Okanogan County, WA

163 public highway bridges

Okanogan County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Okanogan County, Washington contains 163 public highway bridges. Roughly 46% are rated “Good,” 44.8% “Fair,” and 7.4% “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.

163
Total Bridges
46%
Good
44.8%
Fair
7.4%
Poor Condition

Condition Distribution

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

All Bridges (163)

GN RY

Unknown

Over: US 97

6.1 N JCT SR 153, Okanogan, WA

Built 1939 ADT: 6,821

GN RY

Unknown

Over: US ROUTE 97

0.2 N JCT SR 173, Okanogan, WA

Built 1948 ADT: 8,989

US 97

Unknown

Over: SR 155

51.2 N DOUGLAS CO, Okanogan, WA

Built 1964 ADT: 4,683

SR 153

Fair

Over: METHOW RIVER

18.9 N JCT US 97, Okanogan, WA

Built 1939 Load: 13.3 t ADT: 1,363

FAS ROUTE U243

Fair

Over: SIMILKAMEEN RIVER

.NESWS28T40NR27E, Okanogan, WA

Built 1950 Load: 13.3 t ADT: 985

COUNTY ROAD 2361

Fair

Over: SALMON CREEK

0.1 MI N JCT.4015, Okanogan, WA

Built 1976 Load: 14.3 t ADT: 235

COUNTY ROAD 3797

Fair

Over: TUNK CREEK

4.7 MI.N.RIVERSIDE, Okanogan, WA

Built 1973 Load: 16.2 t ADT: 76

SR 20

Fair

Over: METHOW RIVER

22.1 E CHELAN CO, Okanogan, WA

Built 1984 Load: 17.2 t ADT: 1,584

SR 20

Fair

Over: BONAPARTE CREEK

0.9 E JCT US 97, Okanogan, WA

Built 1933 Load: 17.8 t ADT: 1,780

SR 153

Fair

Over: METHOW RIVER

22.3 N JCT US 97, Okanogan, WA

Built 1935 Load: 18.1 t ADT: 1,363

COUNTY ROAD 9221

Fair

Over: SALMON CREEK

12.1 MI NW OKANOGAN, Okanogan, WA

Built 1969 Load: 18.1 t ADT: 20

SR 153

Fair

Over: METHOW RIVER

16.9 N JCT US 97, Okanogan, WA

Built 1939 Load: 18.8 t ADT: 1,363

IRR BIA RTE 74

Fair

Over: LITTLE NESPELEM RIVER

4.8 KM E OF COLVILLE AGCY, Okanogan, WA

Built 1994 Load: 19.1 t ADT: 20

IRR BIA RTE 74

Fair

Over: LITTLE NESPELEM RIVER

8.1 KM E OF COLVILLE AGCY, Okanogan, WA

Built 1994 Load: 19.1 t ADT: 10

COUNTY ROAD 9155

Fair

Over: CHILIWIST CREEK

01.8 MI.S.MALOTT, Okanogan, WA

Built 1944 Load: 19.4 t ADT: 1,352

COUNTY ROAD 2017

Fair

Over: W.FORK SALMON CREEK

02.23 MI W JCT 9229, Okanogan, WA

Built 1949 Load: 20.4 t ADT: 72

LAKE STREET

Fair

Over: SALMON CREEK

0.02 MI E MAIN ST, Okanogan, WA

Built 1973 Load: 20.4 t ADT: 260

HARTS PASS ROAD

Fair

Over: ROBINSON CREEK

1.73 MI UP RD #5400, Okanogan, WA

Built 1955 Load: 20.9 t ADT: 112

FAS ROUTE V242

Fair

Over: SINLAHEKIN CREEK

2.3 MI.N.LOOMIS, Okanogan, WA

Built 1966 Load: 21.1 t ADT: 114

OCR 3683

Fair

Over: MILL CREEK

1.29 NO.JCT.SR155, Okanogan, WA

Built 1958 Load: 21.4 t ADT: 92

FAS ROUTE F241

Fair

Over: SALMON CREEK

.SESWS6T35NR25E, Okanogan, WA

Built 1949 Load: 21.4 t ADT: 983

OCR 3683

Fair

Over: SMITH CREEK

0.72 NO.JCT.SR155, Okanogan, WA

Built 1958 Load: 21.4 t ADT: 92

FAS ROUTE 9221

Fair

Over: COUNTY ROAD 9221

.NW SE S4,T34,R25, Okanogan, WA

Built 1969 Load: 21.7 t ADT: 61

SR 153

Fair

Over: METHOW RIVER

4.3 N JCT US 97, Okanogan, WA

Built 1950 Load: 21.8 t ADT: 1,621

US 97

Fair

Over: OKANOGAN R & RR

18.3 N JCT SR 215, Okanogan, WA

Built 1957 Load: 21.8 t ADT: 4,552

COUNTY ROAD 1090

Fair

Over: TWISP RIVER

10.9 W.SR20 @ TWISP, Okanogan, WA

Built 1959 Load: 21.8 t ADT: 52

SR 153

Fair

Over: BLACK CANYON CREEK

6.6 N JCT US 97, Okanogan, WA

Built 1949 Load: 22.0 t ADT: 1,621

FOGGY DEW RD

Fair

Over: NORTH FK GOLD CREEK

NO DATA ENTERED, Okanogan, WA

Built 1949 Load: 22.7 t ADT: 37

BROADWAY STREET

Fair

Over: NORTH FORK CREEK

0.02 E OF MAIN ST., Okanogan, WA

Built 1982 Load: 23.0 t ADT: 50

CHEWACK RD

Fair

Over: LAKE CREEK

NO DATA ENTERED, Okanogan, WA

Built 1956 Load: 23.6 t ADT: 24

FIRST AVENUE

Fair

Over: SALMON CREEK

.3 MI S OF OAK ST, Okanogan, WA

Built 1970 Load: 23.7 t ADT: 260

COUNTY ROAD 4015

Fair

Over: SINLAHEKIN CREEK

3.1 S.9425@ LOOMIS, Okanogan, WA

Built 1973 Load: 24.0 t ADT: 56

SALMON/BOULDER RD

Fair

Over: NORTH FORK BOULDER CREEK

NO DATA ENTERED, Okanogan, WA

Built 1949 Load: 24.1 t ADT: 158

COUNTY ROAD 4723

Fair

Over: NINE MILE CREEK

NENWS15T40NR27E, Okanogan, WA

Built 1980 Load: 24.3 t ADT: 34

SILVER ST

Fair

Over: NORTH FORK SALMON CR

0.1 E MAIN ST, Okanogan, WA

Built 1997 Load: 24.3 t ADT: 50

IRR BIA RTE 56

Fair

Over: NORTH STAR CREEK

16 KM NORTH OF NESPELEM, Okanogan, WA

Built 1962 Load: 24.5 t ADT: 25

IRR BIA RTE 64

Fair

Over: WEST FORK SAN POIL RIVER

13 KM SW OF REPUBLIC, Okanogan, WA

Built 1962 Load: 24.5 t ADT: 75

IRR BIA RTE 6

Fair

Over: GOLD CREEK

21 KM SW OF REPUBLIC, Okanogan, WA

Built 1962 Load: 24.5 t ADT: 25

IRR BIA RTE 62

Fair

Over: GOLD CREEK

23 KM SW OF REPUBLIC, Okanogan, WA

Built 1962 Load: 24.5 t ADT: 25

IRR BIA RTE 1167

Fair

Over: NESPELEM RIVER

0.6 KM WEST OF AGENCY, Okanogan, WA

Built 1957 Load: 24.5 t ADT: 250

COUNTY ROAD 9140

Fair

Over: GATE CREEK

.NWSWS10T36NR19E, Okanogan, WA

Built 1971 Load: 24.6 t ADT: 488

SR 155 SPUR

Fair

Over: OKANOGAN RIVER

0.2 W JCT SR 155, Okanogan, WA

Built 1923 Load: 24.9 t ADT: 5,801

MID SALMON/BOULDER

Fair

Over: N. FK BOULDER CR

NO DATA ENTERED, Okanogan, WA

Built 1960 Load: 25.1 t ADT: 35

US 97

Fair

Over: OKANOGAN RIVER

15.6 N JCT SR 20, Okanogan, WA

Built 1951 Load: 25.4 t ADT: 3,220

FIFTH AVENUE

Fair

Over: SALMON CREEK

.07 S OF TYEE ST, Okanogan, WA

Built 1970 Load: 25.6 t ADT: 260

SALMON MEADOWS RD

Fair

Over: N.FORK SALMON CREEK

NO DATA ENTERED, Okanogan, WA

Built 1949 Load: 26.3 t ADT: 76

COUNTY ROAD 9221

Fair

Over: SALMON CREEK

12.7 MI NW OKANOGAN, Okanogan, WA

Built 1969 Load: 27.2 t ADT: 20

FAS ROUTE T242

Fair

Over: OKANOGAN RIVER

.SENWS14T38NR27E, Okanogan, WA

Built 1961 Load: 27.5 t ADT: 848

FAS ROUTE L242

Fair

Over: LOST RIVER

.NESE S25,T36,R19, Okanogan, WA

Built 1972 Load: 27.5 t ADT: 1,057

BONAPARTE AVE.

Fair

Over: BONAPARTE CREEK

0.1 S.SEVENTH ST., Okanogan, WA

Built 1972 Load: 27.9 t ADT: 100

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

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge 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.