County profile · official public datasets

Johnston County, OK

154 public highway bridges tracked in the FHWA National Bridge Inventory: 40.3% rated Good, 55.8% Fair, 3.9% Poor.

154
Public bridges
40.3%
Good condition
3.9%
Poor condition

The verdict

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

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

Top 32%
lowest Poor share in state
3.9%
Poor-condition share
154
public highway bridges
1976
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.

Johnston County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Johnston County ranks #25 of 77 Oklahoma counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 3.9%). Johnston County, Oklahoma contains 154 public highway bridges. Roughly 40.3% are rated “Good,” 55.8% “Fair,” and 3.9% “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

154

Public highway bridges in Johnston County

Good condition

40.3%

62 of 154 rated 7-9

Fair condition

55.8%

86 of 154 rated 5-6

Poor condition

3.9%

6 of 154 rated 4 or below

In-state Poor-share rank

#25 of 77

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

Condition distribution

Share of 154 NBI-tracked bridges by lowest applicable component rating.

Good
40.3% (62)
Fair
55.8% (86)
Poor
3.9% (6)

Johnston County's Poor-condition bridges carry 449 vehicle crossings a day

That is 0.5% of the county's reported daily bridge traffic on 3.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 75 crossings a day against 979 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 154 of 154 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

42.9% of Johnston County's bridges have passed the 50-year mark

66 of the 154 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 40.3% 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 31.2% of the county's Poor-condition bridge traffic

3542C over CREEK, built 1984, carries 140 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 6-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 449 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Johnston County's bridges were built

154 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 2010s, when 22 of the county's bridges still in the inventory were built, which is 14.3% of those with a recorded year. That cohort is now 5 to 14 years old in the 2024 inventory. Its average build year (1976) matches the Oklahoma average (1977).

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

How Johnston County compares with Oklahoma's closest counties by inventory size

The 5 Oklahoma counties nearest Johnston County in number of bridges, with their condition splits. Its 3.9% Poor share is the 3rd-lowest of these 6. Its average build year of 1976 against a peer-group mean of 1976 is in line with the group.

Showing the 5 closest of 76 Oklahoma counties eligible for comparison.

Bridge inventory size and condition shares for Johnston County and the 5 Oklahoma counties closest to it in inventory size
County Bridges Poor
Delaware County 160 18.1%
Haskell County 155 6.5%
Johnston County (this page) 154 3.9%
Roger Mills County 153 0%
Ellis County 152 0%
Jefferson County 150 7.3%

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

Similar inventory size

Nearest county inventories outside OK (154 bridges here).

Similar average build year

Nearest mean year-built outside OK (1976 here).

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

All 154 Good 62 Fair 86 Poor 6

Good-condition bridges (62)

N3650

Good

Over: CREEK

1.7 N & 1 W OF FILMORE, Johnston, OK

Built 1984 Load: 19.1 t ADT: 100

S.H. 48

Good

Over: CREEK

5.8 MI S JCT SH7, Johnston, OK

Built 1939 Load: 19.6 t ADT: 2,600

S.H. 1

Good

Over: CREEK

2.3 MI N JCT SH22, Johnston, OK

Built 1948 Load: 22.2 t ADT: 1,400

S.H. 7

Good

Over: SULPHUR BRANCH CREEK

1.5 MI W JCT SH48, Johnston, OK

Built 1932 Load: 23.9 t ADT: 1,100

S.H. 7

Good

Over: CREEK

.7 MI E JCT SH48, Johnston, OK

Built 1973 Load: 24.0 t ADT: 1,400

S.H. 7

Good

Over: KEEL CREEK

3.8 MI W JCT SH99, Johnston, OK

Built 1934 Load: 24.5 t ADT: 490

S.H. 99

Good

Over: WASHITA RIVER

1.2 MI. S JCT S.H. 22, Johnston, OK

Built 2016 Load: 27.6 t ADT: 2,000

S.H. 48

Good

Over: WALNUT CREEK

2.8 MI N JCT SH7, Johnston, OK

Built 1960 Load: 27.7 t ADT: 1,600

S.H. 22

Good

Over: PENNINGTON CREEK

W. EDGE OF TISHOMINGO, Johnston, OK

Built 1954 Load: 29.0 t ADT: 7,000

3510C

Good

Over: COURTNEY CREEK

2 N & 2.7 E OF MANNSVILLE, Johnston, OK

Built 1976 Load: 29.9 t ADT: 125

E1830

Good

Over: CREEK

.9 N & 1.3 E OF REAGAN, Johnston, OK

Built 1991 Load: 29.9 t ADT: 100

N3500

Good

Over: ROCK CREEK TRIB.

.6 N & .5 E OF TROY, Johnston, OK

Built 2005 Load: 30.8 t ADT: 100

S.H. 7

Good

Over: BLUE RIVER

2.5E OF S.H. 99, Johnston, OK

Built 2009 Load: 30.8 t ADT: 980

S.H. 7

Good

Over: CREEK

5.5 MI E JCT SH99, Johnston, OK

Built 1933 Load: 31.2 t ADT: 980

OLD ST. HWY. 22

Good

Over: SPRING CREEK

GRAVEL ROAD TO WEST GATE, Johnston, OK

Built 1980 Load: 32.7 t ADT: 30

S.H. 7

Good

Over: CREEK

3.3 MI W JCT SH99, Johnston, OK

Built 1918 Load: 32.7 t ADT: 360

S.H. 7

Good

Over: CREEK

2.8 MI W JCT SH99, Johnston, OK

Built 1918 Load: 32.7 t ADT: 360

S.H. 7

Good

Over: WOLF CREEK

1.5 MI W JCT SH99, Johnston, OK

Built 1918 Load: 32.7 t ADT: 360

S.H. 22

Good

Over: SAND CREEK

.8 MI E JCT SH 1, Johnston, OK

Built 1964 Load: 32.7 t ADT: 4,100

S.H. 99

Good

Over: LITTLE BLUE CREEK

8.9N OF JCT. S.H. 7, Johnston, OK

Built 2011 Load: 32.7 t ADT: 1,200

S.H. 99

Good

Over: PECAN CREEK

2.3 N JCT. S.H. 7, Johnston, OK

Built 2013 Load: 32.7 t ADT: 1,100

S.H. 99

Good

Over: DIAMOND SPRING BRANCH CR

4.4 N JCT. S.H. 7, Johnston, OK

Built 2014 Load: 32.7 t ADT: 1,500

S.H. 99

Good

Over: LITTLE PECAN CREEK

3.7 N JCT S.H. 7 E, Johnston, OK

Built 2013 Load: 32.7 t ADT: 1,500

S.H. 99

Good

Over: CREEK

2.2 MI S PONTOTOC CO, Johnston, OK

Built 1933 Load: 33.4 t ADT: 1,200

3502C

Good

Over: PENNINGTON CREEK

1 N & 4 E OF MILL CREEK, Johnston, OK

Built 1982 Load: 33.6 t ADT: 410

N3510

Good

Over: SAND CREEK

1.6 N & .4 W OF RAVIA, Johnston, OK

Built 1998 Load: 33.6 t ADT: 100

S.H. 1

Good

Over: CREEK

1.8 MI S-W OF JCT SH 22, Johnston, OK

Built 1968 Load: 34.5 t ADT: 2,400

E1800

Good

Over: BLUE RIVER

3S & 1.5E OF CONNERVILLE, Johnston, OK

Built 1993 Load: 34.5 t ADT: 100

S.H. 22

Good

Over: BUTCHER PEN CREEK

4.3 MI. W JCT SH 78, Johnston, OK

Built 2016 Load: 34.5 t ADT: 420

S.H. 99

Good

Over: BUZZARD CREEK

1.8 MI S JCT S.H. 7, Johnston, OK

Built 2018 Load: 34.5 t ADT: 1,500

S.H. 78

Good

Over: CREEK

1.6 MI E SH 22, Johnston, OK

Built 1975 Load: 35.8 t ADT: 2,400

N3500

Good

Over: ROCK CREEK

1.6 N & .5 E OF TROY, Johnston, OK

Built 1997 Load: 36.3 t ADT: 50

3516C

Good

Over: BLUE RIVER

.2 N & 1.8 W OF FOLSOM, Johnston, OK

Built 2000 Load: 36.3 t ADT: 200

N3690

Good

Over: HORSE CREEK

1.1 N & 3.3 E OF NIDA, Johnston, OK

Built 2009 Load: 36.3 t ADT: 100

S.H. 99

Good

Over: BLUE RIVER

3.8MI. S. OF PONTOTOC C/L, Johnston, OK

Built 2009 Load: 36.3 t ADT: 1,200

E1790

Good

Over: WALNUT BRANCH

.1 S 3.6 E OF BROMIDE, Johnston, OK

Built 2017 Load: 36.3 t ADT: 100

S.H. 48A

Good

Over: UNNAMED CREEK

2.2 MI W OF JCT S.H. 48, Johnston, OK

Built 2014 Load: 37.1 t ADT: 810

S.H. 48

Good

Over: SANDY CREEK

3.2 MI S JCT SH7, Johnston, OK

Built 1954 Load: 37.2 t ADT: 1,700

S.H. 1

Good

Over: OFLOW

2.8 MI S-W JCT SH 22, Johnston, OK

Built 1968 Load: 37.2 t ADT: 2,400

S.H. 1

Good

Over: WASHITA RIVER OFLOW

4.1 MI N MARSHALL CO, Johnston, OK

Built 1968 Load: 37.2 t ADT: 2,400

3530C

Good

Over: LITTLE SANDY CREEK

3 N & 3 W OF FILMORE, Johnston, OK

Built 1982 Load: 37.2 t ADT: 370

3504C

Good

Over: CREEK

1.7 E OF CONNERVILLE, Johnston, OK

Built 2015 Load: 37.2 t ADT: 375

N3683

Good

Over: SANDY CREEK

2.8 N 1.8 W OF COLEMAN, Johnston, OK

Built 2022 Load: 37.2 t ADT: 100

E1760

Good

Over: BLUE CREEK

1N & .9E OF CONNORVILLE, Johnston, OK

Built 1995 Load: 40.8 t ADT: 100

S.H. 22

Good

Over: CREEK

10 MI W & N JCT SH78, Johnston, OK

Built 1957 Load: 40.9 t ADT: 520

S.H. 7

Good

Over: PENNINGTON CREEK

4.4 MI W JCT SH99, Johnston, OK

Built 1995 Load: 41.7 t ADT: 400

E1890

Good

Over: BLUE RIVER

3.9 W OF FILMORE, Johnston, OK

Built 1994 Load: 42.6 t ADT: 100

E1990

Good

Over: ROCK CREEK

.7 E OF BEE, Johnston, OK

Built 2001 Load: 44.5 t ADT: 100

3522C

Good

Over: REAGAN CREEK

1.5 S & .5 E OF REAGAN, Johnston, OK

Built 2005 Load: 44.5 t ADT: 105

N3453

Good

Over: CREEK

1.2N & 1.2E OF MANNSVILLE, Johnston, OK

Built 2008 Load: 44.5 t ADT: 100

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.