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

93

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.

When Moniteau County's bridges were built

93 bridges with a recorded construction year, grouped by decade

bridges

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.

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

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 Poor
Osage County 100 18%
Mississippi County 99 11.1%
Moniteau County (this page) 93 12.9%
Camden County 92 8.7%
Reynolds County 91 9.9%
Oregon County 84 8.3%

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).

Similar average build year

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

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

Good-condition bridges (26)

FLAG SPRINGS RD

Good

Over: N MOREAU CR

S 1 T 44 N R 16 W, Moniteau, MO

Built 1987 Load: 16.2 t ADT: 15

BAHNER QUARRY RD

Good

Over: TRIB OF N MOREAU C

S 2 T 44 N R 17 W, Moniteau, MO

Built 1988 Load: 23.4 t ADT: 10

PLEASANT HILL RD

Good

Over: BURRIS FORK CR

S 2 T 43 N R 16 W, Moniteau, MO

Built 2007 Load: 24.3 t ADT: 15

BACON BRIDGE RD

Good

Over: TRIB. TO MONITEAU

S 23 T 56 N R 14 W, Moniteau, MO

Built 1988 Load: 32.4 t ADT: 20

HIRST RD

Good

Over: TRIB OF MONITEAU C

S 11 T 45 N R 17 W, Moniteau, MO

Built 1988 Load: 32.4 t ADT: 20

DERBY LAKE RD

Good

Over: BURRIS FORK CR

S 32 T 44 N R 15 W, Moniteau, MO

Built 2001 Load: 32.4 t ADT: 35

RT A E

Good

Over: ENON CR

S 24 T 43 N R 15 W, Moniteau, MO

Built 2023 Load: 33.3 t ADT: 327

RT E N

Good

Over: DRY FK

S 28 T 45 N R 16 W, Moniteau, MO

Built 2011 Load: 34.2 t ADT: 472

MO 87 S

Good

Over: US 50 RP MO87 TO US50E

S 33 T 45 N R 15 W, Moniteau, MO

Built 2008 Load: 37.8 t ADT: 4,569

BIRD HAVEN RD

Good

Over: LIT MONITEAU CR

S 3 T 45 N R 14 W, Moniteau, MO

Built 2010 Load: 37.8 t ADT: 35

LICK FORK RD

Good

Over: LICK FK

S 20 T 44 N R 16 W, Moniteau, MO

Built 1996 Load: 38.7 t ADT: 75

MONITEAU CHURCH RD

Good

Over: HOWARD CR

S 14 T 46 N R 15 W, Moniteau, MO

Built 2014 Load: 38.7 t ADT: 50

WESTVIEW SCHOOL RD

Good

Over: SMITHS CR

S 26 T 44 N R 17 W, Moniteau, MO

Built 2016 Load: 39.6 t ADT: 25

RT CC S

Good

Over: MEDLEN CR

S 7 T 43 N R 15 W, Moniteau, MO

Built 2019 Load: 39.6 t ADT: 276

RT E S

Good

Over: LICK FK

S 5 T 43 N R 16 W, Moniteau, MO

Built 1964 Load: 39.6 t ADT: 288

MO 87 S

Good

Over: BURRIS FORK CR

S 21 T 44 N R 15 W, Moniteau, MO

Built 2002 Load: 40.5 t ADT: 1,422

RT O S

Good

Over: W BRUSH CR

S 6 T 45 N R 15 W, Moniteau, MO

Built 1986 Load: 40.5 t ADT: 282

OLD SWISS RD

Good

Over: TRIB OF EAST BRUSH

S 3 T 45 N R 15 W, Moniteau, MO

Built 2023 Load: 40.5 t ADT: 10

KUBLI RD

Good

Over: N MOREAU CR

S 10 T 44 N R 15 W, Moniteau, MO

Built 2006 Load: 41.4 t ADT: 25

BAHNER QUARRY RD

Good

Over: WILLOW FORK CR

S 26 T 45 N R 17 W, Moniteau, MO

Built 2008 Load: 41.4 t ADT: 50

RT E S

Good

Over: SMITH FORK CR

S 16 T 44 N R 16 W, Moniteau, MO

Built 2005 Load: 44.1 t ADT: 326

RT N E

Good

Over: LIT MONITEAU CR

S 34 T 46 N R 14 W, Moniteau, MO

Built 2002 Load: 51.3 t ADT: 232

SMITHS CREEK RD

Good

Over: SMITHS CR

S 10 T 44 N R 16 W, Moniteau, MO

Built 2013 Load: 57.6 t ADT: 100

GAMBLE RD

Good

Over: BURRIS FK BR

S 28 T 44 N R 15 W, Moniteau, MO

Built 2019 Load: 60.3 t ADT: 25

NEWKIRK CEMETERY R

Good

Over: TRIB TO SMITH FK

S 26 T 44 N R 17 W, Moniteau, MO

Built 2002 Load: 99.9 t ADT: 25

US 50 E

Good

Over: SCOTT BR

S 33 T 45 N R 15 W, Moniteau, MO

Built 2008 Load: 99.9 t ADT: 3,587

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.