25 rated 7-9
Fair condition
36%
9 of 25 rated 5-6
Poor condition
4%
1 of 25 rated 4 or below
In-state Poor-share rank
#49 of 104
Among Kansas counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 25 NBI-tracked bridges by lowest applicable component rating.
Good 60% (15)
Fair 36% (9)
Poor 4% (1)
Lane County's Poor-condition bridges carry 1,490 vehicle crossings a day
That is 19.3% of the county's reported daily bridge traffic on 4% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 1,490 crossings a day against 264 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.
Computed over the 25 of 25 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
92% of Lane County's bridges have passed the 50-year mark
23 of the 25 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 60% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.
Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.
One structure carries 100% of the county's Poor-condition bridge traffic
K23 HWY over SOUTH FORK WALNUT CREEK, built 1936, carries 1,490 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 1-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 1,490 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Lane County's bridges were built
25 bridges with a recorded construction year, grouped by decade
- 1930s
1930–1939
4 bridges
- 1950s
1950–1959
9 bridges
- 1960s
1960–1969
10 bridges
- 1980s 1
1980–1989
1 bridges
- 1990s 1
1990–1999
1 bridges
What this shows Construction peaked in the 1960s, when 10 of the county's bridges still in the inventory were built, which is 40% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1958, 14 years older than the Kansas average of 1972.
How Lane County compares with Kansas's closest counties by inventory size
The 5 Kansas counties nearest Lane County in number of bridges, with their condition splits. Its 4% Poor share is the 6th-lowest of these 6. Its average build year of 1958 against a peer-group mean of 1961 is in line with the group.
Showing the 5 closest of 103 Kansas counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Greeley County | 33 | 63.6% | 36.4% | 0% | 1959 |
| Lane County (this page) | 25 | 60% | 36% | 4% | 1958 |
| Scott County | 22 | 81.8% | 18.2% | 0% | 1954 |
| Wichita County | 22 | 59.1% | 40.9% | 0% | 1969 |
| Stanton County | 21 | 33.3% | 66.7% | 0% | 1969 |
| Haskell County | 18 | 66.7% | 33.3% | 0% | 1955 |
Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Lane County's. Source: FHWA National Bridge Inventory, 2024 release.
Nationwide counties with similar inventory size or average build year
Two NBI-derived peer sets for Lane County, both outside Kansas so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside KS (25 bridges here).
- Kodiak Island County, AK · 25 bridges
- Schley County, GA · 25 bridges
- Benzie County, MI · 25 bridges
- Otsego County, MI · 25 bridges
Similar average build year
Nearest mean year-built outside KS (1958 here).
- Middlesex County, MA · avg 1958 · 818 bridges
- Bucks County, PA · avg 1958 · 699 bridges
- Butte County, CA · avg 1958 · 437 bridges
- Marin County, CA · avg 1958 · 207 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Poor-condition bridges (1)
Read our methodology - how this data is sourced, computed, and verified.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges
Every figure on PlainBridges 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. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.