County profile · official public datasets

Oklahoma County, OK

1,216 public highway bridges tracked in the FHWA National Bridge Inventory: 38.2% rated Good, 55.8% Fair, 6% Poor.

Compiled by PlainBridges

1,216
Public bridges: 38.2%
Good condition: 6%
Poor condition

The verdict

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

Oklahoma 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 44%
lowest Poor share in state: 6%
Poor-condition share: 1,216
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.

Oklahoma County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Oklahoma County ranks #34 of 77 Oklahoma counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6%). Oklahoma County, Oklahoma contains 1,216 public highway bridges. Roughly 38.2% are rated “Good,” 55.8% “Fair,” and 6% “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

1,216

Public highway bridges in Oklahoma County

Good condition

38.2%

465 of 1,216 rated 7-9

Fair condition

55.8%

678 of 1,216 rated 5-6

Poor condition

73 of 1,216 rated 4 or below

In-state Poor-share rank

#34 of 77

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

Condition distribution

Share of 1,216 NBI-tracked bridges by lowest applicable component rating.

Good

38.2% (465)

Fair

55.8% (678)

Poor

6% (73)

Oklahoma County's Poor-condition bridges carry 566,311 vehicle crossings a day

That is 3.1% of the county's reported daily bridge traffic on 6% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 7,758 crossings a day against 15,826 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 1,216 of 1,216 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

38.7% of Oklahoma County's bridges have passed the 50-year mark

471 of the 1,216 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 38.2% 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 17.5% of the county's Poor-condition bridge traffic

I-240 over I-35 UNDER, built 1959, carries 99,100 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 73-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 566,311 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

1910s

2
1920s

8
1930s

39
1940s

38
1950s

116
1960s

153
1970s

195
1980s

181
1990s

179
2000s

148
2010s

101
2020s

56

What this shows Construction peaked in the 1970s, when 195 of the county's bridges still in the inventory were built, which is 16% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year is 1982, 5 years newer than the Oklahoma average of 1977.

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

The 5 Oklahoma counties nearest Oklahoma County in number of bridges, with their condition splits. Its 6% Poor share is the 4th-lowest of these 6. Its average build year of 1982 against a peer-group mean of 1977 is 5 years newer.

Showing the 5 closest of 76 Oklahoma counties eligible for comparison.

Bridge inventory size and condition shares for Oklahoma County and the 5 Oklahoma counties closest to it in inventory size
County	Bridges	Good	Fair	Poor	Avg. built
Oklahoma County (this page)	1,216	38.2%	55.8%	6%	1982
Tulsa County	1,135	47.1%	47.1%	5.7%	1980
Comanche County	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

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

Similar inventory size

Nearest county inventories outside OK (1,216 bridges here).

King County, WA · 1,238 bridges
Williamson County, TX · 1,170 bridges
Orange County, CA · 1,164 bridges
Pima County, AZ · 1,150 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 1,216 Good 465 Fair 678 Poor 73

All bridges (1,216)

Sort:

Oklahoma County Bridge Snapshot

Condition distribution

Oklahoma County's Poor-condition bridges carry 566,311 vehicle crossings a day

38.7% of Oklahoma County's bridges have passed the 50-year mark

One structure carries 17.5% of the county's Poor-condition bridge traffic

How Oklahoma 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

All bridges (1,216)

KILPATRICK TP EB

NE 50TH ST

N.W. 23RD ST.

KILPATRICK TP

KILPATRICK TP

KILPATRICK TP EB

S.H. 152 EB W-N

TURNER TP (I-44)

TURNER TP (I-44)

N LUTHER RD

S.H. 152 EB

I-35 OFF-RAMP SB

S.H. 66

I-40 WB RAMP N-W

I-40 EB

E RENO AVE

NW 12TH ST.

N.W. 178TH ST.

I-44 RAMP TO 63rd

I-40 W.B.

I-40 E.B.

SE 29TH ST

S.H. 66 EB

E1000 (BRITTON RD)

I-40

S.H. 66

WINDSOR DR.

N3120 (SUNNYLANE)

I-40 WB

NE 150TH ST

MARTIN PARK CROSS

KICKAPOO TP

KICKAPOO TP

NE 36TH ST

S.H. 66 WB

N INDIAN MERIDIAN

I-240

I-240

E1044

I-35 SB TO I-40 EB

U.S. 77 SB

U.S. 77 NB

E0960 (NE 150)

S.H. 152 WB

SE 44TH ST

SE 15TH ST

U.S. 62

U.S. 62

U.S. 77 SB

U.S. 77 NB

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