List of Primary State Highways in Washington

Marker for PSH 1
Highway names
Primary: Primary State Highway X (PSH X)
Secondary: Secondard State Highway X (SSH X)
System links
State highways in 1970: primary in red and secondary in purple

Primary State Highways were major state highways in Washington state. They were used from 1905 to 1964. The 1964 state highway renumbering changed the highway numbering in the state to consolidate and create a more organized and systematic method of numbering the highways within the state.

History

The first state road, running across the Cascade Range roughly where State Route 20 now crosses it, was designated by the legislature in 1893 (However, this road wasn't actually opened until 1972). Two other roads - a Cascade crossing at present State Route 410 and a branch of the first road to Wenatchee - were added in 1897. The Washington Highway Department was established in 1905, and a set of twelve State Roads, numbered from 1 to 12, were assigned. A thirteenth was added in 1907, and State Roads 14 to 18 in 1909.[1]

However, it was not until 1913 that a connected system was laid out - earlier state roads had been disconnected segments of road needing improvements. The seven primary roads were only assigned names, while the older state roads kept their numbers as secondary roads. In 1923, most state roads were assigned new numbers, though the primary and secondary split remained, and several roads remained named only. The United States Numbered Highways were assigned in late 1926, overlapping some of the State Roads.

The first major reworking of the system was passed in 1937, including a complete renumbering. A number of Primary State Highways were designated, while Secondary State Highways were suffixed spurs off those. For instance, Primary State Highway 1 was the Pacific Highway (present Interstate 5), and Secondary State Highway 1B was a spur from Bellingham to the Canadian border (now State Route 539). U.S. Routes kept dual designations with State Highways. By 1952, the present highway shield, in the shape of George Washington's head, had been adopted.

The primary/secondary state highway systems was replaced by the current numbering system in the 1960s. The signs for the new highway numbers first were posted in 1964, while the PSH/SSH signs were removed in 1970.

Secondary State Highways

Secondary State Highways (SSH) were branches of Primary State Highways.[2]

Primary State Highway 1

Primary State Highway 1
Location: Vancouver to Canada–United States border
Existed: 1937–1964

PSH 1 followed the route of U.S. Route 99 (now Interstate 5) from Vancouver to Blaine. It also served U.S. Route 99 Alternate (now SR 11) in Skagit and Whatcom counties.

Primary State Highway 2

Primary State Highway 2
Location: Seattle to Idaho State Line
Existed: 1937–1964

This route followed the route of U.S. Route 10 (now Interstate 90) from Seattle to near Ellensburg, then U.S. Route 97 to Peshastin, then U.S. Route 2 to Spokane, then US 10/I-90 from Spokane to the Idaho state line. A southern branch of PSH 2 followed the route of Washington State Route 18 from Snoqualmie to Tacoma.

Primary State Highway 3

Primary State Highway 3
Location: Cle Elum to Canada–United States border
Existed: 1937–1964

This route followed Interstate 82 from Ellensburg to the Oregon State line (concurrent with U.S. Route 97 from Ellensburg to Union Gap and U.S. Route 410/12 from Union Gap to the Tri-Cities), U.S. Route 410 (now U.S. Route 12) from the Tri-Cities to Clarkston, U.S. Route 195 from Clarkston to Pullman, SR 27 from Pullman to Oaksedale, US 195 from Oakesdale to Spokane, U.S. Route 2 from Spokane to Mead and U.S. Route 395 from Mead to the U.S.-Canada border. Spurs extended along I-82/, SR 125 and SR 129 from Tri-Cities, Walla Walla and Clarkston to the Oregon State Line

This route was also known as the "Inland Empire Highway" and crossed the first, and for a time, the only highway bridge over the middle Columbia River. That bridge was located between the towns of Kennewick, WA and Pasco, WA.

Primary State Highway 4

Primary State Highway 4
Location: Tonasket to Wilbur
Existed: 1937–1964

This route followed State Route 30 (now part of State Route 20) from Tonasket to Republic and State Route 21 from Republic to Wilbur.

Primary State Highway 5

Primary State Highway 5
Location: Seattle to Yakima
Existed: 1937–1964

This route followed State Route 7 from Tacoma to Morton, the former State Route 14 (now U.S. Route 12) from Morton to Yakima.

Primary State Highway 6

Primary State Highway 6
Location: Spokane to Canada–United States border
Existed: 1937–1964

The route followed present-day U.S. Route 2 from Spokane to Newport, and State Route 31 (a portion of which is now State Route 20) from Newport to the Canada-United States border

Primary State Highway 7

Primary State Highway 7
Location: Ellensburg to Davenport
Existed: 1937–1964

This route followed U.S. Route 10/Interstate 90 from Ellensburg to George, State Route 281 from George to Quincy, and State Route 28 from Quincy to Davenport

Primary State Highway 8

Primary State Highway 8
Location: Vancouver to Buena
Existed: 1937–1964

The route followed State Route 14 (designated as Washington State Route 12 from 1964-67) from Vancouver, Washington to Maryhill, U.S. Route 97 from Maryhill to Toppenish and State Route 22 from Toppenish to Buena.

Primary State Highway 9

Primary State Highway 9
Location: Olympia to Mud Bay
Existed: 1937–1964

This route followed U.S. Route 101 from Olympia to Aberdeen.

Primary State Highway 10

Primary State Highway 10
Location: Olds Station to Canada–United States border
Existed: 1937–1964

This route ran on U.S. Route 97 from the U.S.-Canada border to Wenatchee, and State Route 28 from Wenatchee to Quincy. A spur extended along State Route 17 from Brewster to Coulee City

Primary State Highway 11

Primary State Highway 11
Location: Pasco to Spokane
Existed: 1937–1964

This route followed U.S. Route 395 from Pasco to Ritzville and U.S. Route 10/Interstate 90 from Ritzville to Spokane

Primary State Highway 12

Primary State Highway 12
Location: Chehalis to Kelso
Existed: 1937–1964

This route followed State Route 6 from Chehalis to Raymond, and U.S. Route 101 from Raymond to Johnsons Landing, and State Route 4 from Johnsons Landing to Kelso.

Primary State Highway 13

Primary State Highway 13
Location: Aberdeen to Raymond
Existed: 1937–1964

This route followed U.S. Route 101 in Washington from Aberdeen to Raymond.

Primary State Highway 14

Primary State Highway 14
Location: Hoodsport, Washington to Tacoma
Existed: 1937–1964

This route followed State Route 16 from Hoodsport to Tacoma

Primary State Highway 15

Primary State Highway 15
Location: Everett to Peshastin
Existed: 1937–1964

This route followed U.S. Route 2 from Everett to Peshastin

Primary State Highway 16

Primary State Highway 16
Location: Fredonia to Twisp
Existed: 1937–1964

This route followed State Route 20 from Fredonia to Pateros, and State Route 153 from Pateros to Twisp

Primary State Highway 17

Primary State Highway 17
Location: Twisp to Marblemount
Existed: 1937–1964

Primary State Highway 18

Primary State Highway 18
Location: George to Ritzville
Existed: 1937–1964

The route followed the route of U.S. Route 10 (now Interstate 90) from George to Ritzville

Primary State Highway 21

Primary State Highway 21
Location: Kingston to Gorst
Existed: 1937–1964
Primary State Highway No. 21, Tidewater Creek to Bremerton Section, 1941

The route followed present-day State Route 104 from the Kingston Ferry to the Hood Canal Bridge, then State Route 3 from the Hood Canal Bridge to Belfair, then State Route 106 from Belfair to Skokomish

Primary State Highway 22

Primary State Highway 22
Location: Davenport to Canada–United States border
Existed: 1937–1964

The route is co-terminus with present-day Washington State Route 25.

References

  1. ↑ State Roads As Established by Legislature, 1893 to 1935 -
  2. ↑ Highways of Washington State- SSH
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