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.

Total bridges

930

Public highway bridges in Jackson County

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

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).

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

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.

Bridge inventory size and condition shares for Jackson County and the 5 Missouri counties closest to it in inventory size
County Bridges Poor
Jackson County (this page) 930 5.4%
St. Louis County 912 5.4%
Greene County 493 5.3%
Johnson County 476 4.4%
Jasper County 471 11%
Clay County 436 6.9%

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).

Similar average build year

Nearest mean year-built outside MO (1982 here).

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 930 Good 392 Fair 488 Poor 50

All bridges (930)

SANTA FE ST

Poor

Over: BNSF RR

S 34 T 51 N R 30 W, Jackson, MO

Built 1912 Load: 19.8 t ADT: 417

HILLCREST RD

Poor

Over: CREEK

S 13 T 48 N R 33 W, Jackson, MO

Built 1906 Load: 19.8 t ADT: 504

GREGORY BLVD

Poor

Over: UP RR BIG BLUE RVR

S 11 T 48 N R 33 W, Jackson, MO

Built 1917 Load: 21.6 t ADT: 8,358

17TH ST

Poor

Over: BLUE RVR

S 6 T 49 N R 32 W, Jackson, MO

Built 1998 Load: 21.6 t ADT: 2,208

HAMMOND

Poor

Over: BR OF SNI-A-BAR CR

S 2 T 47 N R 30 W, Jackson, MO

Built 1955 Load: 22.5 t ADT: 249

12TH ST

Poor

Over: BIG BLUE RVR

S 6 T 49 N R 32 W, Jackson, MO

Built 1960 Load: 22.5 t ADT: 1,192

23RD ST

Poor

Over: KCT RR

S 7 T 49 N R 33 W, Jackson, MO

Built 1920 Load: 22.5 t ADT: 3,303

WOODSWETHER RD

Poor

Over: BNSF RR

S 31 T 50 N R 33 W, Jackson, MO

Built 1951 Load: 24.3 t ADT: 1,757

MO 291 N

Poor

Over: MISSOURI RVR

S 12 T 50 N R 32 W, Jackson, MO

Built 1949 Load: 24.3 t ADT: 15,999

IS 70 W

Poor

Over: KCT RR

S 3 T 49 N R 33 W, Jackson, MO

Built 1959 Load: 25.2 t ADT: 57,043

WINNER RD

Poor

Over: KCS RR

S 9 T 49 N R 32 W, Jackson, MO

Built 1975 Load: 26.1 t ADT: 3,500

BLUE RIDGE BLVD S

Poor

Over: IS 70 RP US40E TO IS70E

S 21 T 49 N R 32 W, Jackson, MO

Built 1962 Load: 26.1 t ADT: 14,018

CRYSLER AVE

Poor

Over: BNSF RR

S 3 T 49 N R 32 W, Jackson, MO

Built 1980 Load: 27.0 t ADT: 1,390

ARLINGTON ST

Poor

Over: ROCK CR

S 8 T 49 N R 32 W, Jackson, MO

Built 1979 Load: 31.5 t ADT: 30,000

HARRY TRUMAN DR

Poor

Over: WEST FIRE PRAIRIE CREEK

N OF EXPLOSIVE AREA 19, Jackson, MO

Built 1954 Load: 32.2 t ADT: 1,000

BELLEVIEW AVE

Poor

Over: BRUSH CR

S 30 T 49 N R 33 W, Jackson, MO

Built 1955 Load: 32.4 t ADT: 9,432

51ST ST

Poor

Over: UP RR

S 35 T 49 N R 32 W, Jackson, MO

Built 1946 Load: 33.3 t ADT: 3,000

US 24 E

Poor

Over: FIRE PRAIRIE CR

S 21 T 50 N R 29 W, Jackson, MO

Built 1984 Load: 34.2 t ADT: 3,584

RP IS35N TO IS70W

Poor

Over: IS 35 BLUFF ST CST E

S 31 T 49 N R 34 W, Jackson, MO

Built 1967 Load: 34.2 t ADT: 3,529

SOUTHSIDE BLVD

Poor

Over: BNSF RR

S 11 T 49 N R 32 W, Jackson, MO

Built 1910 Load: 36.0 t ADT: 1,000

RT W E

Poor

Over: BR BLUE RVR

S 26 T 48 N R 33 W, Jackson, MO

Built 1969 Load: 38.7 t ADT: 87,807

E 27TH ST E

Poor

Over: IS 70

S 15 T 49 N R 33 W, Jackson, MO

Built 1960 Load: 38.7 t ADT: 5,117

COLBERN RD

Poor

Over: UP RR DRAINAGE WATERWAY

S 25 T 48 N R 32 W, Jackson, MO

Built 1980 Load: 39.6 t ADT: 9,498

HOLMES ST N

Poor

Over: RP IS670E TO IS70W RP I

S 5 T 49 N R 33 W, Jackson, MO

Built 1961 Load: 40.5 t ADT: 2,737

IS 70 W

Poor

Over: CST VAN BRUNT BLVD

S 13 T 49 N R 33 W, Jackson, MO

Built 1960 Load: 43.2 t ADT: 52,204

IS 435 S

Poor

Over: GRAVE CR

S 24 T 49 N R 33 W, Jackson, MO

Built 1964 Load: 43.2 t ADT: 94,457

CLEVELAND AVE S

Poor

Over: IS 70

S 10 T 49 N R 33 W, Jackson, MO

Built 1960 Load: 48.6 t ADT: 2,179

RP IS70E TO IS35S

Poor

Over: CST EIGHTH ST UP & KCT

S 31 T 49 N R 34 W, Jackson, MO

Built 1967 Load: 56.7 t ADT: 4,971

RT W E

Poor

Over: DYKES BR

S 29 T 48 N R 33 W, Jackson, MO

Built 1983 Load: 57.6 t ADT: 9,752

RT V S

Poor

Over: BR LIT BLUE RVR

S 11 T 48 N R 32 W, Jackson, MO

Built 1931 Load: 59.4 t ADT: 9,912

Read our methodology - how this data is sourced, computed, and verified.

Related

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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.