Wikipedia:WikiProject U.S. Roads/Washington/List of all state highways before 1970

Numbered

 * SR 1/PSH 1
 * White River-Natches Road (1905-1913); became part of the McClellan Pass Highway
 * Pacific Highway (1923-1970)


 * SR 2/PSH 2
 * Newport-Orient Road (1905-1915)
 * Sunset Highway (1923-1970)


 * SR 3/PSH 3
 * Chelan-Skagit Road (1905-1915)
 * Inland Empire Highway (1923-1970)


 * SR 4/PSH 4
 * Sans Poil-Loomis Road (1905-1923); Tonasket-San Poil Highway (1923-1970)


 * SR 5/PSH 5
 * Cowlitz-Natches Road (1905-1923); National Park Highway System (1923-1937); National Park Highway (1937-1970)


 * SR 6/PSH 6
 * Waterfront Road (1905-1913); became part of the Pacific Highway
 * Pend O'Reille Highway (1923-1937); Pend Oreille Highway (1937-1963); Newport Highway (1963-1970)


 * SR 7/PSH 7
 * Snoqualmie Pass Road (1905-1919); became the Sunset Highway
 * North Central Highway (1923-1970)


 * SR 8/PSH 8
 * Columbia River Road (1905-1919); became the North Bank Highway
 * North Bank Highway (1923-1937); Evergreen Highway (1937-1970)


 * SR 9/PSH 9
 * Montesano-Port Angeles Road (1905-1913); became part of the Olympic Highway
 * Olympic Highway (1923-1970)


 * SR 10/PSH 10
 * Wenatchee-Oroville Road (1905-1917); became the Lake Chelan and Okanogan Highway
 * Chelan-Okanogan State Highway (1923-1937); Chelan-Okanogan Highway (1937-1970)


 * SR 11/PSH 11
 * Skagit River Road (1905-1917); became the Skagit Highway
 * Central Washington Highway (1923-1929); Columbia Basin Highway (1929-1970)


 * SR 12/PSH 12
 * Methow-Barron Road (1905-1919); became part of the Roosevelt Highway
 * Ocean Beach Highway (1923-1970)


 * SR 13/PSH 13
 * Cascade Wagon Road (1907-1915); became the Cascade Wagon Road
 * Willapa-Grays Harbor Highway (1923-1970)


 * SR 14/PSH 14
 * Hood Canal Road (1909-1913); became part of the Olympic Highway
 * Navy Yard Highway (1923-1970)


 * SR 15/PSH 15
 * Lewis River Road (1909-1919)
 * Stevens Highway (1931-1970)


 * SR 16/PSH 16
 * Garfield-Asotin Road (1909-1919)
 * Methow Valley Highway (1937-1961); North Cross State Highway (1961-1970)


 * SR 17/PSH 17
 * Island-Skagit Road (1909-1919)
 * Cascade Wagon Road (1937-1961)


 * SR 18/PSH 18
 * Alder-Kosmos Road (1909-1923); became part of SR 5 National Park Highway System
 * No name (1937-1970)


 * SR 19
 * No name (1915-1919); became the Ocean Beach Highway


 * SR 20
 * No name (1915-1923); became SR 13 Willapa-Grays Harbor Highway


 * SR 21/PSH 21
 * No name (1915-1937); Kitsap Peninsula Highway (1937-1970)


 * SR 22/PSH 22
 * No name (1915-1937); Coulee Reservoir Highway (1937-1970)


 * SR 23
 * No name (1915-1917); became the Pend Oreille Highway

Named
This is a list of the highways that only had names between 1913 and 1937.
 * Pacific Highway (1913-1923); became SR 1 Pacific Highway
 * Sunset Highway (1913-1923); became SR 2 Sunset Highway
 * Inland Empire Highway (1913-1923); became SR 3 Inland Empire Highway
 * First Division of the Eastern Route of the Inland Empire Highway (1913-1923); became part of SR 3 Inland Empire Highway
 * Second Division of the Eastern Route of the Inland Empire Highway (1913-1923); Eastern Route of the Inland Empire Highway (1923-1937); became part of PSH 3 Inland Empire Highway
 * National Park Highway (1913-1923); became SR 5 National Park Highway System
 * McClellan Pass Highway (1913-1921); Naches Pass Highway (1921-1923); became part of SR 5 National Park Highway System
 * Pend Oreille Highway (1917-1923); became SR 6 Pend O'Reille Highway
 * North Central Highway (1915-1923); became SR 7 North Central Highway
 * North Bank Highway (1919-1923); became SR 8 North Bank Highway
 * Olympic Highway (1913-1923); became SR 9 Olympic Highway
 * Lake Chelan and Okanogan Highway (1917-1919); Chelan and Okanogan Highway (1919-1923); became SR 10 Chelan-Okanogan State Highway
 * Central Washington Highway (1913-1923); became SR 11 Central Washington Highway
 * Ocean Beach Highway (1919-1923); became SR 12 Ocean Beach Highway
 * Navy Yard Highway (1919-1923); became SR 14 Navy Yard Highway
 * Skagit Highway (1917-1919); Roosevelt Highway (1919-1923); Methow Valley Highway (1923-1937); became PSH 16 Methow Valley Highway

Alphanumeric

 * PSH 1
 * SSH 1A (1937-1970)
 * SSH 1B (1937-1970)
 * SSH 1C (1937-1970)
 * SSH 1D (1937-1970)
 * SSH 1E (1937-1970)
 * SSH 1F (1937-1961, 1967-1970)
 * SSH 1G (1937-1970)
 * SSH 1H (1937-1970)
 * SSH 1I (1937-1970)
 * SSH 1J (1937-1970)
 * SSH 1K (1937-1970)
 * SSH 1L (1937-1970)
 * SSH 1M (1937-1970)
 * SSH 1N (1937-1943, 1943-1970)
 * SSH 1P (1937-1970)
 * SSH 1Q (1937-1970)
 * SSH 1R (1937-1970)
 * SSH 1S (1937-1970)
 * SSH 1T (1937-1970)
 * SSH 1U (1937-1970)
 * SSH 1V (1937-1970)
 * SSH 1W (1937-1970)
 * SSH 1X (1937-1970)
 * SSH 1Y (1945-1970)
 * SSH 1Z (1953-1970)


 * PSH 2
 * SSH 2A (1937-1963)
 * SSH 2B (1937-1970)
 * SSH 2C (1937-1943)
 * SSH 2D (1937-1970)
 * SSH 2E (1937-1970)
 * SSH 2F (1937-1970)
 * SSH 2G (1937-1970)
 * SSH 2H (1937-1970)
 * SSH 2I (1937-1970)
 * SSH 2J (1957-1970)
 * SSH 2K (1967-1970)
 * SSH 2M (1959-1970)


 * PSH 3
 * SSH 3A (1937-1970)
 * SSH 3B (1937-1970)
 * SSH 3C (1937-1957)
 * SSH 3D (1937-1970)
 * SSH 3E (1937-1970)
 * SSH 3F (1937-1970)
 * SSH 3G (1969-1970)
 * SSH 3H (1937-1970)
 * SSH 3I (1937-1953)
 * SSH 3J (1937-1970)
 * SSH 3K (1937-1970)
 * SSH 3L (1937-1970)
 * SSH 3M (1937-1953)
 * SSH 3P (1953-1970)
 * SSH 3R (1953-1970)
 * SSH 3S (1959-1970)
 * SSH 3T (1963-1970)
 * SSH 3U (1967-1970)
 * SSH 3V (1967-1970)


 * PSH 4
 * SSH 4A (1937-1970)
 * SSH 4B (1937-1970)
 * SSH 4C (1937-1970)


 * PSH 5
 * SSH 5A (1937-1970)
 * SSH 5B (1937-1963)
 * SSH 5C (1937-1970)
 * SSH 5D (1937-1970)
 * SSH 5E (1937-1970)
 * SSH 5G (1937-1970)
 * SSH 5H (1937-1970)
 * SSH 5I (1937-1970)
 * SSH 5J (1937-1970)
 * SSH 5K (1937-1970)
 * SSH 5L (1937-1967)
 * SSH 5M (1937-1959)
 * SSH 5N (1955-1970)


 * PSH 6
 * SSH 6A (1937-1970)
 * SSH 6B (1937-1970)


 * PSH 7
 * SSH 7B (1937-1953)
 * SSH 7C (1951-1970)
 * SSH 7E (1955-1970)


 * PSH 8
 * SSH 8A (1937-1970)
 * SSH 8B (1937-1970)
 * SSH 8C (1937-1961)
 * SSH 8D (1937-1970)
 * SSH 8E (1937-1953, 1961-1970)


 * PSH 9
 * SSH 9A (1937-1970)
 * SSH 9B (1937-1955)
 * SSH 9C (1937-1970)
 * SSH 9D (1937-1970)
 * SSH 9E (1937-1970)
 * SSH 9F (1937-1959)
 * SSH 9G (1959-1970)


 * PSH 10
 * SSH 10A (1937-1970)
 * SSH 10B (1937-1970)
 * SSH 10C (1937-1970)
 * SSH 10D (1937-1970)


 * PSH 11
 * SSH 11A (1937-1970)
 * SSH 11B (1937-1970)
 * SSH 11C (1937-1953, 1961-1970)
 * SSH 11D (1953-1970)
 * SSH 11E (1937-1970)
 * SSH 11F (1937-1970)
 * SSH 11G (1951-1970)
 * SSH 11H (1961-1970)
 * SSH 11I (1967-1970)


 * PSH 12
 * SSH 12A (1937-1970)
 * SSH 12B (1937-1970)
 * SSH 12C (1937-1970)
 * SSH 12D (1937-1970)
 * SSH 12E (1937-1970)
 * SSH 12F (1943-1970)
 * SSH 12G (1959-1970)
 * SSH 12H (1957-1970)


 * PSH 13
 * SSH 13A (1937-1970)


 * PSH 14
 * SSH 14A (1937-1970)
 * SSH 14B (1937-1955)
 * SSH 14C (1937-1939)


 * PSH 15
 * SSH 15A (1937-1970)
 * SSH 15B (1937-1970)
 * SSH 15C (1937-1970)
 * SSH 15D (1937-1970)


 * PSH 16
 * SSH 16A (1967-1970)


 * PSH 17
 * SSH 17A (1937-1961)


 * PSH 21
 * SSH 21A (1937-1970)
 * SSH 21B (1937-1970)
 * SSH 21C (1957-1970)


 * PSH 22
 * SSH 22A (1937-1970)

Fate of the pre-1923 highways

 * SR 6 Waterfront Road (1905-13) &rarr; Pacific Highway (1913-23) &rarr; SR 1 (1923-37) &rarr; PSH 1
 * SR 7 Snoqualmie Pass Road (1905-19) &rarr; Sunset Highway (1919-23) &rarr; SR 2 (1923-37) &rarr; PSH 2
 * SR 4 Sans Poil-Loomis Road (1905-37) &rarr; PSH 4
 * SR 1 White River-Natches Road (1905-13) &rarr; McClellan Pass Highway (1913-21) &rarr; Naches Pass Highway (1921-23) &rarr; SR 5 (1923-37) &rarr; PSH 5
 * SR 5 Cowlitz-Natches Road (1905-23), SR 18 Alder-Kosmos Road (1909-23) &rarr; SR 5 (1923-37) &rarr; PSH 5
 * SR 23 (1915-17) &rarr; Pend Oreille Highway (1917-23) &rarr; SR 6 (1923-37) &rarr; PSH 6
 * SR 8 Columbia River Road (1905-37) &rarr; PSH 8
 * SR 9 Montesano-Port Angeles Road (1905-13), SR 14 Hood Canal Road (1909-13) &rarr; Olympic Highway (1913-23) &rarr; SR 9 (1923-37) &rarr; PSH 9
 * SR 10 Wenatchee-Oroville Road (1905-17) &rarr; Chelan and Okanogan Highway (1917-23) &rarr; SR 10 (1923-37) &rarr; PSH 10
 * SR 19 (1915-19) &rarr; Ocean Beach Highway (1919-23) &rarr; SR 12 (1923-37) &rarr; PSH 12
 * SR 20 (1915-23) &rarr; SR 13 (1923-37) &rarr; PSH 13
 * SR 12 Methow-Barron Road (1905-19) &rarr; Roosevelt Highway (1919-23) &rarr; Methow Valley Highway (1923-37) &rarr; PSH 16
 * SR 13 Cascade Wagon Road (1907-15) &rarr; Cascade Wagon Road (1915-37) &rarr; PSH 17
 * SR 21 (1915-37) &rarr; PSH 21
 * SR 22 (1915-37) &rarr; PSH 22


 * SR 2 Newport-Orient Road (1905-15) deleted
 * SR 3 Chelan-Skagit Road (1905-15) deleted
 * SR 11 Skagit River Road (1905-17) &rarr; Skagit Highway (1917-19) &rarr; Roosevelt Highway (1919-23) deleted when the Roosevelt Highway was truncated as the Methow Valley Highway
 * SR 15 Lewis River Road (1909-19) deleted
 * SR 16 Garfield-Asotin Road (1909-19) deleted
 * SR 17 Island-Skagit Road (1909-19) deleted