County profile · official public datasets

Dunklin County, MO

214 public highway bridges tracked in the FHWA National Bridge Inventory: 43% rated Good, 50.5% Fair, 6.5% Poor.

214
Public bridges
43%
Good condition
6.5%
Poor condition

The verdict

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

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

Top 30%
lowest Poor share in state
6.5%
Poor-condition share
214
public highway bridges
1977
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.

Dunklin County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Dunklin County ranks #35 of 115 Missouri counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6.5%). Dunklin County, Missouri contains 214 public highway bridges. Roughly 43% are rated “Good,” 50.5% “Fair,” and 6.5% “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

214

Public highway bridges in Dunklin County

Good condition

43%

92 of 214 rated 7-9

Fair condition

50.5%

108 of 214 rated 5-6

Poor condition

6.5%

14 of 214 rated 4 or below

In-state Poor-share rank

#35 of 115

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

Condition distribution

Share of 214 NBI-tracked bridges by lowest applicable component rating.

Good
43% (92)
Fair
50.5% (108)
Poor
6.5% (14)

Dunklin County's Poor-condition bridges carry 19,655 vehicle crossings a day

That is 7.1% of the county's reported daily bridge traffic on 6.5% of its bridges: Poor-condition structures carry more traffic than their share of the inventory. Each Poor bridge averages 1,404 crossings a day against 1,081 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 214 of 214 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

36% of Dunklin County's bridges have passed the 50-year mark

77 of the 214 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 43% 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 24.8% of the county's Poor-condition bridge traffic

MO 53 S over DRAIN DTCH NO 2, built 1939, carries 4,879 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 14-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 19,655 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Dunklin County's bridges were built

214 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1980s, when 43 of the county's bridges still in the inventory were built, which is 20.1% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1977) matches the Missouri average (1979).

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

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

The 5 Missouri counties nearest Dunklin County in number of bridges, with their condition splits. Its 6.5% Poor share is the 1st-lowest of these 6. Its average build year of 1977 against a peer-group mean of 1977 is in line with the group.

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

Bridge inventory size and condition shares for Dunklin County and the 5 Missouri counties closest to it in inventory size
County Bridges Poor
Daviess County 222 24.3%
Dunklin County (this page) 214 6.5%
Putnam County 213 15.5%
Barton County 211 10%
Caldwell County 208 10.6%
Pemiscot County 206 9.2%

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

Similar inventory size

Nearest county inventories outside MO (214 bridges here).

Similar average build year

Nearest mean year-built outside MO (1977 here).

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

All 214 Good 92 Fair 108 Poor 14

All bridges (214)

COUNTY RD # 513

Good

Over: DRAIN DTCH

S 10 T 17 N R 8 E, Dunklin, MO

Built 1990 Load: 32.4 t ADT: 50

US 412 E

Good

Over: ST FRANCIS RVR

S 7 T 16 N R 7 E, Dunklin, MO

Built 2002 Load: 32.4 t ADT: 7,687

COUNTY RD 314

Good

Over: DRAIN DTCH

S 16 T 21 N R 9 E, Dunklin, MO

Built 2008 Load: 32.4 t ADT: 50

RT NN S

Good

Over: BELLE FOUNTAIN DTC

S 15 T 16 N R 10 E, Dunklin, MO

Built 1988 Load: 32.4 t ADT: 2,114

COUNTY RD # 522

Good

Over: DRAIN DTCH

S 19 T 18 N R 10 E, Dunklin, MO

Built 1993 Load: 33.3 t ADT: 100

COUNTY RD 102

Good

Over: MAIN DTCH LATERAL

S 23 T 23 N R 9 E, Dunklin, MO

Built 2006 Load: 33.3 t ADT: 100

COUNTY RD 531

Good

Over: POLECAT SLU DTCH

S 6 T 17 N R 9 E, Dunklin, MO

Built 2007 Load: 33.3 t ADT: 100

POLLOCK ST

Good

Over: DRAIN DTCH

S 3 T 21 N R 9 E, Dunklin, MO

Built 2020 Load: 33.3 t ADT: 250

COUNTY RD # 512

Good

Over: DRAIN DTCH

S 13 T 18 N R 9 E, Dunklin, MO

Built 1977 Load: 34.2 t ADT: 100

US 62 E

Good

Over: DRAIN DTCH NO 1

S 1 T 22 N R 9 E, Dunklin, MO

Built 1971 Load: 34.2 t ADT: 2,173

COUNTY RD # 562

Good

Over: POLECAT SLU DTCH

S 13 T 17 N R 8 E, Dunklin, MO

Built 2003 Load: 34.2 t ADT: 100

RT P E

Good

Over: HONEY CYPRESS DITC

S 3 T 17 N R 8 E, Dunklin, MO

Built 2010 Load: 34.2 t ADT: 147

COUNTY RD 214

Good

Over: DRAIN DTCH NO 19

S 19 T 22 N R 10 E, Dunklin, MO

Built 1981 Load: 35.1 t ADT: 100

COUNTY RD 110

Good

Over: MAIN DTCH

S 25 T 23 N R 9 E, Dunklin, MO

Built 2009 Load: 35.1 t ADT: 100

FLOYD ST

Good

Over: BUFFALO DTCH

S 36 T 19 N R 9 E, Dunklin, MO

Built 2014 Load: 35.1 t ADT: 100

MO 53 S

Good

Over: MALRIAL DTCH

S 11 T 22 N R 8 E, Dunklin, MO

Built 2018 Load: 35.1 t ADT: 5,857

COUNTY RD 415

Good

Over: DRAIN DTCH

S 36 T 20 N R 9 E, Dunklin, MO

Built 1989 Load: 36.0 t ADT: 100

MO 164 E

Good

Over: ELK CHUTE DITCH

S 23 T 17 N R 9 E, Dunklin, MO

Built 2008 Load: 36.0 t ADT: 1,869

RT F S

Good

Over: DRAIN DTCH NO 25

S 17 T 16 N R 7 E, Dunklin, MO

Built 2010 Load: 36.0 t ADT: 256

COUNTY RD 531

Good

Over: BUFFALO CR

S 13 T 17 N R 8 E, Dunklin, MO

Built 2013 Load: 36.0 t ADT: 50

MO 25 S

Good

Over: UP RR

S 34 T 23 N R 10 E, Dunklin, MO

Built 1977 Load: 36.9 t ADT: 3,081

RT TT S

Good

Over: BELFONTAIN DTCH

S 20 T 16 N R 10 E, Dunklin, MO

Built 2016 Load: 37.8 t ADT: 250

COUNTY RD 227

Good

Over: MAIN DTCH

S 9 T 22 N R 9 E, Dunklin, MO

Built 2012 Load: 38.7 t ADT: 5

RT N E

Good

Over: UPPER BUFFALO CR

S 23 T 17 N R 8 E, Dunklin, MO

Built 1987 Load: 38.7 t ADT: 1,056

RT N E

Good

Over: HONEY CYPRESS DITC

S 21 T 17 N R 8 E, Dunklin, MO

Built 2018 Load: 39.6 t ADT: 940

COUNTY RD 116

Good

Over: DRAIN DTCH

S 36 T 23 N R 8 E, Dunklin, MO

Built 2020 Load: 39.6 t ADT: 100

MO 25 S

Good

Over: DRAIN DTCH NO 19

S 6 T 20 N R 10 E, Dunklin, MO

Built 1978 Load: 40.5 t ADT: 2,782

RT HH W

Good

Over: MAIN DTCH

S 27 T 20 N R 10 E, Dunklin, MO

Built 2016 Load: 40.5 t ADT: 98

MO 153 S

Good

Over: TAYLOR SLU

S 31 T 20 N R 10 E, Dunklin, MO

Built 2023 Load: 40.5 t ADT: 585

US 412 E

Good

Over: DRAIN DTCH NO 66

S 33 T 19 N R 10 E, Dunklin, MO

Built 2003 Load: 41.4 t ADT: 4,921

US 412 E

Good

Over: DRAIN DTCH NO 251

S 3 T 18 N R 10 E, Dunklin, MO

Built 2003 Load: 41.4 t ADT: 4,921

MO 164 E

Good

Over: UPPER BUFFALO CR

S 3 T 16 N R 8 E, Dunklin, MO

Built 1987 Load: 43.2 t ADT: 1,222

RT B S

Good

Over: MAIN DTCH

S 21 T 21 N R 9 E, Dunklin, MO

Built 1983 Load: 45.0 t ADT: 215

COUNTY RD 122

Good

Over: DRAIN DTCH

S 1 T 22 N R 9 E, Dunklin, MO

Built 2019 Load: 45.9 t ADT: 100

MONROE ST

Good

Over: DRAIN DTCH

S 3 T 21 N R 9 E, Dunklin, MO

Built 2016 Load: 46.8 t ADT: 200

US 412 E

Good

Over: DRAIN DTCH NO 259

S 3 T 18 N R 10 E, Dunklin, MO

Built 2003 Load: 48.6 t ADT: 4,921

RT P E

Good

Over: BUFFALO DTCH

S 5 T 17 N R 9 E, Dunklin, MO

Built 2016 Load: 49.5 t ADT: 830

RT M S

Good

Over: LATERAL DTCH NO 1

S 16 T 20 N R 10 E, Dunklin, MO

Built 1993 Load: 50.4 t ADT: 836

US 412 E

Good

Over: DRAIN DTCH NO 1

S 4 T 18 N R 10 E, Dunklin, MO

Built 2003 Load: 53.1 t ADT: 4,921

COUNTY RD # 531

Good

Over: DRAIN DTCH

S 19 T 18 N R 8 E, Dunklin, MO

Built 2000 Load: 54.9 t ADT: 200

RT NN S

Good

Over: N DEERING DRAIN DT

S 34 T 18 N R 10 E, Dunklin, MO

Built 1983 Load: 54.9 t ADT: 2,188

RT ZZ E

Good

Over: DITCH NO. 2

S 4 T 17 N R 10 E, Dunklin, MO

Built 2017 Load: 55.8 t ADT: 44

US 412 E

Good

Over: DRAIN DTCH NO 36

S 5 T 18 N R 10 E, Dunklin, MO

Built 2001 Load: 63.9 t ADT: 4,322

RT NN S

Good

Over: LATERAL DTCH NO 76

S 15 T 18 N R 10 E, Dunklin, MO

Built 1993 Load: 70.2 t ADT: 2,299

COUNTY RD # 568

Good

Over: HONEY CRYPRESS DTC

S 17 T 17 N R 8 E, Dunklin, MO

Built 1993 Load: 72.0 t ADT: 50

RT O S

Good

Over: SNIPE SLU

S 3 T 18 N R 9 E, Dunklin, MO

Built 2018 Load: 73.8 t ADT: 2,170

RT NN S

Good

Over: LATERAL DTCH NO 75

S 10 T 18 N R 10 E, Dunklin, MO

Built 1993 Load: 74.7 t ADT: 2,299

RT NN S

Good

Over: LATERAL DTCH NO 2

S 3 T 18 N R 10 E, Dunklin, MO

Built 1993 Load: 78.3 t ADT: 2,299

RT P E

Good

Over: POLE CAT DRAIN DTC

S 1 T 17 N R 8 E, Dunklin, MO

Built 2006 Load: 82.8 t ADT: 501

COUNTY RD # 728

Good

Over: DRAIN DTCH

S 8 T 16 N R 10 E, Dunklin, MO

Built 2001 Load: 99.9 t ADT: 50

Read our methodology - how this data is sourced, computed, and verified.

Related

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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.