Total bridges
246
Public highway bridges in Jackson County
County profile · official public datasets
Jackson County, KS
246 public highway bridges tracked in the FHWA National Bridge Inventory: 36.2% rated Good, 56.9% Fair, 6.9% Poor.
- 246
- Public bridges
- 36.2%
- Good condition
- 6.9%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Jackson County pairs a higher-than-median Poor-condition share among rated counties in the state with a newer average build year than the state inventory.
- 73rd
- of 104 on Poor share
- 6.9%
- Poor-condition share
- 246
- public highway bridges
- 1982
- 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.
Jackson County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Jackson County ranks #73 of 104 Kansas counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6.9%). Jackson County, Kansas contains 246 public highway bridges. Roughly 36.2% are rated “Good,” 56.9% “Fair,” and 6.9% “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
36.2%
89 of 246 rated 7-9
Fair condition
56.9%
140 of 246 rated 5-6
Poor condition
6.9%
17 of 246 rated 4 or below
In-state Poor-share rank
#73 of 104
Among Kansas counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 246 NBI-tracked bridges by lowest applicable component rating.
Good 36.2% (89)
Fair 56.9% (140)
Poor 6.9% (17)
Jackson County's Poor-condition bridges carry 901 vehicle crossings a day
That is 1.3% of the county's reported daily bridge traffic on 6.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 53 crossings a day against 524 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 246 of 246 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
23.2% of Jackson County's bridges have passed the 50-year mark
57 of the 246 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 36.2% 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 25.2% of the county's Poor-condition bridge traffic
IRRA RS 719 K 228 over BANNER CREEK, built 1967, carries 227 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 17-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 901 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Jackson County's bridges were built
246 bridges with a recorded construction year, grouped by decade
- 1920s 5
1920–1929
5 bridges
- 1930s 11
1930–1939
11 bridges
- 1940s 7
1940–1949
7 bridges
- 1950s 10
1950–1959
10 bridges
- 1960s 11
1960–1969
11 bridges
- 1970s
1970–1979
51 bridges
- 1980s
1980–1989
66 bridges
- 1990s
1990–1999
36 bridges
- 2000s
2000–2009
29 bridges
- 2010s 15
2010–2019
15 bridges
- 2020s 5
2020–2029
5 bridges
What this shows Construction peaked in the 1980s, when 66 of the county's bridges still in the inventory were built, which is 26.8% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year is 1982, 10 years newer than the Kansas average of 1972.
How Jackson County compares with Kansas's closest counties by inventory size
The 5 Kansas counties nearest Jackson County in number of bridges, with their condition splits. Its 6.9% Poor share is the 3rd-lowest of these 6. Its average build year of 1982 against a peer-group mean of 1970 is 12 years newer.
Showing the 5 closest of 103 Kansas counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Phillips County | 249 | 34.5% | 50.2% | 15.3% | 1968 |
| Jackson County (this page) | 246 | 36.2% | 56.9% | 6.9% | 1982 |
| Norton County | 244 | 53.7% | 44.3% | 2% | 1980 |
| Osborne County | 244 | 52.5% | 40.2% | 7.4% | 1967 |
| Wabaunsee County | 242 | 36.8% | 52.9% | 10.3% | 1963 |
| Barber County | 241 | 44.8% | 53.9% | 1.2% | 1974 |
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 Jackson 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 Jackson County, both outside Kansas so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside KS (246 bridges here).
- Cullman County, AL · 246 bridges
- Piatt County, IL · 246 bridges
- Jackson County, IA · 246 bridges
- Buchanan County, MO · 246 bridges
Similar average build year
Nearest mean year-built outside KS (1982 here).
- Oklahoma County, OK · avg 1982 · 1,216 bridges
- Jackson County, MO · avg 1982 · 930 bridges
- Milwaukee County, WI · avg 1982 · 893 bridges
- Champaign County, IL · avg 1982 · 727 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Poor-condition bridges (17)
LOCAL 218 T7
PoorOver: TRIB. TO ELK CREEK
1.5S 4.4E OF HOLTON, Jackson, KS
Built 1975 Load: 6.2 t ADT: 15
IRRA LOCAL Q-113
PoorOver: SPRING CREEK
1.5W 0.4N OF HOYT, Jackson, KS
Built 1950 Load: 11.8 t ADT: 5
LOCAL I-260
PoorOver: TRIB. TO ELK CREEK
4.0E 1.2S OF SOLDIER, Jackson, KS
Built 1948 Load: 12.7 t ADT: 35
LOCAL 278 F7
PoorOver: TRIB. TO ELK CREEK
1.0N 1.9E OF SOLDIER, Jackson, KS
Built 1930 Load: 17.2 t ADT: 15
IRRA LOCAL R-324
PoorOver: MUD CREEK
1.7N 1.0E OF NETAWAKA, Jackson, KS
Built 1930 Load: 18.1 t ADT: 45
IRRA RS 719 K 228
PoorOver: BANNER CREEK
3.2S OF CIRCLEVILLE, Jackson, KS
Built 1967 Load: 19.1 t ADT: 227
MINOR 214 E2
PoorOver: TRIB. TO SOLDIER CREEK
7.0S OF SOLDIER, Jackson, KS
Built 1983 Load: 19.5 t ADT: 25
LOCAL B-121
PoorOver: CROSS CREEK
3.0W 1.9N OF DELIA, Jackson, KS
Built 1974 Load: 21.8 t ADT: 35
LOCAL 246 J4
PoorOver: TRIB. TO ELK CREEK
1.0S OF CIRCLEVILLE, Jackson, KS
Built 1950 Load: 21.8 t ADT: 35
LOCAL W4-223
PoorOver: TRIB. TO NEBO LAKE
2.5W 0.9S OF LARKINBURG, Jackson, KS
Built 1930 Load: 22.7 t ADT: 25
RS 1262 J4 256
PoorOver: TRIB. TO ELK CREEK
N. EDGE OF CIRCLEVILLE, Jackson, KS
Built 1930 Load: 23.6 t ADT: 112
RS 1265 W4 309
PoorOver: TRIB. TO DELAWARE RIVER
1.0N OF WHITING, Jackson, KS
Built 1940 Load: 23.6 t ADT: 137
MINOR 94 01
PoorOver: TRIB. LITTLE SOLDIER CK.
2.0S 3.8W OF HOYT, Jackson, KS
Built 1927 Load: 23.6 t ADT: 65
TTP RTE 0977
PoorOver: TRIB. TO SOLDIER CREEK
10.0 W 3.1 S OF HOLTON, Jackson, KS
Built 1935 Load: 25.7 t ADT: 35
LOCAL 222 D6
PoorOver: TRIB. TO SOLDIER CREEK
6.0S 0.2W OF SOLDIER, Jackson, KS
Built 1986 Load: 26.3 t ADT: 35
LOCAL 262 I6
PoorOver: ELK CREEK
0.7W 1.3N OF CIRCLEVILLE, Jackson, KS
Built 1983 Load: 26.3 t ADT: 25
LOCAL 142 Q7
PoorOver: LITTLE ELM CREEK
2.0S OF MAYETTA, Jackson, KS
Built 1970 Load: 41.0 t ADT: 30
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.