County profile · official public datasets

Stone County, MO

64 public highway bridges tracked in the FHWA National Bridge Inventory: 50% rated Good, 43.8% Fair, 6.3% Poor.

64
Public bridges: 50%
Good condition: 6.3%
Poor condition

The verdict

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

Stone County posts a better-than-median Poor-condition share among rated counties in the state across rated county bridge inventory.

Top 28%
lowest Poor share in state: 6.3%
Poor-condition share: 64
public highway bridges: 1982
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.

Stone County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Stone County ranks #32 of 115 Missouri counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6.3%). Stone County, Missouri contains 64 public highway bridges. Roughly 50% are rated “Good,” 43.8% “Fair,” and 6.3% “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 Stone County

Good condition

50%

32 of 64 rated 7-9

Fair condition

43.8%

28 of 64 rated 5-6

Poor condition

6.3%

4 of 64 rated 4 or below

In-state Poor-share rank

#32 of 115

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

Condition distribution

Share of 64 NBI-tracked bridges by lowest applicable component rating.

Good

50% (32)

Fair

43.8% (28)

Poor

6.3% (4)

Stone County's Poor-condition bridges carry 13,558 vehicle crossings a day

That is 12.1% of the county's reported daily bridge traffic on 6.3% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 3,390 crossings a day against 1,126 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 64 of 64 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

39.1% of Stone County's bridges have passed the 50-year mark

25 of the 64 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 50% 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 68.1% of the county's Poor-condition bridge traffic

MO 13 N over TABLE ROCK LK, built 1956, carries 9,237 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 4-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 13,558 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

3
1930s

3
1940s

2
1950s

9
1960s

6
1970s

2
1980s

4
1990s

7
2000s

18
2010s

6
2020s

4

What this shows Construction peaked in the 2000s, when 18 of the county's bridges still in the inventory were built, which is 28.1% of those with a recorded year. That cohort is now 15 to 24 years old in the 2024 inventory. Its average build year (1982) matches the Missouri average (1979).

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

The 5 Missouri counties nearest Stone County in number of bridges, with their condition splits. Its 6.3% Poor share is the 1st-lowest of these 6. Its average build year of 1982 against a peer-group mean of 1967 is 15 years newer.

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

Bridge inventory size and condition shares for Stone County and the 5 Missouri counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Dent County	75	21.3%	70.7%	8%	1969
Douglas County	75	18.7%	74.7%	6.7%	1963
Maries County	69	31.9%	52.2%	15.9%	1974
Stone County (this page)	64	50%	43.8%	6.3%	1982
Shannon County	63	25.4%	63.5%	11.1%	1961
Hickory County	57	38.6%	43.9%	17.5%	1968

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

Similar inventory size

Nearest county inventories outside MO (64 bridges here).

Southeast Fairbanks County, AK · 64 bridges
Delta County, CO · 64 bridges
Sedgwick County, CO · 64 bridges
Hancock County, GA · 64 bridges

Similar average build year

Nearest mean year-built outside MO (1982 here).

Oklahoma County, OK · avg 1982 · 1,216 bridges
Milwaukee County, WI · avg 1982 · 893 bridges
Champaign County, IL · avg 1982 · 727 bridges
Broward County, FL · avg 1982 · 686 bridges

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

All 64 Good 32 Fair 28 Poor 4

All bridges (64)

Sort:

Stone County Bridge Snapshot

Condition distribution

Stone County's Poor-condition bridges carry 13,558 vehicle crossings a day

39.1% of Stone County's bridges have passed the 50-year mark

One structure carries 68.1% of the county's Poor-condition bridge traffic

How Stone 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 (64)

LANGLEY FORD RD

OTOE RD

RT M E

MEDICAL SPRINGS DR

RT M E

RT AA S

MO 76 E

RT A E

MO 265 S

RT BB E

MO 173 S

MO 86 E

MO 248 E

JASMINE RD

RT A E

FLAT CREEK RD

RT V E

RT M E

MO 248 W

RT U E

BOSTON MOUNTAIN RD

MO 76 E

MO 176 E

MO 176 E

MO 13 S

BEAVER DAM RD

MO 86 E

DODGE HOLLOW RD

QUAIL SPUR RD

GRISSOM FORD RD

HOLT WOODS

RT AA S

PLEASANT VALLEY RD

PVT COYOTE CROSSIN

PVT ARMADILLO LN S

THE LOOP

EQUINE VALLEY RD

ROUNDHOUSE RD

COUNTY RD V-70

MO 86 E

RAILEY CREEK RD

RAILEY CREEK RD

SWINGING BRIDGE RD

MO 248 E

OLD WIRE RD

RT V W

RAILEY CREEK RD

RT A E

MO 265 S

MO 265 S

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