Total bridges
411
Public highway bridges in Pittsburg County
County profile · official public datasets
Pittsburg County, OK
411 public highway bridges tracked in the FHWA National Bridge Inventory: 47.2% rated Good, 45% Fair, 7.8% Poor.
- 411
- Public bridges
- 47.2%
- Good condition
- 7.8%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Pittsburg 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.
- 49th
- of 77 on Poor share
- 7.8%
- Poor-condition share
- 411
- 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.
Pittsburg County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Pittsburg County ranks #49 of 77 Oklahoma counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 7.8%). Pittsburg County, Oklahoma contains 411 public highway bridges. Roughly 47.2% are rated “Good,” 45% “Fair,” and 7.8% “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.
Good condition
47.2%
194 of 411 rated 7-9
Fair condition
45%
185 of 411 rated 5-6
Poor condition
7.8%
32 of 411 rated 4 or below
In-state Poor-share rank
#49 of 77
Among Oklahoma counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 411 NBI-tracked bridges by lowest applicable component rating.
Good 47.2% (194)
Fair 45% (185)
Poor 7.8% (32)
Pittsburg County's Poor-condition bridges carry 10,415 vehicle crossings a day
That is 1.2% of the county's reported daily bridge traffic on 7.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 325 crossings a day against 2,122 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 411 of 411 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
57.2% of Pittsburg County's bridges have passed the 50-year mark
235 of the 411 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 47.2% 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 36.5% of the county's Poor-condition bridge traffic
IND. NATION TP over CREEK, built 1968, 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 32-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 10,415 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Pittsburg County's bridges were built
411 bridges with a recorded construction year, grouped by decade
- 1920s 8
1920–1929
8 bridges
- 1930s
1930–1939
60 bridges
- 1940s 32
1940–1949
32 bridges
- 1950s
1950–1959
43 bridges
- 1960s
1960–1969
88 bridges
- 1970s 27
1970–1979
27 bridges
- 1980s
1980–1989
39 bridges
- 1990s
1990–1999
42 bridges
- 2000s
2000–2009
45 bridges
- 2010s 17
2010–2019
17 bridges
- 2020s 10
2020–2029
10 bridges
What this shows Construction peaked in the 1960s, when 88 of the county's bridges still in the inventory were built, which is 21.4% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year is 1971, 6 years older than the Oklahoma average of 1977.
How Pittsburg County compares with Oklahoma's closest counties by inventory size
The 5 Oklahoma counties nearest Pittsburg County in number of bridges, with their condition splits. Its 7.8% Poor share is the 3rd-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.
| 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 (this page) | 411 | 47.2% | 45% | 7.8% | 1971 |
| Pottawatomie County | 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 Pittsburg 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 Pittsburg County, both outside Oklahoma so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside OK (411 bridges here).
- Jefferson County, MO · 411 bridges
- Benton County, AR · 410 bridges
- Union County, NJ · 409 bridges
- Cobb County, GA · 414 bridges
Similar average build year
Nearest mean year-built outside OK (1971 here).
- Wayne County, MI · avg 1971 · 1,026 bridges
- Baltimore County, MD · avg 1971 · 783 bridges
- Washington County, PA · avg 1971 · 655 bridges
- Linn County, OR · avg 1971 · 566 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (411)
6112C
PoorOver: LICK CREEK
2.8 N 1.6 W FEATHERSTO, Pittsburg, OK
Built 1984 Load: 19.1 t ADT: 75
6172C
PoorOver: CREEK
4.5 S 2.3 W HARTSHORNE, Pittsburg, OK
Built 1993 Load: 19.1 t ADT: 100
6172C
PoorOver: CREEK
3. S 2. W HARTSHORNE, Pittsburg, OK
Built 1993 Load: 19.1 t ADT: 100
6112C
PoorOver: HEIFER CREEK OFLOW
1.5W 1SW OF RUSSELVILLE, Pittsburg, OK
Built 2003 Load: 19.1 t ADT: 100
E1290
PoorOver: CREEK
1.5S 4.2W OF INDIANOLA, Pittsburg, OK
Built 2007 Load: 19.1 t ADT: 100
N4035
PoorOver: RABBIT CREEK
3.5W 1.5N OF MCALESTER, Pittsburg, OK
Built 2016 Load: 19.1 t ADT: 150
GRAVEL RD 57SH
PoorOver: UNNAMED CREEK
BTW SECTIONS 57SH & 52SH, Pittsburg, OK
Built 1954 Load: 24.0 t ADT: 100
ROAD D
PoorOver: DRAINAGE FROM ASHLAND LK
SECTION 25A N ASHLAND RD, Pittsburg, OK
Built 1950 Load: 32.7 t ADT: 100
C-TREE ROAD
PoorOver: PEACEABLE CREEK
WEST OF FRONT GATE, Pittsburg, OK
Built 1943 Load: 32.7 t ADT: 2,500
ROAD G
PoorOver: UNNAMED CREEK
SOUTH OF ROADS 6 & F, Pittsburg, OK
Built 1950 Load: 32.7 t ADT: 100
IND. NATION TP
PoorOver: CREEK
50.5 MIS S. JCT I-40, Pittsburg, OK
Built 1968 Load: 42.5 t ADT: 3,800
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.