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)

COUNTY ROAD 9221

Fair

Over: SALMON CREEK

NWNWS31T34NR26E, Okanogan, WA

Built 1949 Load: 27.9 t ADT: 430

EIGHTMILE ROAD

Fair

Over: EIGHTMILE CREEK

NO DATA ENTERED, Okanogan, WA

Built 1955 Load: 28.1 t ADT: 40

FAS ROUTE Z240

Fair

Over: OKANOGAN RIVER

.SWNWS27T40NR27E, Okanogan, WA

Built 1971 Load: 28.2 t ADT: 1,527

FAS ROUTE L242

Fair

Over: GOAT CREEK

1.5 MI SE MAZAMA, Okanogan, WA

Built 1971 Load: 29.5 t ADT: 338

US 97

Fair

Over: OKANOGAN RIVER

3.6 N JCT SR 173, Okanogan, WA

Built 1950 Load: 29.9 t ADT: 4,687

DUGOUT MTN RD

Fair

Over: LOST CREEK

NO DATA ENTERED, Okanogan, WA

Built 1981 Load: 30.2 t ADT: 25

COUNTY ROAD 4087

Fair

Over: PALMER CREEK

03.5 MI.S.NIGHTHAWK, Okanogan, WA

Built 1980 Load: 31.8 t ADT: 33

Cecil Creek Rd

Fair

Over: Sinlahekin Creek

2 miles south of Loomis, Okanogan, WA

Built 1975 Load: 32.7 t ADT: 20

Monse Bridge Rd

Fair

Over: OKANOGAN RIVER

.NWSES34T31NR25E, Okanogan, WA

Built 1967 Load: 33.4 t ADT: 479

BUTTERMILK BUTTE

Fair

Over: EAST FORK BUTTERMILK CR

NO DATA ENTERED, Okanogan, WA

Built 1992 Load: 34.0 t ADT: 15

COUNTY ROAD 9455

Fair

Over: LOST CREEK

17.4 MI.SE JCT.SH30, Okanogan, WA

Built 1958 Load: 35.4 t ADT: 52

SR 155

Fair

Over: OMAK CR

50.5 N DOUGLAS CO, Okanogan, WA

Built 1967 Load: 35.6 t ADT: 2,325

FAS ROUTE P240

Fair

Over: OKANOGAN RIVER

SENWS16T37NR27E, Okanogan, WA

Built 1999 Load: 36.0 t ADT: 2,816

MILL STREET

Fair

Over: SALMON CREEK

.31 MI WEST OF SR215, Okanogan, WA

Built 2006 Load: 36.6 t ADT: 450

COUNTY ROAD 1090

Fair

Over: BUTTER MILK CREEK

11.1 W.SR20 @ TWISP, Okanogan, WA

Built 1960 Load: 37.2 t ADT: 74

US 97

Fair

Over: METHOW RIVER

0.1 N JCT SR 153, Okanogan, WA

Built 1966 Load: 37.3 t ADT: 5,569

FAS ROUTE K241

Fair

Over: CHEWUCH RIVER

.SENWS2T35NR21E, Okanogan, WA

Built 1953 Load: 39.2 t ADT: 173

NO DATA ENTERED

Fair

Over: ANDREWS CREEK

NO DATA ENTERED, Okanogan, WA

Built 2006 Load: 40.8 t ADT: 50

IRR BIA RTE 66

Fair

Over: LOONEY CREEK

N.W. END OF BIA RT. 66, Okanogan, WA

Built 2001 Load: 42.9 t ADT: 50

TUNK VALLEY RD

Fair

Over: OKANOGAN RIVER

0.32 M E US 97, Okanogan, WA

Built 1969 Load: 43.5 t ADT: 650

BLACK CANYON ROAD

Fair

Over: BLACK CANYON CREEK

NO DATA ENTERED, Okanogan, WA

Built 1965 Load: 44.2 t ADT: 50

SR 213

Fair

Over: OKANOGAN RIVER

0.2 N JCT US 97, Okanogan, WA

Built 1962 Load: 45.4 t ADT: 678

COUNTY ROAD 1131

Fair

Over: WOLF CREEK

3.2 W.SR20 @ WNTHP, Okanogan, WA

Built 1963 Load: 45.4 t ADT: 2,423

IRR ROUTE 116

Fair

Over: STEPSTONE CREEK

13 KM NORTH OF NESPELEM, Okanogan, WA

Built 1998 Load: 50.7 t ADT: 50

US 97

Fair

Over: OKANOGAN RIVER

0.7 N JCT SR 155, Okanogan, WA

Built 1964 Load: 52.6 t ADT: 8,488

SR 20

Fair

Over: OKANOGAN RIVER

0.2 E JCT SR 215, Okanogan, WA

Built 1959 Load: 55.3 t ADT: 2,393

NO DATA ENTERED

Good

Over: UPPER S FK GOLD CREEK

NO DATA ENTERED, Okanogan, WA

Built 2009 ADT: 10

E. SIDE CHEWUCH

Good

Over: CHEWUCH RIVER

NO DATA ENTERED, Okanogan, WA

Built 1950 ADT: 24

NO DATA ENTERED

Good

Over: LITTLE BRIDGE CREEK

NO DATA ENTERED, Okanogan, WA

Built 2001 ADT: 10

4415030

Good

Over: LITTLE BRIDGE CREEK

NO DATA ENTERED, Okanogan, WA

Built 2001 ADT: 10

NO DATA ENTERED

Good

Over: BEN CREEK OVER LIBBY CRE

NO DATA ENTERED, Okanogan, WA

Built 2004 ADT: 5

NO DATA ENTERED

Good

Over: LOWER LIBBY CREEK

NO DATA ENTERED, Okanogan, WA

Built 2004 ADT: 50

NO DATA ENTERED

Good

Over: RAINY CREEK

NO DATA ENTERED, Okanogan, WA

Built 2006 ADT: 30

FSR 5400700

Good

Over: SLATE CREEK

NO DATA ENTERED, Okanogan, WA

Built 2009 ADT: 5

NO DATA ENTERED

Good

Over: REYNOLDS CREEK

NO DATA ENTERED, Okanogan, WA

Built 2008 ADT: 35

NO DATA ENTERED

Good

Over: MIDDLE FORK TOATS COULEE

NO DATA ENTERED, Okanogan, WA

Built 2011 ADT: 75

SR 20

Good

Over: EARLY WINTERS CREEK

8.0 E CHELAN CO, Okanogan, WA

Built 1968 Load: 12.0 t ADT: 1,372

SR 20

Good

Over: CUTTHROAT CREEK

4.5 E CHELAN CO, Okanogan, WA

Built 1968 Load: 15.6 t ADT: 1,159

KENDELL STREET

Good

Over: JOHNSON CREEK

0.3 NE US97 @RIVSD, Okanogan, WA

Built 1976 Load: 17.2 t ADT: 521

CHEWUCK ROAD

Good

Over: EIGHTMILE CREEK

NO DATA ENTERED, Okanogan, WA

Built 1949 Load: 17.3 t ADT: 196

SR 20

Good

Over: H W CHANNEL METHOW R

37.7 E CHELAN CO, Okanogan, WA

Built 1945 Load: 18.8 t ADT: 4,843

OCR 3735

Good

Over: OMAK CREEK

0.29 NE.JCT.SR155, Okanogan, WA

Built 1968 Load: 18.8 t ADT: 1,339

EIGHTMILE ROAD

Good

Over: EIGHTMILE CREEK

NO DATA ENTERED, Okanogan, WA

Built 1949 Load: 20.4 t ADT: 97

COUNTY ROAD 1535

Good

Over: METHOW RIVER

0.1 MI.E. JCT SR153, Okanogan, WA

Built 1990 Load: 20.4 t ADT: 27

W. TWISP RIVER RD

Good

Over: TWISP RIVER

NO DATA ENTERED, Okanogan, WA

Built 1958 Load: 20.9 t ADT: 30

ED FIGLINSKI RD

Good

Over: TUNK CREEK

1.1 MI.W.SYNAREP, Okanogan, WA

Built 1976 Load: 21.7 t ADT: 5

S. FK. GOLD CR

Good

Over: GOLD CREEK

NO DATA ENTERED, Okanogan, WA

Built 1949 Load: 21.8 t ADT: 60

MEADOWS/TOATS RD

Good

Over: TOATS COULEE CREEK

NO DATA ENTERED, Okanogan, WA

Built 1949 Load: 22.7 t ADT: 153

MEADOWS/TOATS RD

Good

Over: TOATS COULEE CREEK

NO DATA ENTERED, Okanogan, WA

Built 1949 Load: 23.6 t ADT: 153

COUNTY ROAD 1029

Good

Over: GOLD CREEK

0.61 N.JCT.SR153, Okanogan, WA

Built 1972 Load: 23.7 t ADT: 90

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