Total bridges
284
Public highway bridges in Tillman County
County profile · official public datasets
Tillman County, OK
284 public highway bridges tracked in the FHWA National Bridge Inventory: 69.4% rated Good, 28.2% Fair, 2.5% Poor.
- 284
- Public bridges
- 69.4%
- Good condition
- 2.5%
- Poor condition
The verdict
According to the Federal Highway Administration's 2024 National Bridge Inventory.
Tillman County pairs a top-quartile lowest Poor-condition share among rated counties in the state with an older average build year than the state inventory.
- Top 21%
- lowest Poor share in state
- 2.5%
- Poor-condition share
- 284
- public highway bridges
- 1962
- 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.
Tillman County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, Tillman County ranks #16 of 77 Oklahoma counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 2.5%). Tillman County, Oklahoma contains 284 public highway bridges. Roughly 69.4% are rated “Good,” 28.2% “Fair,” and 2.5% “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
69.4%
197 of 284 rated 7-9
Fair condition
28.2%
80 of 284 rated 5-6
Poor condition
2.5%
7 of 284 rated 4 or below
In-state Poor-share rank
#16 of 77
Among Oklahoma counties with 5+ bridges, lower share ranks better
Condition distribution
Share of 284 NBI-tracked bridges by lowest applicable component rating.
Good 69.4% (197)
Fair 28.2% (80)
Poor 2.5% (7)
Tillman County's Poor-condition bridges carry 248 vehicle crossings a day
That is 0.3% of the county's reported daily bridge traffic on 2.5% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 35 crossings a day against 422 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 284 of 284 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.
63.7% of Tillman County's bridges have passed the 50-year mark
181 of the 284 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 69.4% 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 20.2% of the county's Poor-condition bridge traffic
E1680 over CREEK, built 1930, carries 50 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 7-bridge count understates how much of the daily burden sits on a single crossing.
Share is of the 248 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.
When Tillman County's bridges were built
284 bridges with a recorded construction year, grouped by decade
- 1910s 1
1910–1919
1 bridges
- 1920s 9
1920–1929
9 bridges
- 1930s
1930–1939
116 bridges
- 1940s 28
1940–1949
28 bridges
- 1950s 18
1950–1959
18 bridges
- 1960s 9
1960–1969
9 bridges
- 1970s 1
1970–1979
1 bridges
- 1980s 14
1980–1989
14 bridges
- 1990s 37
1990–1999
37 bridges
- 2000s 26
2000–2009
26 bridges
- 2010s 18
2010–2019
18 bridges
- 2020s 7
2020–2029
7 bridges
What this shows Construction peaked in the 1930s, when 116 of the county's bridges still in the inventory were built, which is 40.8% of those with a recorded year. That cohort is now 85 to 94 years old in the 2024 inventory. Its average build year is 1962, 15 years older than the Oklahoma average of 1977.
How Tillman County compares with Oklahoma's closest counties by inventory size
The 5 Oklahoma counties nearest Tillman County in number of bridges, with their condition splits. Its 2.5% Poor share is the 2nd-lowest of these 6. Its average build year of 1962 against a peer-group mean of 1973 is 11 years older.
Showing the 5 closest of 76 Oklahoma counties eligible for comparison.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Jackson County | 292 | 58.6% | 39% | 2.4% | 1964 |
| Bryan County | 286 | 41.6% | 48.6% | 9.8% | 1974 |
| Logan County | 284 | 24.3% | 55.6% | 20.1% | 1973 |
| Tillman County (this page) | 284 | 69.4% | 28.2% | 2.5% | 1962 |
| Blaine County | 272 | 66.9% | 26.1% | 7% | 1976 |
| Rogers County | 272 | 44.9% | 46% | 9.2% | 1978 |
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 Tillman 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 Tillman County, both outside Oklahoma so the neighborhoods are not the same-state size table above.
Similar inventory size
Nearest county inventories outside OK (284 bridges here).
- Cambria County, PA · 284 bridges
- Susquehanna County, PA · 284 bridges
- Washington County, TN · 284 bridges
- Gonzales County, TX · 284 bridges
Similar average build year
Nearest mean year-built outside OK (1962 here).
- Berks County, PA · avg 1962 · 667 bridges
- Pecos County, TX · avg 1962 · 470 bridges
- Bristol County, MA · avg 1962 · 384 bridges
- Norfolk County, MA · avg 1962 · 343 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
Good-condition bridges (197)
E1770
GoodOver: CREEK
4.0S & 4.4 E OF MANITOU, Tillman, OK
Built 1930 Load: 32.7 t ADT: 30
7130C
GoodOver: CREEK
5.4N 2.W OF MANITOU, Tillman, OK
Built 1936 Load: 32.7 t ADT: 100
N2230
GoodOver: CREEK
.5W .1S OF MANITOU, Tillman, OK
Built 1936 Load: 32.7 t ADT: 50
N2190
GoodOver: CREEK
7.4 S & 5.4 W. FREDERICK, Tillman, OK
Built 1936 Load: 32.7 t ADT: 40
N2230
GoodOver: CREEK
1.2 N 4.8 E OF DAVIDSON, Tillman, OK
Built 1936 Load: 32.7 t ADT: 50
FAS 7106
GoodOver: CREEK
.9 MI S GRANDFIELD, Tillman, OK
Built 1936 Load: 32.7 t ADT: 100
E1870
GoodOver: CREEK
4.4 N 3.2 W OF DAVIDSON, Tillman, OK
Built 1936 Load: 32.7 t ADT: 40
E1880
GoodOver: CREEK
3.4 N 1. E OF DAVIDSON, Tillman, OK
Built 1936 Load: 32.7 t ADT: 50
E1820
GoodOver: CREEK
1.7 W 1. S OF FREDERICK, Tillman, OK
Built 1936 Load: 32.7 t ADT: 100
E1840
GoodOver: CREEK
1.7 W 3. S OF FREDERICK, Tillman, OK
Built 1936 Load: 32.7 t ADT: 60
E1800
GoodOver: CREEK
1. N .9 E OF FREDERICK, Tillman, OK
Built 1936 Load: 32.7 t ADT: 200
7106C
GoodOver: CREEK
0.3 MI E US 183, Tillman, OK
Built 1936 Load: 32.7 t ADT: 75
7106C
GoodOver: CREEK
5.3 MI E US 183, Tillman, OK
Built 1936 Load: 32.7 t ADT: 50
FAS 7110
GoodOver: CREEK
6.8 MI S FREDERICK, Tillman, OK
Built 1936 Load: 32.7 t ADT: 24
E1840
GoodOver: CREEK
.6 E .5 N OF HOLLISTER, Tillman, OK
Built 1936 Load: 32.7 t ADT: 60
FAS 7111
GoodOver: DEEP RED CREEK
8.0 E 1.3 N MANITOU, Tillman, OK
Built 1937 Load: 32.7 t ADT: 30
N2240
GoodOver: CREEK
.4S .5E OF MANITOU, Tillman, OK
Built 1937 Load: 32.7 t ADT: 50
IRR FAS 7120
GoodOver: CREEK
2.3 MI N LOVELAND, Tillman, OK
Built 1937 Load: 32.7 t ADT: 100
E1840
GoodOver: CREEK
2. S 7. W FREDERICK, Tillman, OK
Built 1937 Load: 32.7 t ADT: 40
E1820
GoodOver: CREEK
1. S 6.3 E OF FREDERICK, Tillman, OK
Built 1937 Load: 32.7 t ADT: 50
E1880
GoodOver: CREEK
1.1S 5.5E OF LOVELAND, Tillman, OK
Built 1937 Load: 32.7 t ADT: 30
N2140
GoodOver: CREEK
4.7S .4W OF TIPTON, Tillman, OK
Built 1937 Load: 32.7 t ADT: 40
N2290
GoodOver: CREEK
.1 S 1. W OF HOLLISTER, Tillman, OK
Built 1937 Load: 32.7 t ADT: 30
FAS 7106
GoodOver: CREEK
1 MI S US 70, Tillman, OK
Built 1937 Load: 32.7 t ADT: 100
7106C
GoodOver: CREEK
3.0 MI E US 183, Tillman, OK
Built 1937 Load: 32.7 t ADT: 75
FAS 7122
GoodOver: CREEK
4.0 S 10.1 E MANITOU, Tillman, OK
Built 1937 Load: 32.7 t ADT: 30
N2410
GoodOver: CREEK
5.8N 1.3W OF CHATTANOOGA, Tillman, OK
Built 1938 Load: 32.7 t ADT: 50
N2310
GoodOver: CREEK
2.2S 7.5E OF MANITOU, Tillman, OK
Built 1938 Load: 32.7 t ADT: 30
FAS 7111
GoodOver: CREEK
6.5 E 5.6 S MANITOU, Tillman, OK
Built 1938 Load: 32.7 t ADT: 40
N2190
GoodOver: CREEK
0.7 S. & 2.5 W. FREDERICK, Tillman, OK
Built 1938 Load: 32.7 t ADT: 60
N2190
GoodOver: CREEK
2.9 S. & 2.0 W. FREDERICK, Tillman, OK
Built 1938 Load: 32.7 t ADT: 50
E1870
GoodOver: CREEK
6. S 3.7 W OF FREDERICK, Tillman, OK
Built 1938 Load: 32.7 t ADT: 50
E1860
GoodOver: CREEK
5.4 N 3. E OF DAVIDSON, Tillman, OK
Built 1938 Load: 32.7 t ADT: 40
FAS 7105
GoodOver: CREEK
0.5 S 8.7 W HOLLISTER, Tillman, OK
Built 1938 Load: 32.7 t ADT: 50
E1740
GoodOver: CREEK
2.5E 1.S OF MANITOU, Tillman, OK
Built 1938 Load: 32.7 t ADT: 30
7106C
GoodOver: CREEK
4.3 MI E US 183, Tillman, OK
Built 1938 Load: 32.7 t ADT: 50
E1750
GoodOver: CREEK
7.3E 2.S OF MANITOU, Tillman, OK
Built 1938 Load: 32.7 t ADT: 30
E1950
GoodOver: CREEK
3.S 6.2W OF GRANFIELD, Tillman, OK
Built 1938 Load: 32.7 t ADT: 40
E1930
GoodOver: CREEK
1.S .8W OF GRANDFIELD, Tillman, OK
Built 1938 Load: 32.7 t ADT: 60
E1860
GoodOver: CREEK
.9 E 5. S OF FREDERICK, Tillman, OK
Built 1938 Load: 32.7 t ADT: 30
E1770
GoodOver: CREEK
4.S 4.7E OF MANITOU, Tillman, OK
Built 1938 Load: 32.7 t ADT: 30
E1950
GoodOver: CREEK
3.S 6.1W OF GRANFIELD, Tillman, OK
Built 1938 Load: 32.7 t ADT: 40
E1790
GoodOver: CREEK
7.9N 4.3E OF LOVELAND, Tillman, OK
Built 1938 Load: 32.7 t ADT: 60
E1870
GoodOver: CREEK
4.4 N 3.4 E OF DAVIDSON, Tillman, OK
Built 1938 Load: 32.7 t ADT: 40
E1930
GoodOver: CREEK
10.3 E 1.6 S OF DAVIDSON, Tillman, OK
Built 1939 Load: 32.7 t ADT: 30
N2270
GoodOver: CREEK
.4 S 3. W OF HOLLISTER, Tillman, OK
Built 1939 Load: 32.7 t ADT: 50
7148C
GoodOver: CREEK
1.4N 6.2W OF CHATTANOOGA, Tillman, OK
Built 1940 Load: 32.7 t ADT: 40
E1710
GoodOver: CREEK
2.N .8E OF MANITOU, Tillman, OK
Built 1940 Load: 32.7 t ADT: 100
FAS 7114
GoodOver: CREEK
1 MI S 6 W FREDERICK, Tillman, OK
Built 1940 Load: 32.7 t ADT: 100
7134C
GoodOver: CREEK
8.8 E .1 S OF DAVIDSON, Tillman, OK
Built 1950 Load: 32.7 t ADT: 60
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.