County profile · official public datasets

Carroll County, MO

371 public highway bridges tracked in the FHWA National Bridge Inventory: 25.9% rated Good, 56.1% Fair, 18.1% Poor.

371
Public bridges
25.9%
Good condition
18.1%
Poor condition

The verdict

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

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

106th
of 115 on Poor share
18.1%
Poor-condition share
371
public highway bridges
1975
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.

Carroll County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Carroll County ranks #106 of 115 Missouri counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 18.1%). Carroll County, Missouri contains 371 public highway bridges. Roughly 25.9% are rated “Good,” 56.1% “Fair,” and 18.1% “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

371

Public highway bridges in Carroll County

Good condition

25.9%

96 of 371 rated 7-9

Fair condition

56.1%

208 of 371 rated 5-6

Poor condition

18.1%

67 of 371 rated 4 or below

In-state Poor-share rank

#106 of 115

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

Condition distribution

Share of 371 NBI-tracked bridges by lowest applicable component rating.

Good
25.9% (96)
Fair
56.1% (208)
Poor
18.1% (67)

Carroll County's Poor-condition bridges carry 4,508 vehicle crossings a day

That is 4.2% of the county's reported daily bridge traffic on 18.1% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 67 crossings a day against 320 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 371 of 371 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

43.9% of Carroll County's bridges have passed the 50-year mark

163 of the 371 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 25.9% 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 22.2% of the county's Poor-condition bridge traffic

N MASON ST over BNSF RR, built 1935, carries 1,000 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 67-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 4,508 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Carroll County's bridges were built

371 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1990s, when 68 of the county's bridges still in the inventory were built, which is 18.3% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year (1975) matches the Missouri average (1979).

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

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

The 5 Missouri counties nearest Carroll County in number of bridges, with their condition splits. Its 18.1% Poor share is the 6th-lowest of these 6. Its average build year of 1975 against a peer-group mean of 1985 is 10 years older.

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

Bridge inventory size and condition shares for Carroll County and the 5 Missouri counties closest to it in inventory size
County Bridges Poor
Vernon County 401 4.2%
Nodaway County 396 14.4%
Cass County 377 8.8%
Cape Girardeau County 374 5.1%
Carroll County (this page) 371 18.1%
Boone County 334 3.9%

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

Similar inventory size

Nearest county inventories outside MO (371 bridges here).

Similar average build year

Nearest mean year-built outside MO (1975 here).

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

All 371 Good 96 Fair 208 Poor 67

Poor-condition bridges (67)

COUNTY ROAD 110

Poor

Over: COTTONWOOD CR

S 11 T 55 N R 25 W, Carroll, MO

Built 1930 Load: 0.0 t ADT: 25

COUNTY ROAD 261

Poor

Over: ROCK BR

S 27 T 55 N R 23 W, Carroll, MO

Built 1940 Load: 0.0 t ADT: 5

COUNTY ROAD 120

Poor

Over: HURRICANE CR

S 14 T 55 N R 22 W, Carroll, MO

Built 1950 Load: 0.0 t ADT: 35

COUNTY ROAD 121

Poor

Over: HICKORY BR

S 29 T 54 N R 25 W, Carroll, MO

Built 1940 Load: 2.7 t ADT: 5

COUNTY ROAD 271

Poor

Over: TATER HILL CR

S 11 T 54 N R 23 W, Carroll, MO

Built 1930 Load: 2.7 t ADT: 5

COUNTY ROAD 231

Poor

Over: BR TATER HILL CR

S 18 T 54 N R 23 W, Carroll, MO

Built 1940 Load: 2.7 t ADT: 15

LIBERTY ST

Poor

Over: BR OF MOSS CR

S 23 T 52 N R 25 W, Carroll, MO

Built 1950 Load: 2.7 t ADT: 50

COUNTY ROAD 103

Poor

Over: MOSS CR DTCH

S 19 T 52 N R 25 W, Carroll, MO

Built 1930 Load: 2.7 t ADT: 5

COUNTY ROAD 111

Poor

Over: MOSS CR DTCH

S 31 T 52 N R 25 W, Carroll, MO

Built 1940 Load: 2.7 t ADT: 5

COUNTY ROAD 130

Poor

Over: BR COTTONWOOD CR

S 22 T 55 N R 25 W, Carroll, MO

Built 1940 Load: 3.6 t ADT: 15

E WASHINGTON AVE

Poor

Over: STANDLEY BR

S 33 T 53 N R 23 W, Carroll, MO

Built 1940 Load: 3.6 t ADT: 500

COUNTY ROAD 225

Poor

Over: BR TATER HILL CR

S 6 T 54 N R 23 W, Carroll, MO

Built 1940 Load: 3.6 t ADT: 25

COUNTY ROAD 160

Poor

Over: BR OF TURKEY CR

S 4 T 54 N R 25 W, Carroll, MO

Built 1940 Load: 4.5 t ADT: 35

COUNTY ROAD 351

Poor

Over: SAND BR

S 31 T 54 N R 21 W, Carroll, MO

Built 1940 Load: 4.5 t ADT: 10

COUNTY ROAD 244

Poor

Over: MCCROSKIE CR

S 16 T 53 N R 24 W, Carroll, MO

Built 1940 Load: 4.5 t ADT: 5

COUNTY ROAD 290

Poor

Over: CAMP CR

S 9 T 52 N R 22 W, Carroll, MO

Built 1950 Load: 4.5 t ADT: 15

COUNTY ROAD 254

Poor

Over: TRIB OF BIG CR

S 19 T 53 N R 21 W, Carroll, MO

Built 1935 Load: 4.5 t ADT: 5

COUNTY ROAD 141

Poor

Over: BR OF TURKEY CR

S 34 T 55 N R 25 W, Carroll, MO

Built 1940 Load: 5.4 t ADT: 5

COUNTY ROAD 236

Poor

Over: SNOW BR

S 11 T 53 N R 22 W, Carroll, MO

Built 1940 Load: 5.4 t ADT: 10

COUNTY ROAD 311

Poor

Over: BR OF CAMP CR

S 3 T 52 N R 22 W, Carroll, MO

Built 1940 Load: 5.4 t ADT: 20

COUNTY ROAD 254

Poor

Over: BR LIT WAKENDA CR

S 23 T 53 N R 23 W, Carroll, MO

Built 1940 Load: 6.3 t ADT: 30

COUNTY ROAD 166

Poor

Over: WOLF CR

S 5 T 54 N R 22 W, Carroll, MO

Built 1940 Load: 7.2 t ADT: 35

COUNTY ROAD 291

Poor

Over: WOLF CR

S 18 T 54 N R 22 W, Carroll, MO

Built 1940 Load: 7.2 t ADT: 35

COUNTY ROAD 130

Poor

Over: COTTONWOOD CR

S 22 T 55 N R 25 W, Carroll, MO

Built 1940 Load: 9.0 t ADT: 15

N MASON ST

Poor

Over: BNSF RR

S 4 T 52 N R 23 W, Carroll, MO

Built 1935 Load: 9.0 t ADT: 1,000

COUNTY ROAD 140

Poor

Over: MOUND CR

S 25 T 55 N R 23 W, Carroll, MO

Built 1950 Load: 9.0 t ADT: 10

COUNTY ROAD 111

Poor

Over: BR OF BURR OAK CR

S 30 T 54 N R 25 W, Carroll, MO

Built 1998 Load: 9.0 t ADT: 15

COUNTY ROAD 351

Poor

Over: BR OF GRAND RVR

S 18 T 54 N R 21 W, Carroll, MO

Built 1950 Load: 9.0 t ADT: 35

COUNTY ROAD 320

Poor

Over: DRAIN DTCH

S 25 T 52 N R 25 W, Carroll, MO

Built 1975 Load: 9.0 t ADT: 40

COUNTY ROAD 150

Poor

Over: BRIDGE CR

S 25 T 55 N R 23 W, Carroll, MO

Built 1930 Load: 9.9 t ADT: 35

COUNTY ROAD 261

Poor

Over: ROCK BR

S 27 T 55 N R 23 W, Carroll, MO

Built 1940 Load: 9.9 t ADT: 5

COUNTY ROAD 284

Poor

Over: MILLER BR

S 1 T 52 N R 23 W, Carroll, MO

Built 1950 Load: 9.9 t ADT: 5

COUNTY ROAD 180

Poor

Over: TURKEY CR

S 15 T 54 N R 25 W, Carroll, MO

Built 1945 Load: 10.8 t ADT: 25

RT J E

Poor

Over: BRIDGE CR

S 6 T 55 N R 22 W, Carroll, MO

Built 1932 Load: 10.8 t ADT: 494

W FIRST ST

Poor

Over: BRUSH CR

S 32 T 53 N R 23 W, Carroll, MO

Built 1950 Load: 11.7 t ADT: 100

COUNTY ROAD 182

Poor

Over: BR TATER HILL CR

S 18 T 54 N R 24 W, Carroll, MO

Built 1950 Load: 11.7 t ADT: 15

COUNTY ROAD 201

Poor

Over: MCCROSKIE CR

S 10 T 53 N R 24 W, Carroll, MO

Built 1960 Load: 11.7 t ADT: 15

RT CC E

Poor

Over: LIT WAKENDA CR

S 22 T 53 N R 23 W, Carroll, MO

Built 1966 Load: 12.6 t ADT: 236

COUNTY ROAD 214

Poor

Over: MCGILL CR

S 36 T 54 N R 24 W, Carroll, MO

Built 1950 Load: 12.6 t ADT: 25

COUNTY ROAD 111

Poor

Over: MOSS CR DTCH

S 19 T 52 N R 25 W, Carroll, MO

Built 1930 Load: 12.6 t ADT: 5

RT B E

Poor

Over: SAMBO CR

S 28 T 52 N R 22 W, Carroll, MO

Built 1959 Load: 12.6 t ADT: 85

E THIRD ST

Poor

Over: STANDLEY BR

S 33 T 53 N R 23 W, Carroll, MO

Built 1960 Load: 13.5 t ADT: 300

RT JJ S

Poor

Over: WAKENDA CR

S 4 T 52 N R 25 W, Carroll, MO

Built 1961 Load: 13.5 t ADT: 186

COUNTY ROAD 236

Poor

Over: MCCROSKIE CR

S 10 T 53 N R 24 W, Carroll, MO

Built 1950 Load: 14.4 t ADT: 5

COUNTY ROAD 285

Poor

Over: SHOOTMAN CR

S 6 T 53 N R 23 W, Carroll, MO

Built 1950 Load: 14.4 t ADT: 5

COUNTY ROAD 191

Poor

Over: TATER HILL CR

S 33 T 55 N R 24 W, Carroll, MO

Built 1955 Load: 16.2 t ADT: 5

COUNTY ROAD 130

Poor

Over: BR TATER HILL CR

S 20 T 55 N R 23 W, Carroll, MO

Built 1950 Load: 16.2 t ADT: 20

COUNTY ROAD 225

Poor

Over: BR TATER HILL CR

S 30 T 55 N R 23 W, Carroll, MO

Built 1950 Load: 16.2 t ADT: 25

COUNTY ROAD 271

Poor

Over: SHOOTMAN CR

S 1 T 53 N R 23 W, Carroll, MO

Built 1975 Load: 16.2 t ADT: 50

COUNTY ROAD 264

Poor

Over: BR OF WAKENDA CR

S 30 T 53 N R 23 W, Carroll, MO

Built 1940 Load: 16.2 t ADT: 60

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

Related

Browse all → | Rankings →
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.