County profile · official public datasets

Gentry County, MO

246 public highway bridges tracked in the FHWA National Bridge Inventory: 52% rated Good, 33.3% Fair, 14.6% Poor.

246
Public bridges
52%
Good condition
14.6%
Poor condition

The verdict

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

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

93rd
of 115 on Poor share
14.6%
Poor-condition share
246
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.

Gentry County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Gentry County ranks #93 of 115 Missouri counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 14.6%). Gentry County, Missouri contains 246 public highway bridges. Roughly 52% are rated “Good,” 33.3% “Fair,” and 14.6% “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

246

Public highway bridges in Gentry County

Good condition

52%

128 of 246 rated 7-9

Fair condition

33.3%

82 of 246 rated 5-6

Poor condition

14.6%

36 of 246 rated 4 or below

In-state Poor-share rank

#93 of 115

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

Condition distribution

Share of 246 NBI-tracked bridges by lowest applicable component rating.

Good
52% (128)
Fair
33.3% (82)
Poor
14.6% (36)

Gentry County's Poor-condition bridges carry 2,275 vehicle crossings a day

That is 4.2% of the county's reported daily bridge traffic on 14.6% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 63 crossings a day against 176 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 246 of 246 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

17.5% of Gentry County's bridges have passed the 50-year mark

43 of the 246 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 52% 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 36.2% of the county's Poor-condition bridge traffic

MO 48 E over 3RD FK PLATTE RVR, built 1929, carries 823 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 36-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 2,275 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Gentry County's bridges were built

246 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 2000s, when 85 of the county's bridges still in the inventory were built, which is 34.6% of those with a recorded year. That cohort is now 15 to 24 years old in the 2024 inventory. Its average build year is 1992, 13 years newer than the Missouri average of 1979.

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

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

The 5 Missouri counties nearest Gentry County in number of bridges, with their condition splits. Its 14.6% Poor share is the 6th-lowest of these 6. Its average build year of 1992 against a peer-group mean of 1981 is 11 years newer.

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

Bridge inventory size and condition shares for Gentry County and the 5 Missouri counties closest to it in inventory size
County Bridges Poor
Buchanan County 246 7.7%
Gentry County (this page) 246 14.6%
Pettis County 243 11.1%
St. Louis city County 240 10%
Lafayette County 238 2.5%
DeKalb County 237 8.4%

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

Similar inventory size

Nearest county inventories outside MO (246 bridges here).

Similar average build year

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

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

All 246 Good 128 Fair 82 Poor 36

Good-condition bridges (128)

370TH ST

Good

Over: BR OF ISLAND CR

S 11 T 62 N R 33 W, Gentry, MO

Built 2016 Load: 40.5 t ADT: 15

US 136 E

Good

Over: W FK GRAND RVR

S 27 T 63 N R 32 W, Gentry, MO

Built 1988 Load: 40.5 t ADT: 2,129

RT T E

Good

Over: FITZGERALD CR

S 3 T 61 N R 30 W, Gentry, MO

Built 2023 Load: 40.5 t ADT: 104

RT T E

Good

Over: BRUSHY CR

S 4 T 61 N R 30 W, Gentry, MO

Built 2023 Load: 40.5 t ADT: 104

RT YY S

Good

Over: BEAR CRK

S 18 T 64 N R 31 W, Gentry, MO

Built 2023 Load: 40.5 t ADT: 178

SOUTH ST

Good

Over: TOWN BR

S 24 T 63 N R 31 W, Gentry, MO

Built 1992 Load: 42.3 t ADT: 875

440 TH ST

Good

Over: BR OF THIRD FK

S 18 T 61 N R 32 W, Gentry, MO

Built 1994 Load: 44.1 t ADT: 35

405 TH ST

Good

Over: BR OF STILLHOUSE B

S 35 T 62 N R 31 W, Gentry, MO

Built 2001 Load: 44.1 t ADT: 15

LONE ROCK TRAIL

Good

Over: BR OF BRUSHY CR

S 28 T 62 N R 30 W, Gentry, MO

Built 2005 Load: 44.1 t ADT: 35

420 TH ROAD

Good

Over: ZOUNDS CR

S 27 T 64 N R 33 W, Gentry, MO

Built 2010 Load: 44.1 t ADT: 20

440TH RD

Good

Over: BR OF THIRD FORK

S 25 T 61 N R 33 W, Gentry, MO

Built 2018 Load: 44.1 t ADT: 20

450TH RD

Good

Over: BR OF THIRD FK

S 19 T 61 N R 32 W, Gentry, MO

Built 2014 Load: 45.0 t ADT: 30

RT DD E

Good

Over: LIT MUDDY CR

S 10 T 64 N R 30 W, Gentry, MO

Built 2005 Load: 47.7 t ADT: 49

BIRCH ST

Good

Over: TOWN BR CR

S 24 T 63 N R 31 W, Gentry, MO

Built 2005 Load: 47.7 t ADT: 997

335 TH ST

Good

Over: SAMPSON CR

S 25 T 63 N R 30 W, Gentry, MO

Built 2014 Load: 48.6 t ADT: 15

RT B S

Good

Over: GRANTHAM CR

S 13 T 64 N R 33 W, Gentry, MO

Built 2023 Load: 48.6 t ADT: 274

DENVER TRAIL

Good

Over: MARTIN BR

S 6 T 64 N R 30 W, Gentry, MO

Built 2000 Load: 49.5 t ADT: 20

250 TH ST

Good

Over: MID FK OF GRAND RV

S 7 T 64 N R 31 W, Gentry, MO

Built 2009 Load: 50.4 t ADT: 15

350TH ST

Good

Over: THOMPSON BR

S 36 T 63 N R 31 W, Gentry, MO

Built 2016 Load: 50.4 t ADT: 15

257 TH ST

Good

Over: BR OF GRANTHAM CR

S 13 T 64 N R 33 W, Gentry, MO

Built 1991 Load: 51.3 t ADT: 15

SADDLE SOAP HILL T

Good

Over: BR OF W FK GRAND R

S 33 T 64 N R 32 W, Gentry, MO

Built 1995 Load: 53.1 t ADT: 30

US 136 E

Good

Over: E FK GRAND RVR

S 23 T 63 N R 31 W, Gentry, MO

Built 2002 Load: 55.8 t ADT: 3,361

CRD 612 ROAD

Good

Over: SAMPSON CR

S 24 T 62 N R 30 W, Gentry, MO

Built 2018 Load: 55.8 t ADT: 10

237 TH ST

Good

Over: BEAR CR

S 1 T 61 N R 32 W, Gentry, MO

Built 2002 Load: 58.5 t ADT: 50

430 TH ROAD

Good

Over: ZOUNDS CR

S 35 T 64 N R 33 W, Gentry, MO

Built 2001 Load: 59.4 t ADT: 5

435TH RD

Good

Over: BR OF ISLAND CR

S 13 T 62 N R 33 W, Gentry, MO

Built 2023 Load: 59.4 t ADT: 35

445 TH ST

Good

Over: HICKORY CR

S 22 T 61 N R 31 W, Gentry, MO

Built 2006 Load: 60.3 t ADT: 15

LONE ROCK TRAIL

Good

Over: BRUSHY CR

S 4 T 61 N R 30 W, Gentry, MO

Built 1989 Load: 75.6 t ADT: 35

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.