Total bridges
160
Public highway bridges in Delaware County
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.
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
- 1920s 3
1920–1929
3 bridges
- 1930s
1930–1939
33 bridges
- 1940s 9
1940–1949
9 bridges
- 1950s 13
1950–1959
13 bridges
- 1960s 13
1960–1969
13 bridges
- 1970s 4
1970–1979
4 bridges
- 1980s 12
1980–1989
12 bridges
- 1990s
1990–1999
37 bridges
- 2000s 14
2000–2009
14 bridges
- 2010s
2010–2019
17 bridges
- 2020s 5
2020–2029
5 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).
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.
| County | Bridges | Good | Fair | Poor | Avg. built |
|---|---|---|---|---|---|
| Woodward County | 168 | 36.3% | 59.5% | 4.2% | 1980 |
| Delaware County (this page) | 160 | 34.4% | 47.5% | 18.1% | 1975 |
| Haskell County | 155 | 36.8% | 56.8% | 6.5% | 1972 |
| Johnston County | 154 | 40.3% | 55.8% | 3.9% | 1976 |
| Roger Mills County | 153 | 92.2% | 7.8% | 0% | 1982 |
| Ellis County | 152 | 40.1% | 59.9% | 0% | 1975 |
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).
- Clay County, KY · 160 bridges
- Kittson County, MN · 160 bridges
- Rio Arriba County, NM · 160 bridges
- Warren County, TN · 160 bridges
Similar average build year
Nearest mean year-built outside OK (1975 here).
- San Bernardino County, CA · avg 1975 · 1,422 bridges
- Lane County, OR · avg 1975 · 1,010 bridges
- Fulton County, GA · avg 1975 · 775 bridges
- Westmoreland County, PA · avg 1975 · 620 bridges
Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.
All bridges (160)
IRR E0450
FairOver: BEATY CREEK
6SE OF JAY, Delaware, OK
Built 1976 Load: 0.0 t ADT: 100
D0567
FairOver: CREEK
1NW OF FLINT, Delaware, OK
Built 2003 Load: 9.7 t ADT: 50
N4622
FairOver: SPRING BRANCH CREEK
MAIN ST. 0.1 N.US59, Delaware, OK
Built 1930 Load: 11.8 t ADT: 450
E0563
FairOver: SAGER CREEK
2.0 MI NW SILOAM SPRINGS, Delaware, OK
Built 1955 Load: 15.0 t ADT: 100
E0580
FairOver: SPRING CREEK
2.0 MI SE TWIN OAKS, Delaware, OK
Built 1953 Load: 15.1 t ADT: 100
N4670 (FAS 2133)
FairOver: SPAVINAW CREEK
4N OF COLCORD, Delaware, OK
Built 1948 Load: 15.6 t ADT: 400
U.S. 59
FairOver: SPAVINAW CREEK
12.7 MI N SH33, Delaware, OK
Built 1952 Load: 18.1 t ADT: 2,600
N4592
FairOver: HICKORY CREEK
1.5N OF SAILBOAT BR., Delaware, OK
Built 1939 Load: 18.8 t ADT: 420
E0558
FairOver: SPRING CREEK
IN KANSAS; OKLA., Delaware, OK
Built 1945 Load: 19.0 t ADT: 100
E0270
FairOver: FLY CREEK
2W 1N OF BERNICE, Delaware, OK
Built 1939 Load: 19.1 t ADT: 100
N4610
FairOver: CREEK
IN KANSAS; OKLA., Delaware, OK
Built 1939 Load: 19.2 t ADT: 100
N4650
FairOver: CREEK
3.8NW OF SH 10&25 JCT, Delaware, OK
Built 1939 Load: 19.6 t ADT: 100
E0290
FairOver: DUCK CREEK
4W 1S OF BERNICE, Delaware, OK
Built 1939 Load: 19.6 t ADT: 100
E0310
FairOver: DUCK CREEK
1.5W .5S OF CLEORA, Delaware, OK
Built 1939 Load: 19.7 t ADT: 200
N4660 (FAS 2133)
FairOver: BEATY CREEK
7.5SE OF JAY, Delaware, OK
Built 1948 Load: 20.0 t ADT: 100
E0240 (2102C)
FairOver: CREEK
1.1E OF S.H. 10, Delaware, OK
Built 1966 Load: 20.7 t ADT: 960
N4650 (2120C)
FairOver: CREEK
3.5SE OF GROVE, Delaware, OK
Built 1938 Load: 22.3 t ADT: 50
E0240 (2102C)
FairOver: CREEK
1.2E OF S.H. 10, Delaware, OK
Built 1966 Load: 23.6 t ADT: 960
D0510
FairOver: CREEK
3.5 MI NE OF COLCORD, Delaware, OK
Built 1960 Load: 23.9 t ADT: 100
D0512
FairOver: CREEK
3.0 MI NE OF COLCORD, Delaware, OK
Built 1960 Load: 23.9 t ADT: 100
2132C
FairOver: CREEK
5.5 M SW OF JAY, Delaware, OK
Built 1939 Load: 24.5 t ADT: 100
S.H. 20
FairOver: SUMMERFIELD CREEK
4.8 MI E MAYES CO, Delaware, OK
Built 1934 Load: 25.0 t ADT: 2,000
S.H. 10
FairOver: CREEK
6.1 MI E US59, Delaware, OK
Built 1946 Load: 25.1 t ADT: 4,100
N4608
FairOver: CREEK
2.0 MI S OF JAY, Delaware, OK
Built 1936 Load: 25.2 t ADT: 100
N4550
FairOver: CREEK
3.5 MI NW TWIN OAKS, Delaware, OK
Built 1939 Load: 25.8 t ADT: 100
S.H. 10
FairOver: CREEK
3.4 MI E US59, Delaware, OK
Built 1946 Load: 25.9 t ADT: 5,600
U.S. 59 SB
FairOver: GRAND LAKE/SAILBOAT
19.1 MI N SH20, Delaware, OK
Built 1938 Load: 26.1 t ADT: 5,200
E0240 (2102C)
FairOver: CREEK
2.9E OF S.H. 10, Delaware, OK
Built 1966 Load: 26.1 t ADT: 960
U.S. 59 NB
FairOver: GRAND LAKE/SAILBOAT
19.1 MI N SH20, Delaware, OK
Built 2000 Load: 26.1 t ADT: 5,150
S.H. 10
FairOver: CREEK
0.1 MI E US59, Delaware, OK
Built 1946 Load: 26.2 t ADT: 11,300
S.H. 25
FairOver: CREEK
3.8 MI E SH10, Delaware, OK
Built 1946 Load: 26.2 t ADT: 3,000
E0240 (2102C)
FairOver: CREEK
2.0E OF S.H. 10, Delaware, OK
Built 1966 Load: 27.2 t ADT: 960
N4570
FairOver: SALINE CREEK
3.5NW OF TWIN OAKS, Delaware, OK
Built 2004 Load: 27.5 t ADT: 100
D4610
FairOver: CREEK
8.0 MI NW KANSAS, Delaware, OK
Built 1939 Load: 28.2 t ADT: 100
D0512
FairOver: CREEK
2.6 MI NE OF COLCORD, Delaware, OK
Built 1960 Load: 28.4 t ADT: 100
2152C
FairOver: FLINT CREEK
2.0 MI NW MOSELEY, Delaware, OK
Built 1958 Load: 28.9 t ADT: 100
N4660
FairOver: BRUSH CREEK
4.5NE OF JAY, Delaware, OK
Built 1969 Load: 30.4 t ADT: 100
E0496
FairOver: BULL HOLLOW CREEK
7.0 MI NW OF TWIN OAKS, Delaware, OK
Built 1986 Load: 31.3 t ADT: 100
IRR N4601 (2134C)
FairOver: BRUSH CREEK; LAKE EUCHA
5.0 MI S OF JAY, Delaware, OK
Built 1991 Load: 31.4 t ADT: 100
E0240 (2102C)
FairOver: CREEK
1.2W OF TIFF CITY MO., Delaware, OK
Built 1966 Load: 31.7 t ADT: 960
U.S. 412 ALT.
FairOver: CHEROKEE TP UNDER
1.75 MI E OF C/L, Delaware, OK
Built 1991 Load: 31.8 t ADT: 2,400
N4640
FairOver: WOLF CREEK
1.5N OF GROVE, Delaware, OK
Built 1998 Load: 32.2 t ADT: 150
E0240 (2102C)
FairOver: CREEK
.9W OF TIFF CITY MO., Delaware, OK
Built 1960 Load: 32.4 t ADT: 960
U.S. 59
FairOver: ELM BRANCH CREEK
13.4 MI N SH20, Delaware, OK
Built 1925 Load: 32.7 t ADT: 7,300
S.H. 20
FairOver: CREEK
2.8 MI E US59, Delaware, OK
Built 1936 Load: 32.7 t ADT: 2,300
S.H. 25
FairOver: CREEK
0.5 MI E SH10, Delaware, OK
Built 1950 Load: 32.7 t ADT: 3,000
U.S. 412 ALT.
FairOver: SALINE CREEK
5.4 MI E MAYES CO., Delaware, OK
Built 1953 Load: 32.7 t ADT: 2,600
U.S. 412 ALT.
FairOver: SPRING CREEK
1.5 MI W US59, Delaware, OK
Built 1953 Load: 32.7 t ADT: 3,100
U.S. 59 / S.H. 10
FairOver: CHEROKEE TP UNDER
0.70 MI N OF US 412/59 IN, Delaware, OK
Built 1991 Load: 32.7 t ADT: 3,300
N4660
FairOver: HONEY CREEK
6SE OF GROVE, Delaware, OK
Built 1989 Load: 32.9 t ADT: 100
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.