Total bridges
371
Public highway bridges in Carroll County
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.
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
- 1900s 2
1900–1909
2 bridges
- 1910s 2
1910–1919
2 bridges
- 1920s 10
1920–1929
10 bridges
- 1930s 24
1930–1939
24 bridges
- 1940s
1940–1949
54 bridges
- 1950s
1950–1959
46 bridges
- 1960s 17
1960–1969
17 bridges
- 1970s 18
1970–1979
18 bridges
- 1980s
1980–1989
32 bridges
- 1990s
1990–1999
68 bridges
- 2000s
2000–2009
50 bridges
- 2010s
2010–2019
39 bridges
- 2020s 9
2020–2029
9 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).
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.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Vernon County | 401 | 35.4% | 60.3% | 4.2% | 1988 |
| Nodaway County | 396 | 48% | 37.6% | 14.4% | 1992 |
| Cass County | 377 | 36.3% | 54.9% | 8.8% | 1983 |
| Cape Girardeau County | 374 | 35.8% | 59.1% | 5.1% | 1978 |
| Carroll County (this page) | 371 | 25.9% | 56.1% | 18.1% | 1975 |
| Boone County | 334 | 49.4% | 46.7% | 3.9% | 1984 |
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).
- Lee County, IL · 371 bridges
- Genesee County, MI · 371 bridges
- Fayette County, TX · 371 bridges
- Clinton County, IA · 372 bridges
Similar average build year
Nearest mean year-built outside MO (1975 here).
- San Bernardino County, CA · avg 1975 · 1,422 bridges
- Lane County, OR · avg 1975 · 1,010 bridges
- Fulton County, GA · avg 1975 · 775 bridges
- Westmoreland County, PA · avg 1975 · 620 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (208)
E FOURTH ST
FairOver: STANDLEY BR
S 33 T 53 N R 23 W, Carroll, MO
Built 1940 Load: 16.2 t ADT: 1,000
COUNTY ROAD 140
FairOver: ROCK BR
S 27 T 55 N R 23 W, Carroll, MO
Built 1940 Load: 16.2 t ADT: 20
COUNTY ROAD 225
FairOver: TATER HILL CR
S 31 T 55 N R 23 W, Carroll, MO
Built 1979 Load: 16.2 t ADT: 25
COUNTY ROAD 201
FairOver: MCGILL CR
S 26 T 53 N R 24 W, Carroll, MO
Built 1960 Load: 16.2 t ADT: 15
COUNTY ROAD 165
FairOver: FISH POND CR
S 19 T 53 N R 24 W, Carroll, MO
Built 1940 Load: 16.2 t ADT: 35
COUNTY ROAD 271
FairOver: BR OF BRIDGE CR
S 25 T 55 N R 23 W, Carroll, MO
Built 1958 Load: 17.1 t ADT: 17
COUNTY ROAD 140
FairOver: SALLY BELCHER CR
S 26 T 55 N R 22 W, Carroll, MO
Built 1955 Load: 17.1 t ADT: 5
COUNTY ROAD 301
FairOver: MUD CR
S 28 T 54 N R 23 W, Carroll, MO
Built 1987 Load: 17.1 t ADT: 10
COUNTY ROAD 260
FairOver: BR E FK WAKENDA CR
S 5 T 53 N R 25 W, Carroll, MO
Built 1950 Load: 17.1 t ADT: 35
COUNTY ROAD 260
FairOver: BR OF BIG CR
S 30 T 53 N R 21 W, Carroll, MO
Built 1960 Load: 17.1 t ADT: 20
COUNTY ROAD 274
FairOver: BR OF BIG CR
S 31 T 53 N R 21 W, Carroll, MO
Built 1940 Load: 17.1 t ADT: 15
RT JJ S
FairOver: WAKENDA CR
S 13 T 53 N R 26 W, Carroll, MO
Built 1978 Load: 17.1 t ADT: 184
MO 10 E
FairOver: DRAIN DTCH
S 26 T 52 N R 25 W, Carroll, MO
Built 1929 Load: 17.1 t ADT: 1,990
COUNTY ROAD 141
FairOver: BR OF TURKEY CR
S 34 T 54 N R 25 W, Carroll, MO
Built 1990 Load: 18.0 t ADT: 15
COUNTY ROAD 207
FairOver: UNKNOWN STR
S 14 T 53 N R 24 W, Carroll, MO
Built 1987 Load: 18.0 t ADT: 20
COUNTY ROAD 285
FairOver: LIT WAKENDA CR
S 7 T 52 N R 22 W, Carroll, MO
Built 1930 Load: 18.0 t ADT: 30
COUNTY ROAD 109
FairOver: MOSS CR DTCH
S 6 T 51 N R 25 W, Carroll, MO
Built 1940 Load: 18.0 t ADT: 15
COUNTY ROAD 211
FairOver: BR TATER HILL CR
S 14 T 54 N R 24 W, Carroll, MO
Built 1994 Load: 18.9 t ADT: 20
COUNTY ROAD 161
FairOver: TURKEY CR DTCH
S 36 T 53 N R 25 W, Carroll, MO
Built 1997 Load: 18.9 t ADT: 10
COUNTY ROAD 191
FairOver: TRIB LIT WAKENDA
S 3 T 52 N R 24 W, Carroll, MO
Built 2004 Load: 18.9 t ADT: 10
MO 10 E
FairOver: DRAIN DTCH
S 3 T 51 N R 25 W, Carroll, MO
Built 1929 Load: 18.9 t ADT: 1,990
COUNTY ROAD 140
FairOver: TRIB TATER HILL CR
S 26 T 55 N R 24 W, Carroll, MO
Built 1992 Load: 20.7 t ADT: 15
COUNTY ROAD 160
FairOver: ROCK BR
S 2 T 54 N R 23 W, Carroll, MO
Built 1950 Load: 20.7 t ADT: 40
COUNTY ROAD 280
FairOver: MILLER BR
S 6 T 52 N R 22 W, Carroll, MO
Built 1987 Load: 20.7 t ADT: 35
COUNTY RD 274
FairOver: BR OF WAKENDA CR
S 35 T 53 N R 24 W, Carroll, MO
Built 2012 Load: 20.7 t ADT: 20
RT M E
FairOver: BRIDGE CR
S 13 T 54 N R 23 W, Carroll, MO
Built 1958 Load: 20.7 t ADT: 254
COUNTY ROAD 217
FairOver: BR TATER HILL CR
S 36 T 55 N R 24 W, Carroll, MO
Built 1940 Load: 21.6 t ADT: 35
COUNTY ROAD 131
FairOver: WAKENDA CR
S 3 T 52 N R 25 W, Carroll, MO
Built 1991 Load: 21.6 t ADT: 35
US 65 S
FairOver: SHOOTMAN CR
S 333 T 54 N R 23 W, Carroll, MO
Built 1929 Load: 21.6 t ADT: 3,997
US 65 S
FairOver: LIT WAKENDA CR
S 16 T 53 N R 23 W, Carroll, MO
Built 1932 Load: 21.6 t ADT: 3,494
US 65 S
FairOver: MOUND CR
S 3 T 55 N R 23 W, Carroll, MO
Built 1933 Load: 21.6 t ADT: 1,874
MO 41 S
FairOver: WAKENDA CHUTE
S 3 T 52 N R 21 W, Carroll, MO
Built 1939 Load: 21.6 t ADT: 1,076
MO 41 S
FairOver: DRAIN DTCH
S 35 T 53 N R 21 W, Carroll, MO
Built 1939 Load: 21.6 t ADT: 1,076
MO 139 S
FairOver: HURRICANE CR
S 36 T 55 N R 22 W, Carroll, MO
Built 1964 Load: 21.6 t ADT: 176
COUNTY ROAD 175
FairOver: BR BUNCH HOLLOW CR
S 8 T 55 N R 24 W, Carroll, MO
Built 1993 Load: 22.5 t ADT: 35
COUNTY ROAD 130
FairOver: BR TATER HILL CR
S 23 T 55 N R 24 W, Carroll, MO
Built 1960 Load: 22.5 t ADT: 40
COUNTY ROAD 255
FairOver: WAKENDA CR
S 10 T 52 N R 23 W, Carroll, MO
Built 1910 Load: 22.5 t ADT: 35
MO 10 E
FairOver: DRAIN DTCH
S 34 T 52 N R 25 W, Carroll, MO
Built 1929 Load: 22.5 t ADT: 1,990
COUNTY ROAD 120
FairOver: LICK CR
S 17 T 55 N R 21 W, Carroll, MO
Built 1920 Load: 23.4 t ADT: 10
COUNTY ROAD 250
FairOver: MCGILL CR
S 14 T 53 N R 24 W, Carroll, MO
Built 1997 Load: 23.4 t ADT: 5
RT DD E
FairOver: DRAIN DTCH
S 18 T 52 N R 25 W, Carroll, MO
Built 1957 Load: 23.4 t ADT: 423
RT F S
FairOver: SHOAL CR
S 6 T 55 N R 24 W, Carroll, MO
Built 1955 Load: 23.4 t ADT: 202
RT D S
FairOver: JUDD CR
S 4 T 52 N R 25 W, Carroll, MO
Built 1934 Load: 23.4 t ADT: 178
MO 10 E
FairOver: DRAIN DTCH
S 34 T 52 N R 25 W, Carroll, MO
Built 1926 Load: 24.3 t ADT: 1,990
RT EE S
FairOver: MCGILL CR
S 11 T 53 N R 24 W, Carroll, MO
Built 1954 Load: 24.3 t ADT: 208
RT W E
FairOver: TURKEY CR
S 20 T 54 N R 24 W, Carroll, MO
Built 1949 Load: 24.3 t ADT: 599
RT F S
FairOver: COTTONWOOD CR
S 19 T 55 N R 24 W, Carroll, MO
Built 1951 Load: 24.3 t ADT: 202
COUNTY ROAD 175
FairOver: MC CROSKIE CR
S 20 T 53 N R 24 W, Carroll, MO
Built 1987 Load: 25.2 t ADT: 5
COUNTY ROAD 334
FairOver: UNKNOWN BR
S 33 T 52 N R 24 W, Carroll, MO
Built 1928 Load: 25.2 t ADT: 50
RT WW E
FairOver: ROCK BR
S 34 T 55 N R 23 W, Carroll, MO
Built 1927 Load: 25.2 t ADT: 817
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.