County profile · official public datasets

Comanche County, OK

593 public highway bridges tracked in the FHWA National Bridge Inventory: 32.4% rated Good, 58.9% Fair, 8.8% Poor.

593
Public bridges: 32.4%
Good condition: 8.8%
Poor condition

The verdict

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

Comanche County posts a higher-than-median Poor-condition share among rated counties in the state across large county bridge inventory.

52nd
of 77 on Poor share: 8.8%
Poor-condition share: 593
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.

Comanche County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Comanche County ranks #52 of 77 Oklahoma counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 8.8%). Comanche County, Oklahoma contains 593 public highway bridges. Roughly 32.4% are rated “Good,” 58.9% “Fair,” and 8.8% “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

593

Public highway bridges in Comanche County

Good condition

32.4%

192 of 593 rated 7-9

Fair condition

58.9%

349 of 593 rated 5-6

Poor condition

8.8%

52 of 593 rated 4 or below

In-state Poor-share rank

#52 of 77

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

Condition distribution

Share of 593 NBI-tracked bridges by lowest applicable component rating.

Good

32.4% (192)

Fair

58.9% (349)

Poor

8.8% (52)

Comanche County's Poor-condition bridges carry 35,361 vehicle crossings a day

That is 2.1% of the county's reported daily bridge traffic on 8.8% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 680 crossings a day against 2,869 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 593 of 593 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

48.1% of Comanche County's bridges have passed the 50-year mark

285 of the 593 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 32.4% 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 42.4% of the county's Poor-condition bridge traffic

FAU 7681 (SHERIDAN over NUMU CREEK, built 1942, carries 14,994 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 52-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 35,361 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1900s

2
1910s

3
1920s

18
1930s

39
1940s

40
1950s

33
1960s

115
1970s

67
1980s

68
1990s

89
2000s

69
2010s

43
2020s

7

What this shows Construction peaked in the 1960s, when 115 of the county's bridges still in the inventory were built, which is 19.4% of those with a recorded year. That cohort is now 55 to 64 years old in the 2024 inventory. Its average build year (1976) matches the Oklahoma average (1977).

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

The 5 Oklahoma counties nearest Comanche County in number of bridges, with their condition splits. Its 8.8% Poor share is the 4th-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.

Bridge inventory size and condition shares for Comanche County and the 5 Oklahoma counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Comanche County (this page)	593	32.4%	58.9%	8.8%	1976
Garfield County	504	27%	61.3%	11.7%	1970
Canadian County	493	49.5%	47.1%	3.4%	1986
Kiowa County	477	65.4%	31.7%	2.9%	1973
Grant County	476	28.2%	64.5%	7.4%	1988
Le Flore County	469	44.3%	44.3%	11.3%	1967

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

Similar inventory size

Nearest county inventories outside OK (593 bridges here).

Butler County, KS · 591 bridges
Montgomery County, AL · 596 bridges
Dane County, WI · 590 bridges
Tulare County, CA · 589 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.

All 593 Good 192 Fair 349 Poor 52

Fair-condition bridges (349)

Sort:

Comanche County Bridge Snapshot

Condition distribution

Comanche County's Poor-condition bridges carry 35,361 vehicle crossings a day

48.1% of Comanche County's bridges have passed the 50-year mark

One structure carries 42.4% of the county's Poor-condition bridge traffic

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

Nationwide counties with similar inventory size or average build year

Similar inventory size

Similar average build year

Fair-condition bridges (349)

IRR E1690

S.H. 36

S.H. 7

CO. RD. E1530

S.H. 36

CO. RD. 1632C

E1710

CRATERVILLE RD

S.H. 7 WB

CO. RD.

S.H. 115

E1760

E1580

I-44 NB

CO. RD. N2666

CO. RD. 1654C

S.H. 7

1622C

1602C

S.H. 49

E1600

1632C

N2610

E1730

CO. RD. 1640C

E1550

1622C

I-44 NB

U.S. 62

1636C

1606C

IRR N2690

U.S. 62

I-44

E1700

I-44 NB

I-44 SB

I-44 NB

I-44 SB

I-44 NB

I-44 SB

E1660

E1680

U.S. 62

E1540

I-44 SB

IRR E1530

I-44

I-44

S.H. 115

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