County profile · official public datasets

Ottawa County, OK

271 public highway bridges tracked in the FHWA National Bridge Inventory: 39.1% rated Good, 39.1% Fair, 21.8% Poor.

271
Public bridges
39.1%
Good condition
21.8%
Poor condition

The verdict

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

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

77th
of 77 on Poor share
21.8%
Poor-condition share
271
public highway bridges
1971
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.

Ottawa County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Ottawa County ranks #77 of 77 Oklahoma counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 21.8%). Ottawa County, Oklahoma contains 271 public highway bridges. Roughly 39.1% are rated “Good,” 39.1% “Fair,” and 21.8% “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

271

Public highway bridges in Ottawa County

Good condition

39.1%

106 of 271 rated 7-9

Fair condition

39.1%

106 of 271 rated 5-6

Poor condition

21.8%

59 of 271 rated 4 or below

In-state Poor-share rank

#77 of 77

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

Condition distribution

Share of 271 NBI-tracked bridges by lowest applicable component rating.

Good
39.1% (106)
Fair
39.1% (106)
Poor
21.8% (59)

Ottawa County's Poor-condition bridges carry 12,724 vehicle crossings a day

That is 1.6% of the county's reported daily bridge traffic on 21.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 216 crossings a day against 4,475 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 271 of 271 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

59% of Ottawa County's bridges have passed the 50-year mark

160 of the 271 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 39.1% 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 29.9% of the county's Poor-condition bridge traffic

S.H. 10 over CREEK, built 1944, carries 3,800 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 59-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 12,724 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Ottawa County's bridges were built

271 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1930s, when 59 of the county's bridges still in the inventory were built, which is 21.8% of those with a recorded year. That cohort is now 85 to 94 years old in the 2024 inventory. Its average build year is 1971, 6 years older than the Oklahoma average of 1977.

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

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

The 5 Oklahoma counties nearest Ottawa County in number of bridges, with their condition splits. Its 21.8% Poor share is the 6th-lowest of these 6. Its average build year of 1971 against a peer-group mean of 1977 is 6 years older.

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

Bridge inventory size and condition shares for Ottawa County and the 5 Oklahoma counties closest to it in inventory size
County Bridges Poor
Blaine County 272 7%
Rogers County 272 9.2%
Ottawa County (this page) 271 21.8%
Major County 266 8.3%
McCurtain County 265 11.7%
Sequoyah County 263 4.6%

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

Similar inventory size

Nearest county inventories outside OK (271 bridges here).

Similar average build year

Nearest mean year-built outside OK (1971 here).

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

All 271 Good 106 Fair 106 Poor 59

Poor-condition bridges (59)

N4520

Poor

Over: CREEK

2.5 NE 1 E OF AFTON, Ottawa, OK

Built 1939 Load: 0.0 t ADT: 100

IRR E0090

Poor

Over: CREEK

1.N 2.2E OF 137 & 10, Ottawa, OK

Built 1939 Load: 0.0 t ADT: 100

E0125

Poor

Over: LOST CREEK

.5W OF SENECA, Ottawa, OK

Built 1940 Load: 0.0 t ADT: 100

5802C

Poor

Over: CREEK

.5 E .5 S OF PICHER, Ottawa, OK

Built 1965 Load: 0.0 t ADT: 100

N4530

Poor

Over: CREEK

3.5 MI N OF NARCISSA, Ottawa, OK

Built 1938 Load: 2.9 t ADT: 100

IRR N4520

Poor

Over: CREEK

0.4 MI S OF E0190, Ottawa, OK

Built 1939 Load: 2.9 t ADT: 50

N4530

Poor

Over: CREEK

3.5 MI N OF NARCISSA, Ottawa, OK

Built 1938 Load: 3.9 t ADT: 100

IRR N4640

Poor

Over: TRIB TO SPRING RIVER

1.5N 3.5E OF QUAPAW, Ottawa, OK

Built 2009 Load: 4.2 t ADT: 100

IRR E0010

Poor

Over: FOUR MILE CREEK

5.5W 1.0NOF PITCHER, Ottawa, OK

Built 1930 Load: 4.3 t ADT: 100

E0190

Poor

Over: CREEK

0.1 MI W OF N4520, Ottawa, OK

Built 1939 Load: 7.0 t ADT: 100

IRR N4570

Poor

Over: LITTLE ELM CREEK

N4570E0100003, Ottawa, OK

Built 1919 Load: 7.8 t ADT: 24

N4530

Poor

Over: HORSE CREEK

2.0E.&.5S. OF AFTON, Ottawa, OK

Built 1939 Load: 7.8 t ADT: 200

IRR E0120

Poor

Over: CREEK

2S .6W JCT SH10/SH137, Ottawa, OK

Built 1919 Load: 8.8 t ADT: 100

IRR E0022

Poor

Over: LYTLE CREEK

ON 7TH ST IN PITCHER, Ottawa, OK

Built 1940 Load: 8.8 t ADT: 50

IRR N4550

Poor

Over: CREEK

.5N OF COMMERCE, Ottawa, OK

Built 1965 Load: 9.8 t ADT: 650

N4550

Poor

Over: HUDSON CREEK

2.0E&1.2S OF NARISSA, Ottawa, OK

Built 1939 Load: 11.7 t ADT: 100

IRR N4570

Poor

Over: CREEK

1.2 W OF QUAPAW, Ottawa, OK

Built 1939 Load: 12.7 t ADT: 100

N4510

Poor

Over: CREEK

1.25S 2W OF NARCISSA, Ottawa, OK

Built 1938 Load: 13.7 t ADT: 100

IRR N4540

Poor

Over: CREEK

1.6S & 1.0N OF NARCISSA, Ottawa, OK

Built 1938 Load: 13.7 t ADT: 40

IRR N4540

Poor

Over: LITTLE HORSE CREEK

.1 N. & 3.0 E. OF AFTON, Ottawa, OK

Built 1939 Load: 13.7 t ADT: 50

IRR E0174

Poor

Over: CREEK

2.0 E. 1.0 N. OF FAIRLAND, Ottawa, OK

Built 1940 Load: 14.7 t ADT: 50

5834C

Poor

Over: CREEK

7.W .1S OF MIAMI, Ottawa, OK

Built 1974 Load: 14.7 t ADT: 100

IRR N4674

Poor

Over: CREEK

2.5S & 3.2E OF WYANDOTTE, Ottawa, OK

Built 1939 Load: 15.6 t ADT: 100

N4550

Poor

Over: CREEK

2.5W&2.0S OF FAIRLAND, Ottawa, OK

Built 1940 Load: 15.6 t ADT: 100

E0200

Poor

Over: CREEK

1S&1.7W JCTUS60&SH125, Ottawa, OK

Built 1939 Load: 15.7 t ADT: 100

IRR 5834C

Poor

Over: CREEK

6.5 N. & 1.0 W. OF AFTON, Ottawa, OK

Built 1940 Load: 16.2 t ADT: 100

IRR 5806C

Poor

Over: CREEK

1.2E OF QUAWPAW ON PRO, Ottawa, OK

Built 1939 Load: 16.5 t ADT: 400

IRR N4590

Poor

Over: CREEK

1.6E&0.5 N OF FAIRLAND, Ottawa, OK

Built 1939 Load: 17.9 t ADT: 200

IRR E0094

Poor

Over: CREEK

12E .5N OF MIAMI, Ottawa, OK

Built 1938 Load: 18.4 t ADT: 100

N4590

Poor

Over: CREEK

1.5N. 1.8E. FAIRLAND, Ottawa, OK

Built 1939 Load: 18.6 t ADT: 100

IRR N4676

Poor

Over: CREEK

1.5S .5E OF PEORIA, Ottawa, OK

Built 1940 Load: 18.8 t ADT: 100

IRR 5840C

Poor

Over: SHAWNEE BRANCH

2.8S 1.2W 10&10C, Ottawa, OK

Built 1940 Load: 18.9 t ADT: 100

IRR E0140

Poor

Over: CREEK

1.0N&0.9W OF NARCISSA, Ottawa, OK

Built 1940 Load: 19.0 t ADT: 200

IRR N4650

Poor

Over: FLINT CREEK

.1N OF HWY 10 & 10C, Ottawa, OK

Built 1939 Load: 19.2 t ADT: 100

E0020

Poor

Over: FOUR MILE CREEK

5.7W OF US 69, Ottawa, OK

Built 1939 Load: 19.2 t ADT: 100

E0080

Poor

Over: CREEK

22ND AVE @ R/R, Ottawa, OK

Built 1950 Load: 19.5 t ADT: 1,000

E0170

Poor

Over: CREEK

.7E OF U.S. 69, Ottawa, OK

Built 1920 Load: 19.6 t ADT: 100

OLD U.S. 59

Poor

Over: CREEK

2.5 W. 1.0N. DOTYVILLE, Ottawa, OK

Built 1936 Load: 19.6 t ADT: 100

IRR E0210

Poor

Over: CREEK

2.5 S. & 1.2 E. FAIRLAND, Ottawa, OK

Built 1939 Load: 19.6 t ADT: 100

IRR 5802C

Poor

Over: ELM CREEK

2.2W OF CARDIN, Ottawa, OK

Built 1940 Load: 19.6 t ADT: 100

JOSEPHINE SMITH PK

Poor

Over: CREEK

.9 S OF LINCOLNVILLE, Ottawa, OK

Built 1936 Load: 19.6 t ADT: 100

IRR E0180

Poor

Over: CREEK

1.5E .3N OF FAIRLAND, Ottawa, OK

Built 1950 Load: 19.6 t ADT: 10

IRR E0020

Poor

Over: LYTLE CREEK

E0020N4580001, Ottawa, OK

Built 1970 Load: 19.6 t ADT: 200

IRR E0165

Poor

Over: SYCAMORE CREEK

1.5N 1.E OF KELLEYVILLE, Ottawa, OK

Built 1975 Load: 19.6 t ADT: 400

IRR 5844C

Poor

Over: CREEK

1.N.E. 0.5 E. OF PEORIA, Ottawa, OK

Built 1940 Load: 19.7 t ADT: 100

IRR E0060

Poor

Over: ELM CREEK

E0060N4530001, Ottawa, OK

Built 1939 Load: 20.1 t ADT: 300

IRR E0140

Poor

Over: CREEK

E0140N4550007, Ottawa, OK

Built 1939 Load: 20.6 t ADT: 100

IRR N4550

Poor

Over: CREEK

2.7S.& 2.5 W. OF FAIRLAND, Ottawa, OK

Built 1940 Load: 21.5 t ADT: 100

E0170

Poor

Over: CREEK

1N 2.2E OF FAIRLAND, Ottawa, OK

Built 1938 Load: 23.0 t ADT: 100

S.H. 10

Poor

Over: CREEK

7.6 MI N DELAWARE CO, Ottawa, OK

Built 1944 Load: 25.7 t ADT: 3,800

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

Related

Browse all → | Rankings →
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.