County profile · official public datasets

Delaware County, OK

160 public highway bridges tracked in the FHWA National Bridge Inventory: 34.4% rated Good, 47.5% Fair, 18.1% Poor.

160
Public bridges
34.4%
Good condition
18.1%
Poor condition

The verdict

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

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

71st
of 77 on Poor share
18.1%
Poor-condition share
160
public highway bridges
1975
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.

Delaware County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Delaware County ranks #71 of 77 Oklahoma counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 18.1%). Delaware County, Oklahoma contains 160 public highway bridges. Roughly 34.4% are rated “Good,” 47.5% “Fair,” and 18.1% “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

160

Public highway bridges in Delaware County

Good condition

34.4%

55 of 160 rated 7-9

Fair condition

47.5%

76 of 160 rated 5-6

Poor condition

18.1%

29 of 160 rated 4 or below

In-state Poor-share rank

#71 of 77

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

Condition distribution

Share of 160 NBI-tracked bridges by lowest applicable component rating.

Good
34.4% (55)
Fair
47.5% (76)
Poor
18.1% (29)

Delaware County's Poor-condition bridges carry 5,922 vehicle crossings a day

That is 2.3% of the county's reported daily bridge traffic on 18.1% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 204 crossings a day against 2,571 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 160 of 160 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

45% of Delaware County's bridges have passed the 50-year mark

72 of the 160 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 34.4% 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 28.1% of the county's Poor-condition bridge traffic

E0250 over GRAND LAKE-HICKORY CREEK, built 1940, carries 1,664 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 29-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 5,922 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Delaware County's bridges were built

160 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1990s, when 37 of the county's bridges still in the inventory were built, which is 23.1% of those with a recorded year. That cohort is now 25 to 34 years old in the 2024 inventory. Its average build year (1975) matches the Oklahoma average (1977).

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

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

The 5 Oklahoma counties nearest Delaware County in number of bridges, with their condition splits. Its 18.1% Poor share is the 6th-lowest of these 6. Its average build year of 1975 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 Delaware County and the 5 Oklahoma counties closest to it in inventory size
County Bridges Poor
Woodward County 168 4.2%
Delaware County (this page) 160 18.1%
Haskell County 155 6.5%
Johnston County 154 3.9%
Roger Mills County 153 0%
Ellis County 152 0%

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

Similar inventory size

Nearest county inventories outside OK (160 bridges here).

Similar average build year

Nearest mean year-built outside OK (1975 here).

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 160 Good 55 Fair 76 Poor 29

Good-condition bridges (55)

U.S. 59

Good

Over: CREEK

2.5 MI E. SH10, Delaware, OK

Built 1938 Load: 19.6 t ADT: 3,900

U.S. 59

Good

Over: CREEK

1.8 MI E. SH10, Delaware, OK

Built 1938 Load: 19.6 t ADT: 3,900

N4625 (SUMAC ST)

Good

Over: ELM CREEK

SUMAC ST. S OF 18TH ST., Delaware, OK

Built 1995 Load: 19.6 t ADT: 500

CHEROKEE TP

Good

Over: CO. RD. N4520 UNDER

3.00 MI E OF C/L, Delaware, OK

Built 1991 Load: 19.7 t ADT: 3,050

CHEROKEE TP WB RMP

Good

Over: U.S. 59 / U.S. 412A UND

17.35 MI E OF C/L, Delaware, OK

Built 1991 Load: 22.9 t ADT: 1,000

CO. RD. N4550

Good

Over: CHEROKEE TP UNDER

6.02 MI E OF C/L, Delaware, OK

Built 1991 Load: 24.7 t ADT: 5,000

CO. RD. N4540

Good

Over: CHEROKEE TP UNDER

5.01 MI E OF C/L, Delaware, OK

Built 1991 Load: 25.6 t ADT: 5,000

CO. RD. N4560

Good

Over: CHEROKEE TP UNDER

7.03 MI E OF C/L, Delaware, OK

Built 1991 Load: 27.0 t ADT: 5,000

N4710 (2148C)

Good

Over: CHEROKEE CREEK

.9N OF HWY 116, Delaware, OK

Built 2011 Load: 29.5 t ADT: 100

S.H. 20

Good

Over: BRUSH CREEK

1.4 MI E US59, Delaware, OK

Built 1981 Load: 30.8 t ADT: 2,300

2142C

Good

Over: CREEK

1.2 MI E OF KENWOOD, Delaware, OK

Built 1938 Load: 31.0 t ADT: 384

CHEROKEE TP

Good

Over: FIVE MILE HOLLOW RD UND

16.49 MI E OF C/L, Delaware, OK

Built 1991 Load: 31.0 t ADT: 3,450

CHEROKEE TP

Good

Over: CO. RD. N4520 UNDER

3.00 MI E OF C/L, Delaware, OK

Built 1991 Load: 32.0 t ADT: 3,300

E0370

Good

Over: WOOD SPRINGS

.5S 1.7W OF ZENA, Delaware, OK

Built 2008 Load: 32.2 t ADT: 100

U.S. 412 ALT.

Good

Over: SALINE CREEK

5.1 MI E MAYES CO, Delaware, OK

Built 1953 Load: 32.7 t ADT: 2,600

CHEROKEE TP

Good

Over: CREEK

8.14 MI E OF C/L, Delaware, OK

Built 1991 Load: 32.7 t ADT: 6,100

CHEROKEE TP

Good

Over: CREEK

16.60 MI E OF C/L, Delaware, OK

Built 1991 Load: 32.7 t ADT: 6,300

CHEROKEE TP

Good

Over: CREEK

14.84 MI E OF C/L, Delaware, OK

Built 1991 Load: 32.7 t ADT: 6,300

CHEROKEE TP

Good

Over: CREEK

12.35 MI E OF C/L, Delaware, OK

Built 1991 Load: 32.7 t ADT: 6,100

E0485

Good

Over: CREEK

2.5 E OF KENWOOD, Delaware, OK

Built 2023 Load: 32.7 t ADT: 384

S.H. 127

Good

Over: DROWNING CREEK

5.2 MI. N.&W. OF U.S. 59, Delaware, OK

Built 2008 Load: 33.6 t ADT: 430

CO. RD. N4530

Good

Over: CHEROKEE TP UNDER

4.00 MI E OF C/L, Delaware, OK

Built 1991 Load: 34.2 t ADT: 5,000

CO. RD. N4570

Good

Over: CHEROKEE TP UNDER

8.01 MI E OF C/L, Delaware, OK

Built 1991 Load: 34.4 t ADT: 5,000

CO. RD. N4580

Good

Over: CHEROKEE TP UNDER

9.04 MI E OF C/L, Delaware, OK

Built 1991 Load: 34.4 t ADT: 5,000

CO. RD. N4600

Good

Over: CHEROKEE TP UNDER

11.09 MI E OF C/L, Delaware, OK

Built 1991 Load: 34.4 t ADT: 5,000

CO. RD. N4590

Good

Over: CHEROKEE TP UNDER

10.04 MI E OF C/L, Delaware, OK

Built 1991 Load: 34.4 t ADT: 5,000

IRR FAS 2131

Good

Over: SALINE CREEK

0.1 MI N OF US 412, Delaware, OK

Built 1987 Load: 34.7 t ADT: 100

N4620 (BROADWAY)

Good

Over: ELM CREEK

BROADWAY .2 MI.N OF 18TH, Delaware, OK

Built 1995 Load: 34.9 t ADT: 2,000

IRR E0485 KENWOOD

Good

Over: SALINE CREEK

1.5E OF KENWOOD, Delaware, OK

Built 2015 Load: 36.2 t ADT: 384

IRR E0485 KENWOOD

Good

Over: SALINE CREEK

4.5E OF KENWOOD, Delaware, OK

Built 2015 Load: 36.2 t ADT: 384

CHEROKEE TP

Good

Over: FIVE MILE HOLLOW CREEK

17.22 MI E OF C/L, Delaware, OK

Built 1991 Load: 36.6 t ADT: 3,150

CHEROKEE TP

Good

Over: FIVE MILE HOLLOW RD UND

16.49 MI E OF C/L, Delaware, OK

Built 1991 Load: 37.2 t ADT: 3,150

S.H. 85

Good

Over: DUCK CREEK

3.2 NE OF CRAIG C/L, Delaware, OK

Built 2020 Load: 37.2 t ADT: 2,274

E0550

Good

Over: CRAZY CREEK

4E 3S OF COLCORD, Delaware, OK

Built 2022 Load: 37.2 t ADT: 100

OLD HWY 33

Good

Over: DRIPPING SPRINGS CREEK

5.5 MI W SILOAM SPRING, Delaware, OK

Built 1975 Load: 37.3 t ADT: 100

E0519

Good

Over: CRAZY CREEK

5E of COLCORD, Delaware, OK

Built 2021 Load: 37.7 t ADT: 100

S.H. 412

Good

Over: SPRING CREEK

.6N OF CHEROKEE CO., Delaware, OK

Built 2003 Load: 38.1 t ADT: 1,700

D0457

Good

Over: SALINE CREEK

8NW OF TWIN OAKS, Delaware, OK

Built 2009 Load: 38.2 t ADT: 100

S.H. 20 SD

Good

Over: CREEK

20 N OF SH 20, Delaware, OK

Built 1955 Load: 38.4 t ADT: 24

N4528

Good

Over: FLY CREEK

1.8N OF HWY 85-A @BERNICE, Delaware, OK

Built 1994 Load: 38.6 t ADT: 250

CO. RD. N4610

Good

Over: CHEROKEE TP UNDER

12.15 MI E OF C/L, Delaware, OK

Built 1991 Load: 38.9 t ADT: 5,000

CHEROKEE TP

Good

Over: FIVE MILE HOLLOW CREEK

17.22 MI E OF C/L, Delaware, OK

Built 1991 Load: 39.2 t ADT: 3,150

E0270

Good

Over: CREEK

2.5NE OF S.H. 10, Delaware, OK

Built 2008 Load: 39.7 t ADT: 100

CO. RD. N4500

Good

Over: CHEROKEE TP UNDER

0.99 MI E OF C/L, Delaware, OK

Built 1991 Load: 42.4 t ADT: 5,000

CHEROKEE TP

Good

Over: SALINE CREEK

5.92 MI E OF C/L, Delaware, OK

Built 1991 Load: 42.6 t ADT: 3,300

S.H. 10

Good

Over: ELK RIVER

1.35S OF OTTAWA C/L, Delaware, OK

Built 2014 Load: 42.6 t ADT: 4,100

CHEROKEE TP

Good

Over: SALINE CREEK

5.92 MI E OF C/L, Delaware, OK

Built 1991 Load: 42.7 t ADT: 3,050

N4620 (2108C)

Good

Over: CREEK

2N of GROVE, Delaware, OK

Built 2018 Load: 43.5 t ADT: 8,240

S.H. 116

Good

Over: CLOUD CREEK

2.8 MI E US59, Delaware, OK

Built 1981 Load: 45.4 t ADT: 990

E0303 (18TH ST.)

Good

Over: ELM CREEK

18TH ST. 20 MI.E HY 59, Delaware, OK

Built 1995 Load: 46.2 t ADT: 500

Read our methodology - how this data is sourced, computed, and verified.

Related

Browse all → | Rankings →
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.