List of Primary State Highways in Washington

List of Primary State Highways in Washington
WA-PSH1.svg
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 Washington
Interstate • US • State
Former PSH • 1964 renumbering • Former SR
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.

Contents

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. 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.

Secondary State Highways

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

  • Branches of PSH 1
  • Branches of PSH 2
  • Branches of PSH 3
  • Branches of PSH 4
  • Branches of PSH 5
  • Branches of PSH 6
  • Branches of PSH 7
  • Branches of PSH 8
  • Branches of PSH 9
  • Branches of PSH 10
  • Branches of PSH 11
  • Branches of PSH 12
  • Branches of PSH 13
  • Branches of PSH 14
  • Branches of PSH 15
  • Branches of PSH 16
  • Branches of PSH 17
  • Branches of PSH 21
  • Branches of PSH 22

Primary State Highway 1

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

Primary State Highway 2

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

Primary State Highway 3

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

Primary State Highway 4

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

Primary State Highway 5

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

Primary State Highway 6

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

Primary State Highway 7

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

Primary State Highway 8

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

Primary State Highway 9

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

Primary State Highway 10

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

Primary State Highway 11

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

Primary State Highway 12

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

Primary State Highway 13

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

Primary State Highway 14

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

Primary State Highway 15

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

Primary State Highway 16

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

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

Primary State Highway 21

Primary State Highway 21
Location: Kingston to Gorst
Existed: 1937–1964

Primary State Highway 22

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

References


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