Total bridges
342
Public highway bridges in Noble County
County profile · official public datasets
Noble County, OK
342 public highway bridges tracked in the FHWA National Bridge Inventory: 35.1% rated Good, 61.4% Fair, 3.5% Poor.
- 342
- Public bridges
- 35.1%
- Good condition
- 3.5%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Noble County posts a better-than-median Poor-condition share among rated counties in the state across mid-size county bridge inventory.
- Top 29%
- lowest Poor share in state
- 3.5%
- Poor-condition share
- 342
- 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.
Noble County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Noble County ranks #22 of 77 Oklahoma counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 3.5%). Noble County, Oklahoma contains 342 public highway bridges. Roughly 35.1% are rated “Good,” 61.4% “Fair,” and 3.5% “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
35.1%
120 of 342 rated 7-9
Fair condition
61.4%
210 of 342 rated 5-6
Poor condition
3.5%
12 of 342 rated 4 or below
In-state Poor-share rank
#22 of 77
Among Oklahoma counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 342 NBI-tracked bridges by lowest applicable component rating.
Good 35.1% (120)
Fair 61.4% (210)
Poor 3.5% (12)
Noble County's Poor-condition bridges carry 582 vehicle crossings a day
That is 0.1% of the county's reported daily bridge traffic on 3.5% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 49 crossings a day against 1,822 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 342 of 342 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
51.5% of Noble County's bridges have passed the 50-year mark
176 of the 342 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 35.1% 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 25.8% of the county's Poor-condition bridge traffic
E0480 over ELM CREEK, built 1954, carries 150 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 12-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 582 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Noble County's bridges were built
342 bridges with a recorded construction year, grouped by decade
- 1910s 7
1910–1919
7 bridges
- 1920s 21
1920–1929
21 bridges
- 1930s
1930–1939
23 bridges
- 1940s 15
1940–1949
15 bridges
- 1950s
1950–1959
39 bridges
- 1960s
1960–1969
45 bridges
- 1970s
1970–1979
33 bridges
- 1980s 18
1980–1989
18 bridges
- 1990s
1990–1999
36 bridges
- 2000s
2000–2009
40 bridges
- 2010s
2010–2019
57 bridges
- 2020s 8
2020–2029
8 bridges
What this shows Construction peaked in the 2010s, when 57 of the county's bridges still in the inventory were built, which is 16.7% of those with a recorded year. That cohort is now 5 to 14 years old in the 2024 inventory. Its average build year (1976) matches the Oklahoma average (1977).
How Noble County compares with Oklahoma's closest counties by inventory size
The 5 Oklahoma counties nearest Noble County in number of bridges, with their condition splits. Its 3.5% Poor share is the 1st-lowest of these 6. Its average build year of 1976 against a peer-group mean of 1977 is in line with the group.
Showing the 5 closest of 76 Oklahoma counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Osage County | 366 | 38.3% | 41.8% | 19.9% | 1966 |
| Washita County | 361 | 70.1% | 26.3% | 3.6% | 1976 |
| Noble County (this page) | 342 | 35.1% | 61.4% | 3.5% | 1976 |
| Carter County | 339 | 36% | 59.3% | 4.7% | 1983 |
| Garvin County | 330 | 39.4% | 49.7% | 10.9% | 1977 |
| Cleveland County | 316 | 46.2% | 48.7% | 5.1% | 1984 |
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 Noble 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 Noble County, both outside Oklahoma so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside OK (342 bridges here).
- Stephenson County, IL · 342 bridges
- Winneshiek County, IA · 342 bridges
- Wayne County, IN · 343 bridges
- Norfolk County, MA · 343 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.
Good-condition bridges (120)
U.S. 77
GoodOver: RED ROCK CREEK OFLOW
11.0N OF U.S. 64, Noble, OK
Built 2009 Load: 42.6 t ADT: 570
E0520
GoodOver: OAK CREEK
6E 2.1S OF US177/US64, Noble, OK
Built 1997 Load: 43.5 t ADT: 70
U.S. 177
GoodOver: RED ROCK CREEK
2.3 MI N JCT SH15 W, Noble, OK
Built 1997 Load: 43.5 t ADT: 5,000
U.S. 177
GoodOver: RED ROCK CREEK OFLOW
2.4 MI N JCT SH15 W, Noble, OK
Built 1997 Load: 43.5 t ADT: 5,000
E0480
GoodOver: BLACK BEAR CREEK
.75W SH108/.75N US64, Noble, OK
Built 2004 Load: 43.5 t ADT: 100
S.H. 15
GoodOver: I-35 UNDER
5.4 E OF BILLINGS, Noble, OK
Built 2017 Load: 43.5 t ADT: 800
E0340
GoodOver: CREEK
.8S 3.1E OF BILLINGS, Noble, OK
Built 2018 Load: 45.4 t ADT: 24
I-35 SB
GoodOver: RED ROCK CREEK OFLOW
21.5N PAYNE C/L, Noble, OK
Built 2008 Load: 47.2 t ADT: 8,550
I-35 NB
GoodOver: RED ROCK CREEK OFLOW
21.5N PAYNE C/L, Noble, OK
Built 2008 Load: 47.2 t ADT: 8,600
IRR E0330
GoodOver: CREEK
1S 4.5E of SH156/US77, Noble, OK
Built 2019 Load: 48.1 t ADT: 24
IRR E0420
GoodOver: CREEK
.5N .1E of CM TPK/US77, Noble, OK
Built 2019 Load: 48.1 t ADT: 50
I-35
GoodOver: DOUBLE STOCK PASS UNDER
0.5 MI N PAYNE C/L, Noble, OK
Built 1959 Load: 48.8 t ADT: 16,200
E0450
GoodOver: CREEK
2.5S 1.1W of US412/US77, Noble, OK
Built 2019 Load: 55.3 t ADT: 40
CIMARRON TP
GoodOver: CREEK
T.P. NO 2.40, Noble, OK
Built 1973 Load: 58.8 t ADT: 4,800
E0420
GoodOver: CREEK
.5N 1.1E of US412/US77, Noble, OK
Built 2019 Load: 63.5 t ADT: 50
CIMARRON TP
GoodOver: CO. RD. E0490 UNDER
T.P. NO 22.02, Noble, OK
Built 1973 Load: 67.6 t ADT: 5,100
S.H. 164
GoodOver: E. WARREN CREEK
1.0 MI E OF LUCIEN, Noble, OK
Built 2014 Load: 67.9 t ADT: 620
S.H. 156
GoodOver: DEADMAN CREEK
.8 S OF KAY C/L, Noble, OK
Built 2015 Load: 90.7 t ADT: 640
N3170
GoodOver: GRASSY CREEK
5E .5S OF BILLINGS, Noble, OK
Built 2021 Load: 91.6 t ADT: 24
U.S. 64
GoodOver: WILLOW CREEK
5.1 MI E JCT US 77, Noble, OK
Built 2013 Load: 99.9 t ADT: 3,300
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.