County profile · official public datasets

Bollinger County, MO

124 public highway bridges tracked in the FHWA National Bridge Inventory: 30.6% rated Good, 54% Fair, 15.3% Poor.

124
Public bridges: 30.6%
Good condition: 15.3%
Poor condition

The verdict

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

Bollinger 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.

98th
of 115 on Poor share: 15.3%
Poor-condition share: 124
public highway bridges: 1962
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.

Bollinger County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Bollinger County ranks #98 of 115 Missouri counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 15.3%). Bollinger County, Missouri contains 124 public highway bridges. Roughly 30.6% are rated “Good,” 54% “Fair,” and 15.3% “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

124

Public highway bridges in Bollinger County

Good condition

30.6%

38 of 124 rated 7-9

Fair condition

54%

67 of 124 rated 5-6

Poor condition

15.3%

19 of 124 rated 4 or below

In-state Poor-share rank

#98 of 115

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

Condition distribution

Share of 124 NBI-tracked bridges by lowest applicable component rating.

Good

30.6% (38)

Fair

54% (67)

Poor

15.3% (19)

Bollinger County's Poor-condition bridges carry 1,127 vehicle crossings a day

That is 1.4% of the county's reported daily bridge traffic on 15.3% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 59 crossings a day against 501 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 124 of 124 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

59.7% of Bollinger County's bridges have passed the 50-year mark

74 of the 124 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 30.6% 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 37% of the county's Poor-condition bridge traffic

RT ZZ E over LIT CROOKED CR, built 1961, carries 417 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 19-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 1,127 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

4
1910s

3
1920s

24
1930s

18
1940s

4
1950s

8
1960s

7
1970s

9
1980s

11
1990s

8
2000s

11
2010s

12
2020s

5

What this shows Construction peaked in the 1920s, when 24 of the county's bridges still in the inventory were built, which is 19.4% of those with a recorded year. That cohort is now 95 to 104 years old in the 2024 inventory. Its average build year is 1962, 17 years older than the Missouri average of 1979.

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

The 5 Missouri counties nearest Bollinger County in number of bridges, with their condition splits. Its 15.3% Poor share is the 5th-lowest of these 6. Its average build year of 1962 against a peer-group mean of 1973 is 11 years older.

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

Bridge inventory size and condition shares for Bollinger County and the 5 Missouri counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Iron County	126	30.2%	60.3%	9.5%	1962
Bollinger County (this page)	124	30.6%	54%	15.3%	1962
Christian County	121	41.3%	51.2%	7.4%	1978
Perry County	120	27.5%	55%	17.5%	1965
Schuyler County	120	65.8%	30.8%	3.3%	1989
Laclede County	119	31.1%	58.8%	10.1%	1971

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

Similar inventory size

Nearest county inventories outside MO (124 bridges here).

Bannock County, ID · 124 bridges
Breathitt County, KY · 124 bridges
Caldwell County, LA · 124 bridges
St. Mary County, LA · 124 bridges

Similar average build year

Nearest mean year-built outside MO (1962 here).

Berks County, PA · avg 1962 · 667 bridges
Pecos County, TX · avg 1962 · 470 bridges
Bristol County, MA · avg 1962 · 384 bridges
Norfolk County, MA · avg 1962 · 343 bridges

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

All 124 Good 38 Fair 67 Poor 19

All bridges (124)

Sort:

Bollinger County Bridge Snapshot

Condition distribution

Bollinger County's Poor-condition bridges carry 1,127 vehicle crossings a day

59.7% of Bollinger County's bridges have passed the 50-year mark

One structure carries 37% of the county's Poor-condition bridge traffic

How Bollinger 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 (124)

COUNTY RD 846

COUNTY RD 340

COUNTY RD 238

COUNTY RD 420

COUNTY RD 302

RT P E

COUNTY RD 310

COUNTY RD 360

COUNTY RD 408

COUNTY RD 501

RT K S

COUNTY RD 200

COUNTY RD 804

COUNTY RD 614

MO 51 S

MO 91 S

RT A E

RT MM S

RT MM S

MO 72 E

RT N E

RT B S

RT E E

COUNTY RD 234

MO 91 S

COUNTY RD 530

COUNTY RD 848

MO 34 E

MO 34 E

MO 51 S

RT T E

RT T E

COUNTY RD 506

MO 34 E

MO 91 S

MO 51 S

RT U S

COUNTY RD 708

MO 51 S

RT B S

COUNTY RD 378

COUNTY RD 418

RT T E

RT E E

COUNTY RD 736

MO 51 S

MO 51 S

MO 34 E

COUNTY RD 360

CRD 224

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