County profile · official public datasets

Atchison County, MO

191 public highway bridges tracked in the FHWA National Bridge Inventory: 58.1% rated Good, 32.5% Fair, 9.4% Poor.

191
Public bridges
58.1%
Good condition
9.4%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Atchison 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.

63rd
of 115 on Poor share
9.4%
Poor-condition share
191
public highway bridges
1985
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.

Atchison County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Atchison County ranks #63 of 115 Missouri counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 9.4%). Atchison County, Missouri contains 191 public highway bridges. Roughly 58.1% are rated “Good,” 32.5% “Fair,” and 9.4% “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

191

Public highway bridges in Atchison County

Good condition

58.1%

111 of 191 rated 7-9

Fair condition

32.5%

62 of 191 rated 5-6

Poor condition

9.4%

18 of 191 rated 4 or below

In-state Poor-share rank

#63 of 115

Among Missouri counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 191 NBI-tracked bridges by lowest applicable component rating.

Good
58.1% (111)
Fair
32.5% (62)
Poor
9.4% (18)

Atchison County's Poor-condition bridges carry 10,512 vehicle crossings a day

That is 4.9% of the county's reported daily bridge traffic on 9.4% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 584 crossings a day against 367 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 191 of 191 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

35.1% of Atchison County's bridges have passed the 50-year mark

67 of the 191 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 58.1% 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 27.5% of the county's Poor-condition bridge traffic

US 136 E over ROCK CR, built 1970, carries 2,887 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 18-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 10,512 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Atchison County's bridges were built

191 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 2000s, when 45 of the county's bridges still in the inventory were built, which is 23.6% of those with a recorded year. That cohort is now 15 to 24 years old in the 2024 inventory. Its average build year is 1985, 6 years newer than the Missouri average of 1979.

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

How Atchison County compares with Missouri's closest counties by inventory size

The 5 Missouri counties nearest Atchison County in number of bridges, with their condition splits. Its 9.4% Poor share is the 5th-lowest of these 6. Its average build year of 1985 against a peer-group mean of 1982 is in line with the group.

Showing the 5 closest of 114 Missouri counties eligible for comparison.

Bridge inventory size and condition shares for Atchison County and the 5 Missouri counties closest to it in inventory size
County Bridges Poor
Cooper County 193 4.1%
Atchison County (this page) 191 9.4%
Howell County 189 2.1%
Lincoln County 189 3.7%
Webster County 189 8.5%
Grundy County 187 11.2%

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 Atchison 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 Atchison County, both outside Missouri so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside MO (191 bridges here).

Similar average build year

Nearest mean year-built outside MO (1985 here).

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

All 191 Good 111 Fair 62 Poor 18

Good-condition bridges (111)

MO 111 S

Good

Over: IS 29

S 9 T 64 N R 41 W, Atchison, MO

Built 2021 Load: 26.1 t ADT: 637

OUTER RD I29

Good

Over: ANGEL HOLLOW

S 18 T 63 N R 40 W, Atchison, MO

Built 2000 Load: 26.1 t ADT: 20

OUTER RD I29

Good

Over: MILL CR

S 2 T 63 N R 41 W, Atchison, MO

Built 2010 Load: 26.1 t ADT: 35

Q AVE

Good

Over: BR OF TARKIO RVR

S 23 T 65 N R 40 W, Atchison, MO

Built 2006 Load: 27.0 t ADT: 45

COUNTY RD 56

Good

Over: ROSE BR

S 17 T 65 N R 41 W, Atchison, MO

Built 2009 Load: 27.9 t ADT: 10

140 ST

Good

Over: HIGH CR

S 13 T 66 N R 41 W, Atchison, MO

Built 2004 Load: 28.8 t ADT: 10

110 ST

Good

Over: MCELROY CR

S 33 T 67 N R 41 W, Atchison, MO

Built 1997 Load: 29.7 t ADT: 20

300 ST

Good

Over: BR E FK LIT TARKIO

S 3 T 64 N R 39 W, Atchison, MO

Built 1990 Load: 29.7 t ADT: 5

RT M S

Good

Over: LONG BR

S 30 T 66 N R 38 W, Atchison, MO

Built 1961 Load: 29.7 t ADT: 68

IS 29 S

Good

Over: NISHNABOTNA RVR LEVEE M

S 3 T 66 N R 42 W, Atchison, MO

Built 1971 Load: 30.6 t ADT: 8,146

IS 29 N

Good

Over: LEVEE MAINT. RD NISHN

S 3 T 66 N R 42 W, Atchison, MO

Built 1971 Load: 30.6 t ADT: 7,569

270TH ST

Good

Over: BR ROCK CR

S 19 T 64 N R 41 W, Atchison, MO

Built 2013 Load: 30.6 t ADT: 15

Q AVE

Good

Over: TARKIO RVR

S 23 T 65 N R 40 W, Atchison, MO

Built 1995 Load: 32.4 t ADT: 25

110 ST

Good

Over: MID TARKIO CR

S 34 T 67 N R 39 W, Atchison, MO

Built 2000 Load: 32.4 t ADT: 50

110 ST

Good

Over: TARKIO RVR

S 31 T 67 N R 38 W, Atchison, MO

Built 1992 Load: 32.4 t ADT: 10

150 ST

Good

Over: TARKIO RVR

S 24 T 66 N R 39 W, Atchison, MO

Built 1990 Load: 32.4 t ADT: 10

T AVE

Good

Over: WOLF CR

S 28 T 64 N R 39 W, Atchison, MO

Built 2010 Load: 32.4 t ADT: 15

120 ST

Good

Over: W TARKIO CR

S 1 T 66 N R 40 W, Atchison, MO

Built 2000 Load: 33.3 t ADT: 50

S AVE

Good

Over: LONG BR

S 6 T 64 N R 39 W, Atchison, MO

Built 2005 Load: 33.3 t ADT: 5

RT C E

Good

Over: MID TARKIO CR

S 10 T 66 N R 39 W, Atchison, MO

Built 2011 Load: 33.3 t ADT: 328

MO 46 E

Good

Over: HICKORY CR

S 19 T 64 N R 38 W, Atchison, MO

Built 2012 Load: 33.3 t ADT: 513

RT J S

Good

Over: TARKIO RVR

S 22 T 64 N R 40 W, Atchison, MO

Built 2019 Load: 33.3 t ADT: 376

160 ST

Good

Over: MID TARKIO CR

S 29 T 66 N R 39 W, Atchison, MO

Built 1992 Load: 34.2 t ADT: 25

270 ST

Good

Over: ROCK CR DRAIN DTCH

S 19 T 64 N R 41 W, Atchison, MO

Built 2001 Load: 34.2 t ADT: 15

RT V E

Good

Over: MAIN DRAIN DTCH #6

S 33 T 67 N R 42 W, Atchison, MO

Built 2010 Load: 34.2 t ADT: 126

MO 111 S

Good

Over: DRAIN DTCH

S 10 T 63 N R 41 W, Atchison, MO

Built 2011 Load: 34.2 t ADT: 120

H AVE

Good

Over: ROCK CR DRAIN DTCH

S 21 T 64 N R 41 W, Atchison, MO

Built 1999 Load: 35.1 t ADT: 50

C AVE

Good

Over: HIGH CR

S 23 T 66 N R 42 W, Atchison, MO

Built 1995 Load: 36.0 t ADT: 50

100 ST

Good

Over: W HIGH CR

S 31 T 67 N R 40 W, Atchison, MO

Built 2001 Load: 36.0 t ADT: 50

120 ST

Good

Over: ROCK CR

S 4 T 66 N R 40 W, Atchison, MO

Built 1991 Load: 36.0 t ADT: 35

Z AVE

Good

Over: HICKORY BR

S 20 T 64 N R 38 W, Atchison, MO

Built 1990 Load: 36.0 t ADT: 15

250 ST

Good

Over: LONG BR

S 7 T 64 N R 39 W, Atchison, MO

Built 1999 Load: 36.0 t ADT: 50

IS 29 N

Good

Over: ROCK CR

S 16 T 64 N R 41 W, Atchison, MO

Built 1973 Load: 36.0 t ADT: 9,366

ATCHISON HOLT RD

Good

Over: MINNESOTA VALLEY C

S 18 T 63 N R 38 W, Atchison, MO

Built 2003 Load: 36.0 t ADT: 15

170 ST

Good

Over: ROCK CR

S 31 T 66 N R 40 W, Atchison, MO

Built 2001 Load: 36.9 t ADT: 15

U AVE

Good

Over: E FK LIT TARKIO CR

S 9 T 63 N R 39 W, Atchison, MO

Built 2002 Load: 36.9 t ADT: 15

210 ST

Good

Over: BR LIT TARKIO CR

S 26 T 65 N R 39 W, Atchison, MO

Built 2003 Load: 37.8 t ADT: 15

US 136 E

Good

Over: LIT TARKIO CR

S 13 T 65 N R 39 W, Atchison, MO

Built 2012 Load: 37.8 t ADT: 696

US 136 E

Good

Over: TARKIO RVR OVRFL

S 13 T 65 N R 40 W, Atchison, MO

Built 1997 Load: 37.8 t ADT: 1,400

N AVE

Good

Over: COW BR

S 32 T 65 N R 40 W, Atchison, MO

Built 1995 Load: 38.7 t ADT: 15

280 ST

Good

Over: E FK LIT TARKIO CR

S 35 T 64 N R 39 W, Atchison, MO

Built 1998 Load: 38.7 t ADT: 40

MO 111 N

Good

Over: TURKEY CR

S 15 T 64 N R 41 W, Atchison, MO

Built 2011 Load: 38.7 t ADT: 226

RT T S

Good

Over: W FK HIGH CR

S 10 T 66 N R 41 W, Atchison, MO

Built 1987 Load: 38.7 t ADT: 84

140 ST

Good

Over: W TARKIO CR

S 13 T 66 N R 40 W, Atchison, MO

Built 1999 Load: 39.6 t ADT: 50

300 ST

Good

Over: TRIB E FK LIT TARK

S 1 T 63 N R 39 W, Atchison, MO

Built 1996 Load: 39.6 t ADT: 35

CASS ST

Good

Over: ROCK CR

S 27 T 65 N R 41 W, Atchison, MO

Built 2008 Load: 40.5 t ADT: 250

US 136 E

Good

Over: COW CR

S 20 T 65 N R 40 W, Atchison, MO

Built 2011 Load: 40.5 t ADT: 2,118

MO 46 E

Good

Over: LIT TARKIO CR

S 19 T 64 N R 39 W, Atchison, MO

Built 2023 Load: 40.5 t ADT: 561

MO 111 S

Good

Over: PIKE CR DRAIN DTCH

S 33 T 64 N R 41 W, Atchison, MO

Built 2023 Load: 40.5 t ADT: 226

RT N S

Good

Over: E FK LIT TARKO CR

S 10 T 63 N R 39 W, Atchison, MO

Built 2015 Load: 41.4 t ADT: 206

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.