County profile · official public datasets

Washita County, OK

361 public highway bridges tracked in the FHWA National Bridge Inventory: 70.1% rated Good, 26.3% Fair, 3.6% Poor.

361
Public bridges: 70.1%
Good condition: 3.6%
Poor condition

The verdict

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

Washita 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: 3.6%
Poor-condition share: 361
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.

Washita County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Washita County ranks #23 of 77 Oklahoma counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 3.6%). Washita County, Oklahoma contains 361 public highway bridges. Roughly 70.1% are rated “Good,” 26.3% “Fair,” and 3.6% “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

361

Public highway bridges in Washita County

Good condition

70.1%

253 of 361 rated 7-9

Fair condition

26.3%

95 of 361 rated 5-6

Poor condition

3.6%

13 of 361 rated 4 or below

In-state Poor-share rank

#23 of 77

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

Condition distribution

Share of 361 NBI-tracked bridges by lowest applicable component rating.

Good

70.1% (253)

Fair

26.3% (95)

Poor

3.6% (13)

Washita County's Poor-condition bridges carry 724 vehicle crossings a day

That is 0.3% of the county's reported daily bridge traffic on 3.6% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 56 crossings a day against 612 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 361 of 361 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

37.4% of Washita County's bridges have passed the 50-year mark

135 of the 361 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 70.1% 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 27.6% of the county's Poor-condition bridge traffic

N2246 over CREEK, built 1940, carries 200 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 13-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 724 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1920s

36
1930s

36
1940s

14
1950s

20
1960s

19
1970s

26
1980s

69
1990s

51
2000s

46
2010s

37
2020s

7

What this shows Construction peaked in the 1980s, when 69 of the county's bridges still in the inventory were built, which is 19.1% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year (1976) matches the Oklahoma average (1977).

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

The 5 Oklahoma counties nearest Washita County in number of bridges, with their condition splits. Its 3.6% Poor share is the 4th-lowest of these 6. Its average build year of 1976 against a peer-group mean of 1978 is in line with the group.

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

Bridge inventory size and condition shares for Washita County and the 5 Oklahoma counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Custer County	384	73.2%	25.5%	1.3%	1982
Stephens County	382	29.1%	68.1%	2.9%	1985
Osage County	366	38.3%	41.8%	19.9%	1966
Washita County (this page)	361	70.1%	26.3%	3.6%	1976
Noble County	342	35.1%	61.4%	3.5%	1976
Carter County	339	36%	59.3%	4.7%	1983

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

Similar inventory size

Nearest county inventories outside OK (361 bridges here).

San Mateo County, CA · 361 bridges
Richland County, SC · 361 bridges
Gibson County, IN · 362 bridges
Fayette County, IA · 362 bridges

Similar average build year

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

Marion County, IN · avg 1976 · 958 bridges
Mohave County, AZ · avg 1976 · 641 bridges
Prince George's County, MD · avg 1976 · 576 bridges
New Castle County, DE · avg 1976 · 527 bridges

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

All 361 Good 253 Fair 95 Poor 13

Good-condition bridges (253)

Sort:

Washita County Bridge Snapshot

Condition distribution

Washita County's Poor-condition bridges carry 724 vehicle crossings a day

37.4% of Washita County's bridges have passed the 50-year mark

One structure carries 27.6% of the county's Poor-condition bridge traffic

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

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

Good-condition bridges (253)

N2060

FAS 7514

N2350

E1130

N2160

N2160

S2290

FAS 7514 (E1220)

N2120

E1130

E1250 (7522C)

N2180

IRR N2300

IRR E1100

E1250

E1210

U.S. 183

U.S. 183

S.H. 152

N2050

E1180

E1290

S.H. 152

S.H. 55

E1120

N2350

N2050

E1080

N2150

E1300

E1230

E1110

E1180

E1290

E1210

N2160

S.H. 54A

S.H. 152

E1120

N2370

S.H. 55

N2190

N2080

E1120

S.H. 152

E1170

N2220

N2380

N2280

E1250

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