Okanogan County, WA

163 public highway bridges

Okanogan County Bridge Snapshot

Okanogan County, Washington contains 163 public highway bridges in the FHWA National Bridge Inventory. Roughly 46% are rated “Good,” 44.8% “Fair,” 7.4% “Poor,” and 7.4% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in WA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

163
Total Bridges
46%
Good
7.4%
Poor
7.4%
Structurally Deficient

Condition Distribution

Good
46% (75)
Fair
44.8% (73)
Poor
7.4% (12)
SD
7.4% (12)

All Bridges (163)

US 97

Good

Over: BONAPARTE CR

22.4 N JCT SR 215, Okanogan, WA

Built 1957 Load: 24.5 t ADT: 5,549

COUNTY ROAD 4719

Good

Over: NINE MILE CREEK

1.75 NO.JCT.9480, Okanogan, WA

Built 1980 Load: 24.9 t ADT: 352

ORTELL ROAD

Good

Over: EIGHTMILE CREEK

NO DATA ENTERED, Okanogan, WA

Built 1955 Load: 25.4 t ADT: 25

FALLS CREEK ROAD

Good

Over: FALLS CREEK

NO DATA ENTERED, Okanogan, WA

Built 1950 Load: 25.4 t ADT: 25

NO DATA ENTERED

Good

Over: WAR CREEK

NO DATA ENTERED, Okanogan, WA

Built 2005 Load: 26.2 t ADT: 50

SALMON MEADOWS RD

Good

Over: N. FK SALMON CREEK

NO DATA ENTERED, Okanogan, WA

Built 1949 Load: 26.3 t ADT: 76

REYNOLDS RD

Good

Over: TWISP RIVER

NO DATA ENTERED, Okanogan, WA

Built 1961 Load: 26.3 t ADT: 21

Conconogan Road

Good

Over: West Fork Salmon Creek

Conconully Reservoir, Okanogan, WA

Built 2018 Load: 26.6 t ADT: 30

COUNTY ROAD 1089

Good

Over: TWISP RIVER

6.9 W.SR20 @ TWISP, Okanogan, WA

Built 1960 Load: 26.6 t ADT: 65

SR 20

Good

Over: RAILROAD

0.3 E JCT SR 215, Okanogan, WA

Built 1959 Load: 27.2 t ADT: 2,393

CUB/GOAT CR RD

Good

Over: GOAT CREEK

NO DATA ENTERED, Okanogan, WA

Built 1957 Load: 27.2 t ADT: 63

COUNTY ROAD 1075

Good

Over: TWISP RIVER

4.1 W.SR20 @ TWISP, Okanogan, WA

Built 1974 Load: 27.5 t ADT: 21

CHEWUCK ROAD

Good

Over: FALLS CREEK

NO DATA ENTERED, Okanogan, WA

Built 1949 Load: 27.8 t ADT: 196

RAY ROAD

Good

Over: N. FK SALMON CR

NO DATA ENTERED, Okanogan, WA

Built 1965 Load: 28.1 t ADT: 53

OCR 3358

Good

Over: OMAK CREEK

0.43 NE.JCT.SR155, Okanogan, WA

Built 1973 Load: 28.5 t ADT: 463

KNOX ROAD, 3817

Good

Over: TUNK CREEK

2.7 MI.W.SYNAREP, Okanogan, WA

Built 1976 Load: 29.5 t ADT: 22

BUMBLEBEE RD

Good

Over: GOLD CREEK

NO DATA ENTERED, Okanogan, WA

Built 1967 Load: 30.9 t ADT: 30

COUNTY ROAD 1637

Good

Over: BEAVER CREEK

5.4 MI.N.JCT.SR20, Okanogan, WA

Built 1962 Load: 31.4 t ADT: 35

PELICAN CREEK RD

Good

Over: NORTH FORK SALMON CR

6.1 MILES N OF CONCUNULLY, Okanogan, WA

Built 1964 Load: 31.8 t ADT: 2

NO DATA ENTERED

Good

Over: EAST FORK BUTTERMILK

NO DATA ENTERED, Okanogan, WA

Built 2001 Load: 32.4 t ADT: 10

HATCHERY ENTRANCE

Good

Over: FOGHORN IRRIGATION CANAL

453 TWIN LAKES ROAD, Okanogan, WA

Built 2012 Load: 32.7 t ADT: 60

US 97

Good

Over: SIWASH CREEK

0.6 N JCT SR 20, Okanogan, WA

Built 1948 Load: 32.7 t ADT: 4,117

TWISP RIVER ROAD

Good

Over: LITTLE BRIDGE CREEK

8.07 Mi West of Twisp, Okanogan, WA

Built 2008 Load: 32.7 t ADT: 321

NO DATA ENTERED

Good

Over: CUB CREEK

NO DATA ENTERED, Okanogan, WA

Built 2009 Load: 33.4 t ADT: 50

BUFFALO LAKE RD

Good

Over: LITTLE NESPELEM RIVER

1.2 MI SE IND. AGCY, Okanogan, WA

Built 2014 Load: 33.4 t ADT: 244

KLIPCHUCK ROAD

Good

Over: EARLY WINTER CREEK

ROAD TO KLIPCHUCK CG, Okanogan, WA

Built 1972 Load: 34.5 t ADT: 15

SR 20

Good

Over: BONAPARTE CREEK

7.7 E JCT US 97, Okanogan, WA

Built 2001 Load: 38.2 t ADT: 1,377

Salmon Creek Rd

Good

Over: Salmon Creek

2.24 MILES N. OF SR 215, Okanogan, WA

Built 2020 Load: 39.5 t ADT: 292

SR 20

Good

Over: H W CHANNEL METHOW R

38.4 E CHELAN CO, Okanogan, WA

Built 1946 Load: 39.9 t ADT: 4,843

SR 215

Good

Over: SALMON CR

0.6 N JCT SR 20, Okanogan, WA

Built 1950 Load: 39.9 t ADT: 5,130

NO DATA ENTERED

Good

Over: S. FORK GOLD CREEK

NO DATA ENTERED, Okanogan, WA

Built 2006 Load: 40.5 t ADT: 30

FAS ROUTE W240

Good

Over: SIMILKAMEEN RIVER

.SENW S13,T40,R25, Okanogan, WA

Built 1973 Load: 42.1 t ADT: 122

Salmon Creek Rd

Good

Over: Salmon Creek

3 miles NW of Okanogan, Okanogan, WA

Built 2022 Load: 42.8 t ADT: 430

SR 20

Good

Over: TWISP R

38.8 E CHELAN CO, Okanogan, WA

Built 2000 Load: 44.4 t ADT: 4,423

OCR 3683

Good

Over: NESPELEM RIVER

5.13 NO. JCT. SR 155, Okanogan, WA

Built 2017 Load: 46.0 t ADT: 51

OCR 3683

Good

Over: NESPELEM RIVER

5.1 mi N. SR 155, Okanogan, WA

Built 2022 Load: 46.3 t ADT: 51

SINLAHEKIN RD

Good

Over: BLUE LAKE OUTLET

9.5 MI S. OF LOOMIS, Okanogan, WA

Built 2018 Load: 46.7 t ADT: 36

SR 20

Good

Over: BEAVER CREEK

1.8 E JCT SR 153, Okanogan, WA

Built 2006 Load: 47.2 t ADT: 1,342

OCR 3586

Good

Over: LITTLE NESPELEM RIVER

2.4 E. INDIAN AGCY., Okanogan, WA

Built 2017 Load: 51.8 t ADT: 42

OAK STREET

Good

Over: OKANOGAN RIVER

0.09 SW SR 215, Okanogan, WA

Built 2003 Load: 53.8 t ADT: 4,100

SR 153

Good

Over: BEAVER CREEK

29.3 N JCT US 97, Okanogan, WA

Built 2001 Load: 54.1 t ADT: 2,077

COUNTY ROAD 2045

Good

Over: LOUP LOUP CREEK

3.98 MI N JCT SR20, Okanogan, WA

Built 2014 Load: 57.7 t ADT: 20

SR 20

Good

Over: METHOW RIVER

39.6 E CHELAN CO, Okanogan, WA

Built 2002 Load: 61.7 t ADT: 4,614

SR 20

Good

Over: EARLY WINTERS CREEK

13.4 E CHELAN CO, Okanogan, WA

Built 1968 Load: 62.6 t ADT: 1,372

SR 20

Good

Over: BONAPARTE CR

4.6 E JCT US 97, Okanogan, WA

Built 2000 Load: 67.1 t ADT: 1,780

US 97

Good

Over: GN RR-COUNTY ROAD

4.1 N JCT SR 20, Okanogan, WA

Built 1964 Load: 68.0 t ADT: 7,166

Greenacres Rd

Good

Over: Johnson Creek

4 miles west of Riverside, Okanogan, WA

Built 2023 Load: 71.3 t ADT: 265

SR 20

Good

Over: LITTLE BOULDER CREEK

18.8 E CHELAN CO, Okanogan, WA

Built 2005 Load: 89.8 t ADT: 1,372

US 97

Good

Over: DAN CREEK

3.9 N JCT SR 17, Okanogan, WA

Built 1900 Load: 96.9 t ADT: 3,398

COLUMBIA RIVER RD

Good

Over: OMAK CREEK

0.77 mi S. Jct. SR155, Okanogan, WA

Built 2006 Load: 96.9 t ADT: 553

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

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial