County profile · official public datasets

Dewey County, OK

169 public highway bridges tracked in the FHWA National Bridge Inventory: 86.4% rated Good, 13% Fair, 0.6% Poor.

169
Public bridges
86.4%
Good condition
0.6%
Poor condition

The verdict

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

Dewey County pairs a top-5% lowest Poor-condition share among rated counties in the state with a newer average build year than the state inventory.

Top 5%
lowest Poor share in state
0.6%
Poor-condition share
169
public highway bridges
1983
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.

Dewey County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Dewey County ranks #4 of 77 Oklahoma counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 0.6%). Dewey County, Oklahoma contains 169 public highway bridges. Roughly 86.4% are rated “Good,” 13% “Fair,” and 0.6% “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

169

Public highway bridges in Dewey County

Good condition

86.4%

146 of 169 rated 7-9

Fair condition

13%

22 of 169 rated 5-6

Poor condition

0.6%

1 of 169 rated 4 or below

In-state Poor-share rank

#4 of 77

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

Condition distribution

Share of 169 NBI-tracked bridges by lowest applicable component rating.

Good
86.4% (146)
Fair
13% (22)
Poor
0.6% (1)

Dewey County's Poor-condition bridges carry 24 vehicle crossings a day

That is 0% of the county's reported daily bridge traffic on 0.6% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 24 crossings a day against 321 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 169 of 169 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

30.8% of Dewey County's bridges have passed the 50-year mark

52 of the 169 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 86.4% 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 100% of the county's Poor-condition bridge traffic

D0668 over GYP CREEK, built 1940, carries 24 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 1-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 24 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Dewey County's bridges were built

169 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1980s, when 32 of the county's bridges still in the inventory were built, which is 18.9% of those with a recorded year. That cohort is now 35 to 44 years old in the 2024 inventory. Its average build year is 1983, 6 years newer than the Oklahoma average of 1977.

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

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

The 5 Oklahoma counties nearest Dewey County in number of bridges, with their condition splits. Its 0.6% Poor share is the 1st-lowest of these 6. Its average build year of 1983 against a peer-group mean of 1974 is 9 years newer.

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

Bridge inventory size and condition shares for Dewey County and the 5 Oklahoma counties closest to it in inventory size
County Bridges Poor
Craig County 180 19.4%
Pawnee County 174 19%
Dewey County (this page) 169 0.6%
Woodward County 168 4.2%
Delaware County 160 18.1%
Haskell County 155 6.5%

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

Similar inventory size

Nearest county inventories outside OK (169 bridges here).

Similar average build year

Nearest mean year-built outside OK (1983 here).

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

All 169 Good 146 Fair 22 Poor 1

All bridges (169)

N2080

Fair

Over: CREEK

3.9 N 3. E OF LEEDY, Dewey, OK

Built 1988 Load: 10.9 t ADT: 24

N2250

Fair

Over: DEEP CREEK

4. W .1 N OF SEILING, Dewey, OK

Built 1970 Load: 16.3 t ADT: 50

N2130

Fair

Over: CREEK

5. E 1.1 N OF VICI, Dewey, OK

Built 1984 Load: 18.1 t ADT: 50

N2050

Fair

Over: CREEK

.9 N. OF LEEDY, Dewey, OK

Built 1915 Load: 19.1 t ADT: 25

FAS 2223

Fair

Over: CREEK

2.2S OF LENORA, Dewey, OK

Built 1939 Load: 19.1 t ADT: 200

N2080

Fair

Over: CREEK

5.7 N 3. E OF LEEDY, Dewey, OK

Built 1940 Load: 19.1 t ADT: 25

U.S. 60

Fair

Over: KIZER CREEK

9.0 MI E JCT S.H. 34, Dewey, OK

Built 1937 Load: 23.6 t ADT: 1,100

E0780

Fair

Over: CREEK

3. S 3.5 W OF OAKWOOD, Dewey, OK

Built 1975 Load: 23.6 t ADT: 25

U.S. 60

Fair

Over: COTTONWOOD CREEK

5.7 MI E JCT S.H. 34, Dewey, OK

Built 1937 Load: 24.5 t ADT: 1,600

U.S. 60

Fair

Over: DEEP CREEK

2.1 MI W JCT U.S. 183, Dewey, OK

Built 1937 Load: 26.3 t ADT: 1,300

FAS 2223

Fair

Over: TEEPEE CREEK

3.5 MI E SH 34, Dewey, OK

Built 1965 Load: 27.2 t ADT: 300

U.S. 60

Fair

Over: SEILING CREEK

0.9 MI E JCT U.S. 183, Dewey, OK

Built 1937 Load: 29.0 t ADT: 2,400

U.S. 60

Fair

Over: CAMP CREEK

5.9 MI W JCT U.S. 183, Dewey, OK

Built 1937 Load: 29.0 t ADT: 1,300

S.H. 34

Fair

Over: CREEK

3.0 MI N CUSTER C/L, Dewey, OK

Built 1932 Load: 30.2 t ADT: 1,500

2226C

Fair

Over: CREEK

4.2 E 2.5 N OF LEEDY, Dewey, OK

Built 1939 Load: 32.7 t ADT: 50

FAS 2224

Fair

Over: CREEK

1.0 S 4.5 E OF FONDA, Dewey, OK

Built 1953 Load: 32.7 t ADT: 150

S.H. 51

Fair

Over: CREEK

1.7 MI W BLAINE C/L, Dewey, OK

Built 1934 Load: 35.0 t ADT: 810

2238C

Fair

Over: CREEK

0.7 E 0.7 S OF CESTOE, Dewey, OK

Built 1981 Load: 35.4 t ADT: 50

2270C

Fair

Over: TRAIL CREEK

1.5 W 1.2 S OF VICI, Dewey, OK

Built 1980 Load: 36.3 t ADT: 50

U.S. 183

Fair

Over: CANADIAN RIVER

16.8 N OF CUSTER C/L, Dewey, OK

Built 2018 Load: 36.3 t ADT: 1,980

E0750

Fair

Over: CREEK

4. N 2.2 E OF LEEDY, Dewey, OK

Built 1982 Load: 40.8 t ADT: 25

FAS 2222

Fair

Over: TRAIL CREEK

5. MI S 6.5 E TALOGA, Dewey, OK

Built 1975 Load: 78.0 t ADT: 150

E0620

Good

Over: CREEK

9.9 E 2. S OF SEILING, Dewey, OK

Built 2000 Load: 0.0 t ADT: 25

2264C

Good

Over: CREEK

6. W 3.3 N OF OAKWOOD, Dewey, OK

Built 1988 Load: 18.1 t ADT: 75

E0680

Good

Over: GYP CREEK

2.6 W & 1.0 N OF CAMARGO, Dewey, OK

Built 2003 Load: 18.1 t ADT: 25

FAS 2221

Good

Over: CREEK

11.1 MI E SRILING, Dewey, OK

Built 1986 Load: 19.1 t ADT: 200

S.H. 47

Good

Over: CREEK

0.4 MI W JCT S.H. 34, Dewey, OK

Built 1938 Load: 19.6 t ADT: 610

N2190

Good

Over: CAMP CREEK

11.E4.7S OF VICI, Dewey, OK

Built 2006 Load: 20.9 t ADT: 25

N2210

Good

Over: CAMP CREEK

7.5 W & 0.3 S OF SEILING, Dewey, OK

Built 1994 Load: 21.8 t ADT: 25

E0770

Good

Over: FIDDLERS CREEK

7.7 E 3. N OF PUTNAM, Dewey, OK

Built 1985 Load: 22.7 t ADT: 24

N2300

Good

Over: OVER TRAIL CREEK

4E OF US183;NE OF PUTNAM, Dewey, OK

Built 2004 Load: 24.5 t ADT: 24

N2240

Good

Over: CREEK

4.5W.2S OF SEILING, Dewey, OK

Built 2006 Load: 24.5 t ADT: 50

2252C

Good

Over: ROUGH CREEK

4.5 W 3.6 N OF FAY, Dewey, OK

Built 1983 Load: 25.4 t ADT: 25

2210C

Good

Over: CREEK

4.7 N 2.5 E OF OAKWOOD, Dewey, OK

Built 1984 Load: 25.4 t ADT: 25

N2120

Good

Over: COTTONWOOD CREEK

4. E 1.1 S OF VICI, Dewey, OK

Built 1989 Load: 25.4 t ADT: 25

N2280

Good

Over: CREEK

1.5E .1S OF TALOGA, Dewey, OK

Built 2001 Load: 25.4 t ADT: 30

U.S. 270

Good

Over: SEILING CREEK

0.3 MI NW JCT U.S. 60, Dewey, OK

Built 1989 Load: 27.2 t ADT: 3,800

E0610

Good

Over: WEST SEILING CREEK

1. S 1.6 W OF SEILING, Dewey, OK

Built 1991 Load: 27.2 t ADT: 25

2212C

Good

Over: GYP CREEK

0.2 S 2.1 W OF CAMARGO, Dewey, OK

Built 1997 Load: 27.2 t ADT: 150

N2340

Good

Over: FLANDERS CREEK

8E; 2.6N OF PUTNAM, Dewey, OK

Built 2009 Load: 27.2 t ADT: 50

E0610

Good

Over: CREEK

6.4E 1S OF VICI, Dewey, OK

Built 2014 Load: 27.2 t ADT: 25

U.S. 270

Good

Over: CREEK

1.0 MI SE JCT U.S. 60, Dewey, OK

Built 1936 Load: 27.3 t ADT: 4,500

2212C

Good

Over: BULL CREEK

3.6 S 2.8 E OF CAMARGO, Dewey, OK

Built 1992 Load: 29.0 t ADT: 300

N2290

Good

Over: CREEK

3E; 1.2S OF PUTNAM, Dewey, OK

Built 2009 Load: 29.0 t ADT: 25

N2330

Good

Over: FIDDLERS CREEK

7.0 E. & 1.6 N. OF PUTNAM, Dewey, OK

Built 2009 Load: 29.0 t ADT: 25

E0610

Good

Over: CREEK

5.3W; 1S OF SEILING, Dewey, OK

Built 2010 Load: 29.0 t ADT: 25

E0630

Good

Over: KIZER CREEK

7.4E 3S OF VICI, Dewey, OK

Built 2014 Load: 29.0 t ADT: 25

S.H. 47

Good

Over: CREEK

5.2 MI E JCT S.H. 34, Dewey, OK

Built 1961 Load: 29.8 t ADT: 590

S.H. 47

Good

Over: CREEK

17.7 MI E JCT S.H. 34, Dewey, OK

Built 1961 Load: 29.8 t ADT: 390

E0830

Good

Over: CREEK

8. S 2. E OF OAKWOOD, Dewey, OK

Built 1960 Load: 29.9 t ADT: 24

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.