Total bridges
78
Public highway bridges in Lyon County
County profile · official public datasets
Lyon County, KY
78 public highway bridges tracked in the FHWA National Bridge Inventory: 25.6% rated Good, 70.5% Fair, 3.8% Poor.
- 78
- Public bridges
- 25.6%
- Good condition
- 3.8%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Lyon County pairs a top-quartile lowest Poor-condition share among rated counties in the state with an older average build year than the state inventory.
- Top 18%
- lowest Poor share in state
- 3.8%
- Poor-condition share
- 78
- public highway bridges
- 1972
- 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.
Lyon County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Lyon County ranks #22 of 120 Kentucky counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 3.8%). Lyon County, Kentucky contains 78 public highway bridges. Roughly 25.6% are rated “Good,” 70.5% “Fair,” and 3.8% “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
25.6%
20 of 78 rated 7-9
Fair condition
70.5%
55 of 78 rated 5-6
Poor condition
3.8%
3 of 78 rated 4 or below
In-state Poor-share rank
#22 of 120
Among Kentucky counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 78 NBI-tracked bridges by lowest applicable component rating.
Good 25.6% (20)
Fair 70.5% (55)
Poor 3.8% (3)
Lyon County's Poor-condition bridges carry 891 vehicle crossings a day
That is 0.3% of the county's reported daily bridge traffic on 3.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 297 crossings a day against 2,623 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 78 of 78 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
38.5% of Lyon County's bridges have passed the 50-year mark
30 of the 78 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 25.6% 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 75.8% of the county's Poor-condition bridge traffic
KY-295 over LIVINGSTON CREEK, built 1938, carries 675 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 3-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 891 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Lyon County's bridges were built
78 bridges with a recorded construction year, grouped by decade
- 1920s 3
1920–1929
3 bridges
- 1930s 8
1930–1939
8 bridges
- 1940s 2
1940–1949
2 bridges
- 1950s 1
1950–1959
1 bridges
- 1960s 11
1960–1969
11 bridges
- 1970s
1970–1979
35 bridges
- 1980s 6
1980–1989
6 bridges
- 1990s 7
1990–1999
7 bridges
- 2000s 1
2000–2009
1 bridges
- 2010s 3
2010–2019
3 bridges
- 2020s 1
2020–2029
1 bridges
What this shows Construction peaked in the 1970s, when 35 of the county's bridges still in the inventory were built, which is 44.9% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year is 1972, 6 years older than the Kentucky average of 1978.
How Lyon County compares with Kentucky's closest counties by inventory size
The 5 Kentucky counties nearest Lyon County in number of bridges, with their condition splits. Its 3.8% Poor share is the 2nd-lowest of these 6. Its average build year of 1972 against a peer-group mean of 1978 is 6 years older.
Showing the 5 closest of 119 Kentucky counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Todd County | 80 | 16.3% | 76.3% | 7.5% | 1972 |
| Grant County | 79 | 55.7% | 38% | 6.3% | 1988 |
| Metcalfe County | 78 | 10.3% | 87.2% | 2.6% | 1975 |
| Lyon County (this page) | 78 | 25.6% | 70.5% | 3.8% | 1972 |
| Wolfe County | 77 | 54.5% | 41.6% | 3.9% | 1979 |
| Wayne County | 76 | 22.4% | 61.8% | 15.8% | 1978 |
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 Lyon 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 Lyon County, both outside Kentucky so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside KY (78 bridges here).
- Winston County, AL · 78 bridges
- Marion County, FL · 78 bridges
- Bryan County, GA · 78 bridges
- Macon County, GA · 78 bridges
Similar average build year
Nearest mean year-built outside KY (1972 here).
- Santa Clara County, CA · avg 1972 · 964 bridges
- Madison County, AL · avg 1972 · 710 bridges
- Kern County, CA · avg 1972 · 668 bridges
- York County, PA · avg 1972 · 569 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Good-condition bridges (20)
KY-730
GoodOver: EDDY CREEK
1.4 MI SOU. OF JCT KY 293, Lyon, KY
Built 1964 Load: 23.9 t ADT: 142
LBL ROAD 130
GoodOver: SMITH CREEK
LBL, Lyon, KY
Built 2014 Load: 25.3 t ADT: 50
I-24
GoodOver: PORT AUTHORITY RD
EBL 1 MI E OF WK PKY NTRC, Lyon, KY
Built 1977 Load: 25.9 t ADT: 11,994
PARRISH ROAD
GoodOver: UNNAMED STREAM
0.1 MI S. OF US 62, Lyon, KY
Built 2000 Load: 28.9 t ADT: 19
KY-6019
GoodOver: I 24
2 MI E OF JCT KY 93, Lyon, KY
Built 1977 Load: 31.6 t ADT: 110
KY-1199
GoodOver: BREWSTER CREEK
.2 MI. W JCT C5 5022, Lyon, KY
Built 1997 Load: 33.4 t ADT: 119
I-24
GoodOver: US 62
EBL OVR US 62 NTRCH, Lyon, KY
Built 1977 Load: 34.5 t ADT: 14,006
KY-810
GoodOver: I-24 @ MP. 036.406
1 MI N OF JCT US 62, Lyon, KY
Built 1977 Load: 34.7 t ADT: 352
I-24
GoodOver: KY 93
EBL 1 MI W OF US 62 NTRCH, Lyon, KY
Built 1977 Load: 36.3 t ADT: 13,295
GLEN CHAPEL ROAD
GoodOver: CRAB CREEK
.5 MI W JCT KY 373, Lyon, KY
Built 1990 Load: 38.4 t ADT: 89
KY-373
GoodOver: CRAB CREEK
.02 MI NOR. OF ICG RR UP, Lyon, KY
Built 1936 Load: 40.8 t ADT: 546
KY-293
GoodOver: I-24 @ MP. 044.693
.25 MI E OF JCT KY 93, Lyon, KY
Built 1977 Load: 40.9 t ADT: 2,738
KY-93
GoodOver: I-24 @ MP. 043.711
.6 MI N OF JCT KY 293, Lyon, KY
Built 1977 Load: 41.6 t ADT: 4,566
KY-6010
GoodOver: I-24 @ MP. 037.288
.5 MI S OF JCT KY 93, Lyon, KY
Built 1977 Load: 42.0 t ADT: 38
KY-6008
GoodOver: I-24 @ MP. 035.289
2.5 MI N OF JCT US 62, Lyon, KY
Built 1977 Load: 42.2 t ADT: 39
U.S. 62
GoodOver: OVER P&L RAILROAD
1.0 MI EASTJCT.U.S 641, Lyon, KY
Built 2016 Load: 48.6 t ADT: 4,068
BENNETT JONES RD
GoodOver: SKINFRAME CREEK
1.4 MI SW OF KY 1943, Lyon, KY
Built 2014 Load: 52.2 t ADT: 68
JOE PEEK ROAD
GoodOver: CRAB CREEK
.6 MI. E-JCT. KY 295, Lyon, KY
Built 1982 Load: 52.3 t ADT: 26
KY-1943
GoodOver: CRAB CREEK
.50 MI WEST OF JCT KY-373, Lyon, KY
Built 2023 Load: 53.5 t ADT: 159
BILL THOMPSON ROAD
GoodOver: SPRING CREEK
1.2 MI. W. KY 295, Lyon, KY
Built 1980 Load: 65.3 t ADT: 26
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.