County profile · official public datasets

Moniteau County, MO

93 public highway bridges tracked in the FHWA National Bridge Inventory: 28% rated Good, 59.1% Fair, 12.9% Poor.

93
Public bridges: 28%
Good condition: 12.9%
Poor condition

The verdict

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

Moniteau 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.

88th
of 115 on Poor share: 12.9%
Poor-condition share: 93
public highway bridges: 1964
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.

Moniteau County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Moniteau County ranks #88 of 115 Missouri counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 12.9%). Moniteau County, Missouri contains 93 public highway bridges. Roughly 28% are rated “Good,” 59.1% “Fair,” and 12.9% “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

Public highway bridges in Moniteau County

Good condition

28%

26 of 93 rated 7-9

Fair condition

59.1%

55 of 93 rated 5-6

Poor condition

12.9%

12 of 93 rated 4 or below

In-state Poor-share rank

#88 of 115

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

Condition distribution

Share of 93 NBI-tracked bridges by lowest applicable component rating.

Good

28% (26)

Fair

59.1% (55)

Poor

12.9% (12)

Moniteau County's Poor-condition bridges carry 2,774 vehicle crossings a day

That is 4.6% of the county's reported daily bridge traffic on 12.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 231 crossings a day against 474 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 93 of 93 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

60.2% of Moniteau County's bridges have passed the 50-year mark

56 of the 93 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 28% 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 33.6% of the county's Poor-condition bridge traffic

MO 179 S over MONITEAU CR, built 1967, carries 931 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 12-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 2,774 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

4
1910s

1
1920s

6
1930s

17
1940s

7
1950s

6
1960s

14
1970s

1
1980s

10
1990s

6
2000s

12
2010s

7
2020s

2

What this shows Construction peaked in the 1930s, when 17 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 85 to 94 years old in the 2024 inventory. Its average build year is 1964, 15 years older than the Missouri average of 1979.

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

The 5 Missouri counties nearest Moniteau County in number of bridges, with their condition splits. Its 12.9% Poor share is the 5th-lowest of these 6. Its average build year of 1964 against a peer-group mean of 1970 is 6 years older.

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

Bridge inventory size and condition shares for Moniteau County and the 5 Missouri counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Osage County	100	37%	45%	18%	1970
Mississippi County	99	26.3%	62.6%	11.1%	1969
Moniteau County (this page)	93	28%	59.1%	12.9%	1964
Camden County	92	47.8%	43.5%	8.7%	1987
Reynolds County	91	22%	68.1%	9.9%	1966
Oregon County	84	22.6%	69%	8.3%	1957

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

Similar inventory size

Nearest county inventories outside MO (93 bridges here).

Baker County, FL · 93 bridges
Banks County, GA · 93 bridges
Haralson County, GA · 93 bridges
Alexander County, IL · 93 bridges

Similar average build year

Nearest mean year-built outside MO (1964 here).

Bergen County, NJ · avg 1964 · 577 bridges
Morris County, NJ · avg 1964 · 508 bridges
Baltimore city County, MD · avg 1964 · 374 bridges
Ross County, OH · avg 1964 · 356 bridges

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

All 93 Good 26 Fair 55 Poor 12

All bridges (93)

Sort:

Moniteau County Bridge Snapshot

Condition distribution

Moniteau County's Poor-condition bridges carry 2,774 vehicle crossings a day

60.2% of Moniteau County's bridges have passed the 50-year mark

One structure carries 33.6% of the county's Poor-condition bridge traffic

How Moniteau 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 (93)

HARMONY SCHOOL RD

BLANK RD

E SPLICE CREEK RD

PAINTERS RD

BRUSH CREEK RD

POSSUM TROT

SPRINGER HILL RD

COPPS CHAPEL RD

ROUND HILL RD

KELLY BRANCH RD

MORROW RD

OLD SWISS RD

RED BIRD RD

HIGH POINT RD

OLD HIGHWAY PP

BACON BRIDGE RD

WILLOW FORK RD

OAK DALE RD

CHAPEL RD

MARKET RD

RT CC S

BRUSH CREEK RD

RT V S

RT D S

MARKET RD

DYNAMITE RIDGE RD

RT T S

RT E S

MAUPIN RD

RT A E

LUPUS RD

RT V S

RT Y S

ACRE RD

MO 87 S

RT C E

OLD SWISS RD

RT W E

RT Y S

RIDGE RD

MO 5 S

US 50 E

MO 87 S

US 50 E

MO 5 S

MO 87 S

BRUSH CREEK RD

JACKET FACTORY RD

MO 179 S

RT O S

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