Total bridges
408
Public highway bridges in Pottawatomie County
County profile · official public datasets
Pottawatomie County, OK
408 public highway bridges tracked in the FHWA National Bridge Inventory: 21.6% rated Good, 72.1% Fair, 6.4% Poor.
- 408
- Public bridges
- 21.6%
- Good condition
- 6.4%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Pottawatomie County pairs a better-than-median Poor-condition share among rated counties in the state with a newer average build year than the state inventory.
- Top 49%
- lowest Poor share in state
- 6.4%
- Poor-condition share
- 408
- public highway bridges
- 1982
- 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.
Pottawatomie County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Pottawatomie County ranks #38 of 77 Oklahoma counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6.4%). Pottawatomie County, Oklahoma contains 408 public highway bridges. Roughly 21.6% are rated “Good,” 72.1% “Fair,” and 6.4% “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.
Good condition
21.6%
88 of 408 rated 7-9
Fair condition
72.1%
294 of 408 rated 5-6
Poor condition
6.4%
26 of 408 rated 4 or below
In-state Poor-share rank
#38 of 77
Among Oklahoma counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 408 NBI-tracked bridges by lowest applicable component rating.
Good 21.6% (88)
Fair 72.1% (294)
Poor 6.4% (26)
Pottawatomie County's Poor-condition bridges carry 52,155 vehicle crossings a day
That is 4.7% of the county's reported daily bridge traffic on 6.4% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 2,006 crossings a day against 4,429 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 408 of 408 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
36.3% of Pottawatomie County's bridges have passed the 50-year mark
148 of the 408 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 21.6% 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 32.1% of the county's Poor-condition bridge traffic
I-40 over U.S. 177 UNDER, built 1961, carries 16,750 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 26-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 52,155 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Pottawatomie County's bridges were built
408 bridges with a recorded construction year, grouped by decade
- 1900s 1
1900–1909
1 bridges
- 1920s 3
1920–1929
3 bridges
- 1930s 26
1930–1939
26 bridges
- 1940s 35
1940–1949
35 bridges
- 1950s 18
1950–1959
18 bridges
- 1960s
1960–1969
58 bridges
- 1970s 11
1970–1979
11 bridges
- 1980s
1980–1989
49 bridges
- 1990s
1990–1999
64 bridges
- 2000s
2000–2009
109 bridges
- 2010s 30
2010–2019
30 bridges
- 2020s 4
2020–2029
4 bridges
What this shows Construction peaked in the 2000s, when 109 of the county's bridges still in the inventory were built, which is 26.7% of those with a recorded year. That cohort is now 15 to 24 years old in the 2024 inventory. Its average build year is 1982, 5 years newer than the Oklahoma average of 1977.
How Pottawatomie County compares with Oklahoma's closest counties by inventory size
The 5 Oklahoma counties nearest Pottawatomie County in number of bridges, with their condition splits. Its 6.4% Poor share is the 2nd-lowest of these 6. Its average build year of 1982 against a peer-group mean of 1974 is 8 years newer.
Showing the 5 closest of 76 Oklahoma counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Caddo County | 424 | 24.1% | 63.4% | 12.5% | 1979 |
| Kay County | 419 | 30.3% | 63.7% | 6% | 1979 |
| Pittsburg County | 411 | 47.2% | 45% | 7.8% | 1971 |
| Pottawatomie County (this page) | 408 | 21.6% | 72.1% | 6.4% | 1982 |
| Muskogee County | 398 | 37.7% | 52.3% | 10.1% | 1971 |
| Creek County | 395 | 40.5% | 38.7% | 20.8% | 1972 |
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 Pottawatomie 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 Pottawatomie County, both outside Oklahoma so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside OK (408 bridges here).
- Union County, NJ · 409 bridges
- Benton County, AR · 410 bridges
- Jefferson County, MO · 411 bridges
- Coconino County, AZ · 405 bridges
Similar average build year
Nearest mean year-built outside OK (1982 here).
- Jackson County, MO · avg 1982 · 930 bridges
- Milwaukee County, WI · avg 1982 · 893 bridges
- Champaign County, IL · avg 1982 · 727 bridges
- Broward County, FL · avg 1982 · 686 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (408)
E1140
PoorOver: DEER CREEK
3N & 2.4E OF BETHEL ACRES, Pottawatomie, OK
Built 2006 Load: 26.3 t ADT: 100
6359C
PoorOver: COUNCIL CREEK
.8 S & .8 W OF BURNETT, Pottawatomie, OK
Built 1983 Load: 28.1 t ADT: 200
6304C
PoorOver: SQUAW CREEK
2 N & .1 W OF JOHNSON, Pottawatomie, OK
Built 1993 Load: 32.7 t ADT: 1,030
I-40
PoorOver: U.S. 177 UNDER
8.1 MI E OK C/L, Pottawatomie, OK
Built 1961 Load: 37.0 t ADT: 16,750
6318C
PoorOver: CREEK
2.5N & 2.3W OF EARLSBORO, Pottawatomie, OK
Built 1945 Load: 41.7 t ADT: 600
6304C
PoorOver: CREEK
2 N & 1.7 W OF JOHNSON, Pottawatomie, OK
Built 1993 Load: 44.5 t ADT: 1,030
6374C
PoorOver: CREEK
.5 S & .2 W OF WANETTE, Pottawatomie, OK
Built 1995 Load: 44.5 t ADT: 250
U.S. 270 RAMP S-W
PoorOver: I-40 /U.S. 177 UNDER
8.1 MI E OK C/L, Pottawatomie, OK
Built 1961 Load: 46.4 t ADT: 16,100
Read our methodology - how this data is sourced, computed, and verified.
Related
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.