County profile · official public datasets

Callaway County, MO

303 public highway bridges tracked in the FHWA National Bridge Inventory: 39.3% rated Good, 54.5% Fair, 6.3% Poor.

303
Public bridges
39.3%
Good condition
6.3%
Poor condition

The verdict

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

Callaway County posts a better-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.

Top 30%
lowest Poor share in state
6.3%
Poor-condition share
303
public highway bridges
1978
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.

Callaway County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Callaway County ranks #34 of 115 Missouri counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6.3%). Callaway County, Missouri contains 303 public highway bridges. Roughly 39.3% are rated “Good,” 54.5% “Fair,” and 6.3% “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

303

Public highway bridges in Callaway County

Good condition

39.3%

119 of 303 rated 7-9

Fair condition

54.5%

165 of 303 rated 5-6

Poor condition

6.3%

19 of 303 rated 4 or below

In-state Poor-share rank

#34 of 115

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

Condition distribution

Share of 303 NBI-tracked bridges by lowest applicable component rating.

Good
39.3% (119)
Fair
54.5% (165)
Poor
6.3% (19)

Callaway County's Poor-condition bridges carry 18,389 vehicle crossings a day

That is 2.2% of the county's reported daily bridge traffic on 6.3% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 968 crossings a day against 1,712 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 303 of 303 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

36.3% of Callaway County's bridges have passed the 50-year mark

110 of the 303 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 39.3% 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 68.4% of the county's Poor-condition bridge traffic

US 63 S over KATY TRAIL, built 1924, carries 12,571 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 19-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 18,389 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Callaway County's bridges were built

303 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1990s, when 65 of the county's bridges still in the inventory were built, which is 21.5% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year (1978) matches the Missouri average (1979).

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

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

The 5 Missouri counties nearest Callaway County in number of bridges, with their condition splits. Its 6.3% Poor share is the 2nd-lowest of these 6. Its average build year of 1978 against a peer-group mean of 1985 is 7 years older.

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

Bridge inventory size and condition shares for Callaway County and the 5 Missouri counties closest to it in inventory size
County Bridges Poor
Audrain County 314 4.8%
Linn County 313 17.6%
Callaway County (this page) 303 6.3%
Adair County 301 6.6%
Newton County 300 6.7%
Macon County 291 7.6%

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

Similar inventory size

Nearest county inventories outside MO (303 bridges here).

Similar average build year

Nearest mean year-built outside MO (1978 here).

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

All 303 Good 119 Fair 165 Poor 19

Good-condition bridges (119)

RT F E

Good

Over: MILLERS CR

S 6 T 47 N R 10 W, Callaway, MO

Built 2007 Load: 36.0 t ADT: 3,278

BURNETT SCHOOL RD

Good

Over: CEDAR CR

S 29 T 46 N R 11 W, Callaway, MO

Built 2020 Load: 36.0 t ADT: 50

COUNTY RD 276

Good

Over: MANACLE CR

S 2 T 48 N R 11 W, Callaway, MO

Built 1997 Load: 36.9 t ADT: 100

US 63 S

Good

Over: TURKEY CR

S 9 T 44 N R 11 W, Callaway, MO

Built 1975 Load: 36.9 t ADT: 12,571

US 63 N

Good

Over: TURKEY CR

S 9 T 44 N R 11 W, Callaway, MO

Built 1975 Load: 36.9 t ADT: 12,608

COUNTY RD 298

Good

Over: CEDAR CR

S 10 T 49 N R 11 W, Callaway, MO

Built 2004 Load: 36.9 t ADT: 100

COUNTY RD 217

Good

Over: STINSON CR

S 35 T 48 N R 10 W, Callaway, MO

Built 2004 Load: 36.9 t ADT: 30

COUNTY RD 263

Good

Over: FOUR MILE BR

S 21 T 49 N R 10 W, Callaway, MO

Built 1999 Load: 37.8 t ADT: 25

COUNTY RD 328

Good

Over: HILLERS CR

S 8 T 46 N R 10 W, Callaway, MO

Built 1992 Load: 37.8 t ADT: 40

COUNTY RD 1068

Good

Over: JESSE CR

S 2 T 49 N R 9 W, Callaway, MO

Built 1999 Load: 37.8 t ADT: 50

US 63 S

Good

Over: CST OILWELL RD KATY T

S 9 T 44 N R 11 W, Callaway, MO

Built 1975 Load: 37.8 t ADT: 11,496

COUNTY RD 371

Good

Over: BR OF CLIFTON CR

S 1 T 45 N R 11 W, Callaway, MO

Built 2004 Load: 37.8 t ADT: 50

OLD 54 S

Good

Over: SMITH BR

S 2 T 49 N R 9 W, Callaway, MO

Built 2010 Load: 37.8 t ADT: 158

RT PP E

Good

Over: MIDDLE RVR

S 22 T 45 N R 9 W, Callaway, MO

Built 2012 Load: 38.7 t ADT: 267

US 54 W

Good

Over: STINSON CR

S 7 T 47 N R 9 W, Callaway, MO

Built 1992 Load: 38.7 t ADT: 8,478

COUNTY RD 263

Good

Over: AUXVASSE CREEK

S 28 T 49 N R 10 W, Callaway, MO

Built 1999 Load: 39.6 t ADT: 20

COUNTY RD 452

Good

Over: HILLERS CR

S 15 T 45 N R 10 W, Callaway, MO

Built 1995 Load: 39.6 t ADT: 20

COUNTY RD 1040

Good

Over: BR OF LOUTRE RVR

S 12 T 49 N R 7 W, Callaway, MO

Built 2001 Load: 39.6 t ADT: 30

COUNTY RD 1048

Good

Over: JESSE CR

S 11 T 49 N R 9 W, Callaway, MO

Built 2007 Load: 39.6 t ADT: 40

OR 70 E

Good

Over: MADDOX CR

S 11 T 48 N R 9 W, Callaway, MO

Built 2010 Load: 39.6 t ADT: 510

MO 94 E

Good

Over: EAGLE CR

S 33 T 46 N R 7 W, Callaway, MO

Built 2012 Load: 39.6 t ADT: 554

US 54 E

Good

Over: AUXVASSE CR

S 2 T 48 N R 9 W, Callaway, MO

Built 1990 Load: 39.6 t ADT: 5,850

COUNTY RD 215

Good

Over: BR OF RICHLAND CR

S 13 T 48 N R 10 W, Callaway, MO

Built 1997 Load: 40.5 t ADT: 50

COUNTY RD 280

Good

Over: BYNUM CR

S 8 T 49 N R 9 W, Callaway, MO

Built 2000 Load: 40.5 t ADT: 40

MO 94 E

Good

Over: BIG TAVERN CR

S 27 T 46 N R 7 W, Callaway, MO

Built 2004 Load: 40.5 t ADT: 641

MO 94 E

Good

Over: OILWELL RD KATY TRAIL

S 9 T 44 N R 11 W, Callaway, MO

Built 1975 Load: 41.4 t ADT: 2,385

COUNTY RD 474

Good

Over: BR OF GALLONS

S 16 T 45 N R 9 W, Callaway, MO

Built 2012 Load: 41.4 t ADT: 20

W 7TH ST

Good

Over: STINSON CR

S 17 T 47 N R 9 W, Callaway, MO

Built 2014 Load: 42.3 t ADT: 2,550

COUNTY RD 428

Good

Over: AUXVASSE CR

S 17 T 46 N R 8 W, Callaway, MO

Built 2003 Load: 43.2 t ADT: 30

COUNTY RD 220

Good

Over: RICHLAND CR

S 14 T 48 N R 10 W, Callaway, MO

Built 2004 Load: 43.2 t ADT: 30

MO 94 E

Good

Over: E WING CR

S 18 T 45 N R 8 W, Callaway, MO

Built 2012 Load: 43.2 t ADT: 1,465

COUNTY RD 435

Good

Over: MIDDLE RVR

S 5 T 45 N R 9 W, Callaway, MO

Built 2013 Load: 43.2 t ADT: 50

COUNTY RD 346

Good

Over: BR OF MILLERS CR

S 11 T 47 N R 11 W, Callaway, MO

Built 1990 Load: 44.1 t ADT: 20

US 54 E

Good

Over: MIDDLE RVR

S 2 T 46 N R 10 W, Callaway, MO

Built 1992 Load: 44.1 t ADT: 7,523

COUNTY RD 215

Good

Over: RICHLAND CR

S 24 T 48 N R 10 W, Callaway, MO

Built 1997 Load: 45.0 t ADT: 25

COUNTY RD 395

Good

Over: BR OF CEDAR CR

S 29 T 45 N R 11 W, Callaway, MO

Built 1990 Load: 45.0 t ADT: 50

MO 94 E

Good

Over: MAINT. RD KATY TRAIL

S 31 T 46 N R 7 W, Callaway, MO

Built 2004 Load: 45.9 t ADT: 554

US 54 E

Good

Over: RT J

S 32 T 36 N R 10 W, Callaway, MO

Built 1992 Load: 46.8 t ADT: 9,646

US 54 W

Good

Over: RT J

S 32 T 46 N R 10 W, Callaway, MO

Built 1992 Load: 46.8 t ADT: 7,448

COUNTY RD 328

Good

Over: FITZHUGH BR

S 9 T 46 N R 10 W, Callaway, MO

Built 1912 Load: 47.7 t ADT: 60

COUNTY RD 328

Good

Over: BR OF HILLERS CR

S 9 T 46 N R 10 W, Callaway, MO

Built 1912 Load: 47.7 t ADT: 75

COUNTY RD 1051

Good

Over: BR OF LOUTRE RVR

S 22 T 49 N R 7 W, Callaway, MO

Built 2007 Load: 48.6 t ADT: 40

COUNTY RD 4004

Good

Over: ROCKY BR

S 36 T 45 N R 10 W, Callaway, MO

Built 2005 Load: 49.5 t ADT: 40

COUNTY RD 1054

Good

Over: BRUSHY BR

S 11 T 49 N R 7 W, Callaway, MO

Built 1990 Load: 50.4 t ADT: 25

COUNTY RD 121

Good

Over: HOUFS CR

S 22 T 48 N R 9 W, Callaway, MO

Built 2000 Load: 52.2 t ADT: 50

MO 94 E

Good

Over: WAINSCOT CR

S 7 T 44 N R 9 W, Callaway, MO

Built 2001 Load: 52.2 t ADT: 2,027

COUNTY RD 436

Good

Over: HILLERS CR

S 34 T 46 N R 10 W, Callaway, MO

Built 2011 Load: 52.2 t ADT: 200

COUNTY RD 2002

Good

Over: SMITH BR

S 3 T 49 N R 9 W, Callaway, MO

Built 1995 Load: 53.1 t ADT: 50

COUNTY RD 447

Good

Over: AUXVASSE CR

S 32 T 46 N R 8 W, Callaway, MO

Built 2001 Load: 53.1 t ADT: 50

COUNTY RD 154

Good

Over: TRIB OF WHETSTONE

S 2 T 48 N R 8 W, Callaway, MO

Built 2000 Load: 53.1 t ADT: 50

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.