Total bridges
377
Public highway bridges in Cass County
County profile · official public datasets
Cass County, MO
377 public highway bridges tracked in the FHWA National Bridge Inventory: 36.3% rated Good, 54.9% Fair, 8.8% Poor.
- 377
- Public bridges
- 36.3%
- Good condition
- 8.8%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Cass County posts a higher-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- 59th
- of 115 on Poor share
- 8.8%
- Poor-condition share
- 377
- public highway bridges
- 1983
- 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.
Cass County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Cass County ranks #59 of 115 Missouri counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 8.8%). Cass County, Missouri contains 377 public highway bridges. Roughly 36.3% are rated “Good,” 54.9% “Fair,” and 8.8% “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
36.3%
137 of 377 rated 7-9
Fair condition
54.9%
207 of 377 rated 5-6
Poor condition
8.8%
33 of 377 rated 4 or below
In-state Poor-share rank
#59 of 115
Among Missouri counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 377 NBI-tracked bridges by lowest applicable component rating.
Good 36.3% (137)
Fair 54.9% (207)
Poor 8.8% (33)
Cass County's Poor-condition bridges carry 24,433 vehicle crossings a day
That is 2.7% of the county's reported daily bridge traffic on 8.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 740 crossings a day against 2,054 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 377 of 377 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
39% of Cass County's bridges have passed the 50-year mark
147 of the 377 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 36.3% 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 42.2% of the county's Poor-condition bridge traffic
MO 7 S over IS 49, built 1965, carries 10,317 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 33-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 24,433 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Cass County's bridges were built
377 bridges with a recorded construction year, grouped by decade
- 1900s 10
1900–1909
10 bridges
- 1910s 6
1910–1919
6 bridges
- 1920s 13
1920–1929
13 bridges
- 1930s 16
1930–1939
16 bridges
- 1940s 14
1940–1949
14 bridges
- 1950s 18
1950–1959
18 bridges
- 1960s
1960–1969
53 bridges
- 1970s 19
1970–1979
19 bridges
- 1980s 8
1980–1989
8 bridges
- 1990s
1990–1999
53 bridges
- 2000s
2000–2009
83 bridges
- 2010s
2010–2019
70 bridges
- 2020s 14
2020–2029
14 bridges
What this shows Construction peaked in the 2000s, when 83 of the county's bridges still in the inventory were built, which is 22% of those with a recorded year. That cohort is now 15 to 24 years old in the 2024 inventory. Its average build year (1983) matches the Missouri average (1979).
How Cass County compares with Missouri's closest counties by inventory size
The 5 Missouri counties nearest Cass County in number of bridges, with their condition splits. Its 8.8% Poor share is the 4th-lowest of these 6. Its average build year of 1983 against a peer-group mean of 1983 is in line with the group.
Showing the 5 closest of 114 Missouri counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Jefferson County | 411 | 33.6% | 63% | 3.4% | 1981 |
| Vernon County | 401 | 35.4% | 60.3% | 4.2% | 1988 |
| Nodaway County | 396 | 48% | 37.6% | 14.4% | 1992 |
| Cass County (this page) | 377 | 36.3% | 54.9% | 8.8% | 1983 |
| Cape Girardeau County | 374 | 35.8% | 59.1% | 5.1% | 1978 |
| Carroll County | 371 | 25.9% | 56.1% | 18.1% | 1975 |
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 Cass 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 Cass County, both outside Missouri so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside MO (377 bridges here).
- Monterey County, CA · 377 bridges
- Ogle County, IL · 377 bridges
- Butler County, OH · 377 bridges
- Butler County, PA · 378 bridges
Similar average build year
Nearest mean year-built outside MO (1983 here).
- Dallas County, TX · avg 1983 · 3,230 bridges
- Bexar County, TX · avg 1983 · 2,342 bridges
- Sedgwick County, KS · avg 1983 · 1,333 bridges
- Will County, IL · avg 1983 · 649 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Fair-condition bridges (207)
CO RD 378
FairOver: TENNESSEE CR
S 14 T 44 N R 31 W, Cass, MO
Built 1995 Load: 18.0 t ADT: 35
339 ST
FairOver: KNOB CR
S 24 T 43 N R 29 W, Cass, MO
Built 1990 Load: 18.0 t ADT: 50
179 ST
FairOver: CRAWFORD CR
S 14 T 46 N R 30 W, Cass, MO
Built 1971 Load: 18.9 t ADT: 130
RODIER RD
FairOver: BR OF MASSEY CR
S 6 T 44 N R 32 W, Cass, MO
Built 1955 Load: 18.9 t ADT: 120
OLD TRAIL RD
FairOver: CAMP CR
S 27 T 45 N R 30 W, Cass, MO
Built 1920 Load: 18.9 t ADT: 45
PECULIAR DR S
FairOver: MILLERS CR
S 32 T 46 N R 32 W, Cass, MO
Built 1923 Load: 18.9 t ADT: 1,628
DILLON RD
FairOver: BR OF BIG CR
S 18 T 45 N R 29 W, Cass, MO
Built 1997 Load: 19.8 t ADT: 125
BARNARD RD
FairOver: OLD CHNL GRAND RVR
S 1 T 42 N R 31 W, Cass, MO
Built 1920 Load: 20.7 t ADT: 45
STAELY MOND
FairOver: BIG CR
S 35 T 46 N R 30 W, Cass, MO
Built 1990 Load: 21.6 t ADT: 70
MULLEN RD
FairOver: WEST FK
S 1 T 45 N R 32 W, Cass, MO
Built 1999 Load: 21.6 t ADT: 60
247 ST
FairOver: BR OF WOLF CR
S 31 T 45 N R 31 W, Cass, MO
Built 1995 Load: 21.6 t ADT: 120
MO 2 E
FairOver: GRAND RVR
S 17 T 44 N R 32 W, Cass, MO
Built 1964 Load: 22.5 t ADT: 3,633
209 ST
FairOver: CRAWFORD CR
S 5 T 45 N R 29 W, Cass, MO
Built 1977 Load: 22.5 t ADT: 15
CREEKMOOR DR
FairOver: TRIB OF CREEKMOOR
S 5 T 46 N R 32 W, Cass, MO
Built 2006 Load: 22.5 t ADT: 50
RT O S
FairOver: PONEY CR
S 13 T 44 N R 32 W, Cass, MO
Built 1960 Load: 22.5 t ADT: 1,146
RT Y S
FairOver: EAST CR
S 11 T 45 N R 33 W, Cass, MO
Built 1956 Load: 22.5 t ADT: 2,417
RT D S
FairOver: MASSEY CR
S 28 T 45 N R 33 W, Cass, MO
Built 1968 Load: 23.4 t ADT: 3,623
DORSETT HILL RD
FairOver: BLACK CR
S 35 T 43 N R 32 W, Cass, MO
Built 1996 Load: 23.4 t ADT: 45
161 ST
FairOver: BR OF EAST CR
S 4 T 46 N R 29 W, Cass, MO
Built 2000 Load: 23.4 t ADT: 40
JOHNSON DR
FairOver: TRIB OF SILVER LK
S 17 T 46 N R 32 W, Cass, MO
Built 2006 Load: 23.4 t ADT: 4,400
COUNTY RD 227 ST
FairOver: CAMP CR
S 18 T 45 N R 30 W, Cass, MO
Built 2003 Load: 24.3 t ADT: 35
COUNTY RD E 333 ST
FairOver: BR OF GRAND RVR
S 23 T 43 N R 32 W, Cass, MO
Built 2003 Load: 24.3 t ADT: 45
LITTLE RD
FairOver: PANTHER CR
S 25 T 44 N R 29 W, Cass, MO
Built 2006 Load: 24.3 t ADT: 50
RT M S
FairOver: CAMP BR CR
S 6 T 44 N R 29 W, Cass, MO
Built 1964 Load: 24.3 t ADT: 304
RT B E
FairOver: LOST CR
S 28 T 43 N R 29 W, Cass, MO
Built 1941 Load: 24.3 t ADT: 474
PURVIS RD
FairOver: BIG CR
S 28 T 46 N R 30 W, Cass, MO
Built 1910 Load: 25.2 t ADT: 120
PARRIS RD
FairOver: BIG CR
S 35 T 46 N R 30 W, Cass, MO
Built 1910 Load: 25.2 t ADT: 70
235 ST
FairOver: BR OF CAMP CR
S 20 T 45 N R 30 W, Cass, MO
Built 1998 Load: 25.2 t ADT: 40
VAN METER RD
FairOver: BR OF SOUTH FK
S 2 T 43 N R 33 W, Cass, MO
Built 1992 Load: 25.2 t ADT: 45
RT D S
FairOver: CAVE SPR
S 5 T 43 N R 33 W, Cass, MO
Built 1952 Load: 25.2 t ADT: 1,298
RT K S
FairOver: BRANCH CR
S 10 T 45 N R 30 W, Cass, MO
Built 1955 Load: 25.2 t ADT: 678
STRUZICK RD
FairOver: CRAWFORD CR
S 30 T 46 N R 29 W, Cass, MO
Built 1990 Load: 26.1 t ADT: 130
267 ST
FairOver: BR OF PONEY CR
S 6 T 44 N R 33 W, Cass, MO
Built 1930 Load: 26.1 t ADT: 40
STAELY MOND
FairOver: BR OF BIG CR
S 1 T 45 N R 30 W, Cass, MO
Built 1998 Load: 26.1 t ADT: 40
IS 49 N
FairOver: E FK CR
S 31 T 45 N R 31 W, Cass, MO
Built 1965 Load: 26.1 t ADT: 20,566
FREEDOM RD
FairOver: EIGHT MILE CR
S 7 T 44 N R 30 W, Cass, MO
Built 1997 Load: 27.0 t ADT: 100
COUNTY RD E 219 ST
FairOver: BR OF CAMP CR
S 18 T 45 N R 30 W, Cass, MO
Built 2003 Load: 27.0 t ADT: 25
KNIGHT RD
FairOver: E FK MASSEY CR
S 17 T 45 N R 32 W, Cass, MO
Built 2003 Load: 27.0 t ADT: 50
S BOARDMAN RD
FairOver: BIG CR
S 18 T 46 N R 30 W, Cass, MO
Built 2010 Load: 27.0 t ADT: 279
RT D S
FairOver: HARLESS CR
S 29 T 44 N R 33 W, Cass, MO
Built 1952 Load: 27.0 t ADT: 1,298
RT B E
FairOver: DAYTON BR
S 26 T 43 N R 30 W, Cass, MO
Built 1935 Load: 27.0 t ADT: 447
IS 49 S
FairOver: MNA RR
S 5 T 44 N R 31 W, Cass, MO
Built 1965 Load: 27.9 t ADT: 20,082
IS 49 N
FairOver: MNA RR
S 5 T 44 N R 13 W, Cass, MO
Built 1965 Load: 27.9 t ADT: 20,115
GROH RD
FairOver: BR OF MASSEY CR
S 2 T 44 N R 33 W, Cass, MO
Built 1992 Load: 27.9 t ADT: 45
327 ST
FairOver: EIGHT MILE CR
S 14 T 43 N R 31 W, Cass, MO
Built 1992 Load: 27.9 t ADT: 35
267 ST
FairOver: EIGHT MILE CR
S 1 T 44 N R 31 W, Cass, MO
Built 1995 Load: 28.8 t ADT: 100
SOUTH FORK
FairOver: SOUTH FORK CR
S 2 T 43 N R 33 W, Cass, MO
Built 2000 Load: 28.8 t ADT: 60
COUNTY RD 323 ST
FairOver: BR OF KNOB CR
S 10 T 43 N R 29 W, Cass, MO
Built 2003 Load: 28.8 t ADT: 35
IS 49 N
FairOver: CRD 195TH ST CRD 195T
S 29 T 46 N R 32 W, Cass, MO
Built 1968 Load: 29.7 t ADT: 24,997
251 ST
FairOver: BR OF CLEAR CR
S 1 T 44 N R 30 W, Cass, MO
Built 1990 Load: 29.7 t ADT: 45
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.