County profile · official public datasets

Mingo County, WV

165 public highway bridges tracked in the FHWA National Bridge Inventory: 29.1% rated Good, 55.8% Fair, 15.2% Poor.

165
Public bridges: 29.1%
Good condition: 15.2%
Poor condition

The verdict

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

Mingo County pairs a better-than-median Poor-condition share among rated counties in the state with a newer average build year than the state inventory.

Top 38%
lowest Poor share in state: 15.2%
Poor-condition share: 165
public highway bridges: 1992
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.

Mingo County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Mingo County ranks #21 of 55 West Virginia counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 15.2%). Mingo County, West Virginia contains 165 public highway bridges. Roughly 29.1% are rated “Good,” 55.8% “Fair,” and 15.2% “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

165

Public highway bridges in Mingo County

Good condition

29.1%

48 of 165 rated 7-9

Fair condition

55.8%

92 of 165 rated 5-6

Poor condition

15.2%

25 of 165 rated 4 or below

In-state Poor-share rank

#21 of 55

Among West Virginia counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 165 NBI-tracked bridges by lowest applicable component rating.

Good

29.1% (48)

Fair

55.8% (92)

Poor

15.2% (25)

Mingo County's Poor-condition bridges carry 32,970 vehicle crossings a day

That is 13.9% of the county's reported daily bridge traffic on 15.2% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 1,319 crossings a day against 707 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 165 of 165 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

13.9% of Mingo County's bridges have passed the 50-year mark

23 of the 165 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 29.1% 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 20.3% of the county's Poor-condition bridge traffic

US 119 over CSX RAILROAD, built 1970, carries 6,700 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 25-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 32,970 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1920s

1
1930s

4
1940s

3
1950s

2
1960s

2
1970s

22
1980s

20
1990s

56
2000s

29
2010s

20
2020s

6

What this shows Construction peaked in the 1990s, when 56 of the county's bridges still in the inventory were built, which is 33.9% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year is 1992, 12 years newer than the West Virginia average of 1980.

How Mingo County compares with West Virginia's closest counties by inventory size

The 5 West Virginia counties nearest Mingo County in number of bridges, with their condition splits. Its 15.2% Poor share is the 2nd-lowest of these 6. Its average build year of 1992 against a peer-group mean of 1978 is 14 years newer.

Showing the 5 closest of 54 West Virginia counties eligible for comparison.

Bridge inventory size and condition shares for Mingo County and the 5 West Virginia counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Wood County	180	42.2%	35.6%	22.2%	1980
Mercer County	174	2.3%	72.4%	25.3%	1977
Mingo County (this page)	165	29.1%	55.8%	15.2%	1992
Wayne County	163	20.9%	60.7%	18.4%	1982
Wyoming County	160	3.1%	63.8%	33.1%	1985
Lewis County	159	21.4%	65.4%	13.2%	1966

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 Mingo 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 Mingo County, both outside West Virginia so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside WV (165 bridges here).

Cleburne County, AL · 165 bridges
Randolph County, AL · 165 bridges
Plumas County, CA · 165 bridges
Leon County, FL · 165 bridges

Similar average build year

Nearest mean year-built outside WV (1992 here).

Johnson County, KS · avg 1992 · 781 bridges
Wake County, NC · avg 1992 · 760 bridges
Benton County, AR · avg 1992 · 410 bridges
Nodaway County, MO · avg 1992 · 396 bridges

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

All 165 Good 48 Fair 92 Poor 25

All bridges (165)

Sort:

Mingo County Bridge Snapshot

Condition distribution

Mingo County's Poor-condition bridges carry 32,970 vehicle crossings a day

13.9% of Mingo County's bridges have passed the 50-year mark

One structure carries 20.3% of the county's Poor-condition bridge traffic

How Mingo County compares with West Virginia'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 (165)

HARP 932

US 52

CR 65/70

COUNTY ROUTE 14/12

COUNTY ROUTE 49/1

CR 65/3

KY 194

CR 65/79

WV 65

COUNTY ROUTE 49/2

CR 3/1

COUNTY ROUTE 65/5

CR 65/5

US 119 Alternate

CR 3/5

COUNTY ROUTE 1

WV 65

CR 52/25

COUNTY ROUTE 3/5

CO 8

CR 52/2

CR 1

CR 14/3

CR 3/5

CR 52/26

CR 65/12

CR 6/7

CR 65/60

CR 2

CR 3/5

CR 2/2

CR 13

CR 65/3

CR 65/12

CR 3/5

CR 65/56

CR 9/21

CR 3/5

CR 3/5

CR 65/34

CR 10

CR 10/4

CR 7/6

CR 13

HARP ROUTE 930

CR 9/12

Harp Route 925

CR 3

CR 10/1

CR 6

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