Mountain pass closure and opening dates

Historic opening and closing dates for Chinook, Cayuse and North Cascades passes

Chinook Pass SR 410

Year

Opened

Closed

2021

May 28

Nov 9

2020

June 4

Nov 12

2019

May 23
reopened -- Oct. 25

Oct. 19 - temporary
Nov. 21

2018

June 11

Nov. 20

2017

June 9

Nov. 7

2016

May 17

Nov. 29

2015

April 2

Nov. 16

2014

May 23

Nov. 24

2013

May 17

Dec. 2

2012

May 25

Nov. 12

2011

June 23

Nov. 11

2010

May 28

Nov. 16

2009

May 22

Nov. 8

2008

June 5

Dec. 15

2007

May 24

Nov. 29

2006

May 25

Nov. 12

2005

Apr. 28

Oct. 25

2004

May 6

Dec. 7

2003

May 14

Nov. 17

2002

May 31

Dec. 10

2001

May 10

Nov. 26

2000

May 18

Nov. 27

1999

Jul. 1

Nov. 30

1998

May 20

Nov. 20

1997

Jun. 12

Nov. 19

1996

May 23

Nov. 16

1995

Jun. 7

Nov. 7

1994

May 27 *

Oct. 31

1993

May 28 *

Nov. 18 **

1992

May 8

Nov. 21

1991

May 24

Nov. 19

1990

May 17

Nov. 21

1989

May 26

Nov. 28

1988

May 12

Nov. 10

1987

May 13

Nov. 23

1986

May 22

Nov. 18

1985

May 22

Nov. 9

1984

May 24

Nov. 5

1983

May 25

Nov. 14

1982

Jun. 10

Nov. 16

1981

Apr. 29

Nov. 20

1980

May 21

Nov. 17

1979

May 25

Nov. 24

1978

May 25

Nov. 18

1977

N/A

Nov. 15

1976

Jun. 11

None

1975

Jun. 13

Oct. 28

1974

Jul. 12

Dec. 18

1973

Apr. 5

Nov. 9

1972

Jun. 23

Nov. 9

1971

Jun. 18

Nov. 1

1970

May 29

Nov. 11

1969

May 27

Dec. 10

1968

May 10

Nov. 22

1967

Jun. 3

Nov. 28

1966

May 26

Nov. 16

1965

May 28

Nov. 24

1964

Jun. 20

Nov. 22

1963

May 28

Nov. 7

1962

May 20

Nov. 25

1961

Jun. 6

Nov. 11

1960

May 25

Nov. 15

1959

May 22

Nov. 19

1958

May 24

Nov. 9

1957

May 10

Nov. 27

1956

Jun. 13

Nov. 16

1955

Jun. 6

Nov. 17

1954

Jun. 19

Dec. 5

1953

May 30

Nov. 21

1952

May 16

Dec. 4

1951

May 19

Nov. 11

1950

Jun. 7

Nov. 15

1949

May 27

Dec. 9

1948

Jun. 12

Nov. 3

1947

May 15

Nov. 5

1946

Jun. 27

Nov. 1

1945

Jun. 2

Nov. 9

1944

May 20

Nov. 23

1943

Jun. 18

Nov. 4

1942

May 3

Nov. 3

1941

Apr. 15

Dec. 15

1940

May 15

Nov. 8

1939

May 7

Dec. 15

1938

May 28

Nov. 16

1937

Jun. 1

Nov. 12

1936

May 23

Dec. 8

1935

May 21

Nov. 15

* Due to Construction

** SR 410 North of Chinook Pass Closed 11/1/93 Due to Construction

*** Temporary Closure Date

Cayuse Pass SR 123

Year

Opened

Closed

2021

May 28

Nov 9

2020

June 4

Nov. 12

2019

May 23 - reopened - Oct. 20

Oct. 19 - temporary
Nov. 21

2018

June 11

Nov. 20

2017

May 19

Nov. 7

2016

April 29

Nov. 29

2015

April 2

Nov. 16

2014

May 16

Nov. 24

2013

May 3

Nov. 20

2012

May 8

Nov. 12

2011

May 26

Nov. 11

2010

April 30

Nov. 16

2009

May 15

Nov. 8

2008

May 23

Dec. 15

2007

Sept. 29 #

Nov. 29

2006

Jun. 30

Nov. 12

2005

Apr. 21

Nov. 4

2004

Apr. 30

Dec. 6

2003

Apr. 18

Nov. 18

2002

May 6

Dec. 12

2001

Apr. 20

Nov. 26

2000

Apr. 20

Nov. 28

1999

Jun. 3

Nov. 30

1998

Apr. 25

Nov. 23

1997

May 23

Nov. 20

1996

Jun. 21#

Oct. 7##

1995

May 24

Dec. 4

1994

May 23 *

Oct. 31

1993

May 28 *

Nov. 18

1992

Mar. 30

Nov. 30

1991

May 3

Dec. 7

1990

May 17

Nov. 24

1989

May 1

Jan. 4, 1990

1988

Apr. 15

Nov. 17

1987

Apr. 3

Nov. 30

1986

Apr. 10

Nov. 28

1985

Apr. 19

Nov. 17

1984

Apr. 6

Nov. 16

1983

Apr. 7

Nov. 24

1982

Apr. 30

Dec. 2

1981

Mar. 18

Nov. 30

1980

Apr. 21

Dec. 4

1979

Apr. 23

Jan. 8, 1980

1978

Apr. 3

Dec. 10

1977

N/A

Dec. 2

1976

May 14

None

1975

Apr. 29

Nov. 30

1974

May 29

Dec. 30

1973

Not available

Dec. 12

* Due to Construction

*** Temporary Closure Date

# Due to Winter Storm Damage

## For Repair of Winter Storm Damage

North Cascades SR 20

Year

Opened

Closed

2021

May 5

Nov 15

2020

May 12

Nov. 16

2019

April 18

Dec. 11

2018

May 11

Nov. 28

2017

May 16

Nov. 10

2016

April 22

Nov. 18

2015

April 3

Nov. 12

2014

May 8

Nov. 24

2013

April 16

Dec. 3

2012

May 10

Nov. 20

2011

May 25

Nov. 21

2010

April 16

Dec. 1

2009

April 24

Nov. 17

2008

May 1

Dec. 15

2007

April 26

Dec. 4

2006

May 1

Nov. 13

2005

Mar. 10

Nov. 3

2004

Apr. 8

Dec. 13

2003

Apr. 14

Oct 17

2002

May 7

Dec. 17

2001

Mar. 22

Nov. 19

2000

Mar. 30

Nov. 28

1999

May 5

Dec. 6

1998

Apr. 2

Nov. 20

1997

May 7

Dec. 16

1996

Apr. 24

Nov. 19

1995

Apr. 28

Nov. 5

1994

Apr. 7

Oct. 31

1993

Mar. 24

Dec. 8

1992

Apr. 9

Dec. 8

1991

May 2

Nov. 17

1990

Apr. 18

Nov. 12

1989

Apr. 21

Jan. 3, 1990

1988

Apr. 20

Nov. 19

1987

Apr. 15

Dec. 1

1986

Apr. 11

Nov. 26

1985

Apr. 12

Nov. 15

1984

Apr. 4

Nov. 2

1983

Apr. 20

Nov. 24

1982

May 6

Dec. 2

1981

Apr. 24

Nov. 30

1980

Apr. 18

Nov. 27

1979

Apr. 10

Dec. 15

1978

Apr. 21

Dec. 11

1977

N/A

Nov. 23

1976

May 21

None

1975

May 16

Nov. 24

1974

Jun. 14

Nov. 21

1973

Apr. 27

Nov. 21

1972

Sept. 2

Nov. 26

* Due to Construction

*** Temporary Closure Date

# Due to Winter Storm Damage

## For Repair of Winter Storm Damage

14 fish passage projects were completed in 2020

improving access to 54.2 miles of upstream habitat.

11,959 incidents responded to

by WSDOT’s incident Response teams during second quarter of 2021, 15% more than same quarter in 2020.

41 Pre-existing Funds Projects Advertised

during the eighth quarter of the 2019-2021 biennium.