Total bridges
930
Public highway bridges in Jackson County
County profile · official public datasets
Jackson County, MO
930 public highway bridges tracked in the FHWA National Bridge Inventory: 42.2% rated Good, 52.5% Fair, 5.4% Poor.
- 930
- Public bridges
- 42.2%
- Good condition
- 5.4%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Jackson County posts a top-quartile lowest Poor-condition share among rated counties in the state across large county bridge inventory.
- Top 23%
- lowest Poor share in state
- 5.4%
- Poor-condition share
- 930
- 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 #27 of 115 Missouri counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 5.4%). Jackson County, Missouri contains 930 public highway bridges. Roughly 42.2% are rated “Good,” 52.5% “Fair,” and 5.4% “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
42.2%
392 of 930 rated 7-9
Fair condition
52.5%
488 of 930 rated 5-6
Poor condition
5.4%
50 of 930 rated 4 or below
In-state Poor-share rank
#27 of 115
Among Missouri counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 930 NBI-tracked bridges by lowest applicable component rating.
Good 42.2% (392)
Fair 52.5% (488)
Poor 5.4% (50)
Jackson County's Poor-condition bridges carry 521,373 vehicle crossings a day
That is 3.5% of the county's reported daily bridge traffic on 5.4% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 10,427 crossings a day against 12,739 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 929 of 930 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
40.3% of Jackson County's bridges have passed the 50-year mark
375 of the 930 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 42.2% 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 18.1% of the county's Poor-condition bridge traffic
IS 435 S over GRAVE CR, built 1964, carries 94,457 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 50-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 521,373 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
930 bridges with a recorded construction year, grouped by decade
- pre-1900 1
Built before 1900
1 bridges
- 1900s 10
1900–1909
10 bridges
- 1910s 10
1910–1919
10 bridges
- 1920s 14
1920–1929
14 bridges
- 1930s 23
1930–1939
23 bridges
- 1940s 21
1940–1949
21 bridges
- 1950s
1950–1959
75 bridges
- 1960s
1960–1969
163 bridges
- 1970s
1970–1979
101 bridges
- 1980s
1980–1989
102 bridges
- 1990s
1990–1999
129 bridges
- 2000s
2000–2009
156 bridges
- 2010s
2010–2019
84 bridges
- 2020s 41
2020–2029
41 bridges
What this shows Construction peaked in the 1960s, when 163 of the county's bridges still in the inventory were built, which is 17.5% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1982) matches the Missouri average (1979).
How Jackson County compares with Missouri's closest counties by inventory size
The 5 Missouri counties nearest Jackson County in number of bridges, with their condition splits. Its 5.4% Poor share is the 4th-lowest of these 6. Its average build year of 1982 against a peer-group mean of 1979 is in line with the group.
Showing the 5 closest of 114 Missouri counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Jackson County (this page) | 930 | 42.2% | 52.5% | 5.4% | 1982 |
| St. Louis County | 912 | 29.9% | 64.7% | 5.4% | 1987 |
| Greene County | 493 | 44.6% | 50.1% | 5.3% | 1978 |
| Johnson County | 476 | 39.3% | 56.3% | 4.4% | 1975 |
| Jasper County | 471 | 42% | 46.9% | 11% | 1978 |
| Clay County | 436 | 38.1% | 55% | 6.9% | 1979 |
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 Missouri so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside MO (930 bridges here).
- Hennepin County, MN · 936 bridges
- Franklin County, OH · 922 bridges
- Fresno County, CA · 916 bridges
- Erie County, NY · 906 bridges
Similar average build year
Nearest mean year-built outside MO (1982 here).
- Oklahoma County, OK · avg 1982 · 1,216 bridges
- Milwaukee County, WI · avg 1982 · 893 bridges
- Champaign County, IL · avg 1982 · 727 bridges
- Broward County, FL · avg 1982 · 686 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (488)
BLUE RIDGE BLVD S
FairOver: US 40
S 22 T 49 N R 32 W, Jackson, MO
Built 2002 Load: 57.6 t ADT: 14,018
RP IS49N TO IS435S
FairOver: RP RED BRIDGE RD TO IS49
S 2 T 47 N R 33 W, Jackson, MO
Built 2002 Load: 57.6 t ADT: 18,158
VERMONT ST
FairOver: ROCK CR
S 9 T 49 N R 32 W, Jackson, MO
Built 2006 Load: 57.6 t ADT: 600
US 40 E
FairOver: BLUE BR TRIB
S 33 T 49 N R 30 W, Jackson, MO
Built 1948 Load: 57.6 t ADT: 8,772
MO 78 E
FairOver: BR BLUE RVR
S 10 T 49 N R 32 W, Jackson, MO
Built 1967 Load: 60.3 t ADT: 25,726
HICKMAN MILLS DR S
FairOver: NAZARENE CR
S 35 T 48 N R 33 W, Jackson, MO
Built 1974 Load: 60.3 t ADT: 2,744
LIGGETT RD
FairOver: DAM SPLWY
S 11 T 48 N R 31 W, Jackson, MO
Built 2000 Load: 60.3 t ADT: 5,738
IS 70 E
FairOver: CST E 12TH ST
S 5 T 49 N R 33 W, Jackson, MO
Built 1958 Load: 61.2 t ADT: 55,722
MO 12 E
FairOver: ROCK CR
S 5 T 49 N R 32 W, Jackson, MO
Built 1996 Load: 61.2 t ADT: 9,811
E 10TH ST E
FairOver: IS 70 RP IS70E TO 11TH
S 5 T 49 N R 33 W, Jackson, MO
Built 1959 Load: 62.1 t ADT: 5,231
RP CHARLOTTE ST TO
FairOver: IS 670
S 5 T 49 N R 33 W, Jackson, MO
Built 1958 Load: 63.0 t ADT: 2,504
NB PASEO
FairOver: BRUSH CR
S 28 T 49 N R 33 W, Jackson, MO
Built 1996 Load: 63.0 t ADT: 5,866
SB PASEO
FairOver: BRUSH CR
S 28 T 49 N R 33 W, Jackson, MO
Built 1996 Load: 63.0 t ADT: 4,784
MO 7 S
FairOver: FIRE PRAIRIE CR
S 36 T 50 N R 31 W, Jackson, MO
Built 1941 Load: 63.9 t ADT: 6,022
MO 7 N
FairOver: FIRE PRAIRIE CR
S 36 T 50 N R 31 W, Jackson, MO
Built 1942 Load: 63.9 t ADT: 5,317
IS 435 S
FairOver: CST OLDHAM RD
S 13 T 48 N R 33 W, Jackson, MO
Built 1967 Load: 64.8 t ADT: 42,384
IS 435 N
FairOver: CST OLDHAM RD
S 13 T 48 N R 33 W, Jackson, MO
Built 1967 Load: 64.8 t ADT: 41,985
IS 35 N
FairOver: CST JARBOE ST
S 7 T 49 N R 33 W, Jackson, MO
Built 1967 Load: 64.8 t ADT: 43,721
MO 150 E
FairOver: S FK LIT BLUE RVR
S 36 T 47 N R 33 W, Jackson, MO
Built 1969 Load: 64.8 t ADT: 16,353
HICKMAN MILLS DR S
FairOver: UNKNOWN
S 35 T 48 N R 33 W, Jackson, MO
Built 2005 Load: 64.8 t ADT: 2,744
BROADWAY W PENWAY
FairOver: KCT RAILWAY
S 7 T 49 N R 33 W, Jackson, MO
Built 1989 Load: 66.6 t ADT: 25,436
MO 150 E
FairOver: US 50
S 19 T 47 N R 29 W, Jackson, MO
Built 2010 Load: 66.6 t ADT: 2,508
RP IS35N TO INDEPE
FairOver: IS 29
S 32 T 50 N R 33 W, Jackson, MO
Built 1958 Load: 66.6 t ADT: 5,657
US 24 E
FairOver: WAHOO BRANCH
S 24 T 50 N R 30 W, Jackson, MO
Built 2010 Load: 68.4 t ADT: 4,271
MO 150 E
FairOver: PRAIRIE CR
S 22 T 47 N R 30 W, Jackson, MO
Built 1900 Load: 69.3 t ADT: 1,751
US 40 W
FairOver: E FK LIT BLUE RVR
S 28 T 49 N R 31 W, Jackson, MO
Built 1998 Load: 71.1 t ADT: 9,461
RT AA W
FairOver: DRAIN DTCH
S 35 T 49 N R 30 W, Jackson, MO
Built 2012 Load: 74.7 t ADT: 14,404
IS 470 E
FairOver: BR RUSSEL CR
S 29 T 49 N R 31 W, Jackson, MO
Built 1964 Load: 99.9 t ADT: 90,066
MO 150 E
FairOver: BLUE RVR TRIB
S 19 T 47 N R 33 W, Jackson, MO
Built 1998 Load: 99.9 t ADT: 23,624
RP IS49N TO IS470E
FairOver: HICKMAN MILLS CR (
S 35 T 48 N R 33 W, Jackson, MO
Built 2002 Load: 99.9 t ADT: 11,601
LANGSFORD RD
FairOver: DRAINAGE DTCH
S 5 T 47 N R 31 W, Jackson, MO
Built 2003 Load: 99.9 t ADT: 32,500
3RD ST
FairOver: DRAIN DTCH
S 3 T 47 N R 31 W, Jackson, MO
Built 1980 Load: 99.9 t ADT: 2,000
WINSBORO ST
FairOver: DRAIN DTCH
S 3 T 47 N R 31 W, Jackson, MO
Built 1990 Load: 99.9 t ADT: 1,000
SW WHISTLE DR
FairOver: TRIB OF RAINTREE L
S 25 T 47 N R 32 W, Jackson, MO
Built 2006 Load: 99.9 t ADT: 30
IS 70 E
FairOver: E FK LIT BLUE RVR
S 27 T 49 N R 31 W, Jackson, MO
Built 1988 Load: 99.9 t ADT: 104,248
MO 291 S
FairOver: SPRING BR
S 6 T 49 N R 31 W, Jackson, MO
Built 1990 Load: 99.9 t ADT: 43,455
US 71 S
FairOver: BR OF HEART GROVE
S 22 T 48 N R 33 W, Jackson, MO
Built 1988 Load: 99.9 t ADT: 75,635
IS 70 E
FairOver: SNI CR
S 28 T 49 N R 30 W, Jackson, MO
Built 1963 Load: 99.9 t ADT: 70,408
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.