County profile · official public datasets

Cedar County, MO

112 public highway bridges tracked in the FHWA National Bridge Inventory: 24.1% rated Good, 50.9% Fair, 25% Poor.

112
Public bridges: 24.1%
Good condition: 25%
Poor condition

The verdict

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

Cedar County pairs a higher-than-median Poor-condition share among rated counties in the state with an older average build year than the state inventory.

115th
of 115 on Poor share: 25%
Poor-condition share: 112
public highway bridges: 1967
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.

Cedar County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Cedar County ranks #115 of 115 Missouri counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 25%). Cedar County, Missouri contains 112 public highway bridges. Roughly 24.1% are rated “Good,” 50.9% “Fair,” and 25% “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

112

Public highway bridges in Cedar County

Good condition

24.1%

27 of 112 rated 7-9

Fair condition

50.9%

57 of 112 rated 5-6

Poor condition

25%

28 of 112 rated 4 or below

In-state Poor-share rank

#115 of 115

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

Condition distribution

Share of 112 NBI-tracked bridges by lowest applicable component rating.

Good

24.1% (27)

Fair

50.9% (57)

Poor

25% (28)

Cedar County's Poor-condition bridges carry 7,383 vehicle crossings a day

That is 13% of the county's reported daily bridge traffic on 25% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 264 crossings a day against 531 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 112 of 112 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

56.3% of Cedar County's bridges have passed the 50-year mark

63 of the 112 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 24.1% 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 14.6% of the county's Poor-condition bridge traffic

RT J S over SAC RVR, built 1967, carries 1,081 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 28-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 7,383 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1910s

4
1920s

12
1930s

14
1940s

11
1950s

11
1960s

9
1970s

3
1980s

12
1990s

12
2000s

7
2010s

14
2020s

3

What this shows Construction peaked in the 1930s, when 14 of the county's bridges still in the inventory were built, which is 12.5% of those with a recorded year. That cohort is now 85 to 94 years old in the 2024 inventory. Its average build year is 1967, 12 years older than the Missouri average of 1979.

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

The 5 Missouri counties nearest Cedar County in number of bridges, with their condition splits. Its 25% Poor share is the 6th-lowest of these 6. Its average build year of 1967 against a peer-group mean of 1970 is in line with the group.

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

Bridge inventory size and condition shares for Cedar County and the 5 Missouri counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Crawford County	118	28.8%	63.6%	7.6%	1970
Madison County	118	33.1%	47.5%	19.5%	1965
Ripley County	116	33.6%	61.2%	5.2%	1965
Dallas County	114	41.2%	52.6%	6.1%	1973
Cedar County (this page)	112	24.1%	50.9%	25%	1967
Shelby County	108	28.7%	56.5%	14.8%	1977

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

Similar inventory size

Nearest county inventories outside MO (112 bridges here).

Columbia County, FL · 112 bridges
Sumter County, FL · 112 bridges
Houston County, GA · 112 bridges
Tift County, GA · 112 bridges

Similar average build year

Nearest mean year-built outside MO (1967 here).

Los Angeles County, CA · avg 1967 · 3,547 bridges
Allegheny County, PA · avg 1967 · 1,294 bridges
Sonoma County, CA · avg 1967 · 609 bridges
Merced County, CA · avg 1967 · 528 bridges

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

All 112 Good 27 Fair 57 Poor 28

All bridges (112)

Sort:

Cedar County Bridge Snapshot

Condition distribution

Cedar County's Poor-condition bridges carry 7,383 vehicle crossings a day

56.3% of Cedar County's bridges have passed the 50-year mark

One structure carries 14.6% of the county's Poor-condition bridge traffic

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

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

All bridges (112)

COUNTY RD 300

COUNTY RD 450

COUNTY RD 975

COUNTY RD 701

COUNTY RD 751

COUNTY RD 550

COUNTY RD 425

COUNTY RD 151

COUNTY RD 825

COUNTY RD 150

COUNTY RD 651

COUNTY RD 2451

COUNTY RD 1974

RT Z E

COUNTY RD 480

MO 215 S

COUNTY RD 1350

COUNTY RD 525

COUNTY RD 1025

COUNTY RD 2281

COUNTY RD 1451

COUNTY RD 800

COUNTY RD 418

RT A E

RT N E

COUNTY RD 775

COUNTY RD 325

RT K E

RT AA S

MO 97 S

MO 39 S

RT N E

RT B E

COUNTY RD 1200

COUNTY RD 2225

MO 39 S

MO 39 S

SERVICE ROAD

COUNTY RD 100

COUNTY RD 501

COUNTY RD 425

MO 97 S

COUNTY RD 701

COUNTY RD 1225

MO 32 E

US 54 E

MO 32 E

US 54 E

COUNTY RD 1570

COUNTY RD 2

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