Example signage of a Washington State Route

The Washington State Route system is the official name given to the highway system in Washington owned, maintained, and managed by the Washington State Department of Transportation. Every highway route in Washington State is considered a state route (SR), regardless of designation. Washington State Route 520 File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... State nickname: The Evergreen State Other U.S. States Capital Olympia Largest city Seattle Governor Christine Gregoire Official languages None Area 184,824 km² (18th)  - Land 172,587 km²  - Water 12,237 km² (6. ... The Washington State Department of Transportation, or WSDOT, led by a Secretary and overseen by the Washington State Transportation Commission, is a Washington governmental agency that constructs, maintains, and regulates the use of the states transportation infrastructure. ...

Former system

From 1923 until 1965, Washington had two different levels of highways, differentiated by use of numbers and letters. Primary State Highways (PSH) were assigned a one or two digit number. Secondary State Highways (SSH) were either spur or loop routes, designated by a letter suffix (i.e. SSH 1-D split from PSH 1). By the 1960s this system was becoming confusing, especially as Interstate Highway System was taking over routes. It was then decided to reformulate the system. 1923 was a common year starting on Monday (link will take you to calendar). ... 1965 was a common year starting on Friday (the link is to a full 1965 calendar). ... State nickname: The Evergreen State Other U.S. States Capital Olympia Largest city Seattle Governor Christine Gregoire Official languages None Area 184,824 km² (18th)  - Land 172,587 km²  - Water 12,237 km² (6. ... Events and trends The 1960s was a turbulent decade of change around the world. ... A typical rural stretch of Interstate highway, with two lanes in each direction separated by a large grassy median, and with cross-traffic limited to overpasses and underpasses. ...

Current system

The current system was adopted on December 1, 1965.[1] (http://www.wsdot.wa.gov/research/History/idpart1.pdf) Major routes get one or two digit numbers, or are U.S. Highways. Odd-numbered major routes run north-south and are numbered from 3 in the west to 31 in the east. Even-numbered routes are similar, but run in three strips (separated by I-5 and roughly the Columbia River). The west strip runs from 4 north to 8. 14 picks up east of I-5, running north to 20, and 22 to 28 run through the third strip. December 1 is the 335th (in leap years the 336th) day of the year in the Gregorian calendar. ... 1965 was a common year starting on Friday (the link is to a full 1965 calendar). ... Current U.S. Highway shield The United States Highway System is an integrated system of roads in the United States numbered within a nationwide grid. ... This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... Columbia River Gorge, Washington or North side Geography The Columbia River is the largest river in volume flowing into the Pacific Ocean from North America. ...

Some exceptions are present due to U.S. Highways and former U.S. Highways; for example SR 10 is former US 10 and SR 410 is former US 410. Current U.S. Highway shield The United States Highway System is an integrated system of roads in the United States numbered within a nationwide grid. ... United States Highway 10 is an east-west United States highway. ...

Three-digit numbers are assigned to minor routes. They are typically assigned a "parent" one or two digit route, and a number is added to the end. For instance, 104 and 117 are spurs of US 101, 505 and 527 are spurs of I-5, and 261 is a spur of 26. Several U.S. Highways are assigned two-digit numbers (which fit the grid) - US 97 is 15 and US 395 is 29. US 97 has spurs using both methods (examples are 153 and 971) and US 395 has spurs like 291 and 397. Typically the three-digit routes run in sequence from the south or west end of the parent to the north or east end. U.S. Highway 101, or U.S. Route 101 (U.S. 101), is a north-south highway that is aligned along the Pacific West Coast of the United States. ... This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... United States Highway 97 is a major north-south United States highway in the western United States. ... Summary United States Highway 395 is a scenic highway that starts in the Mojave Desert at Interstate 15 near Hesperia, runs along the east side of the Sierra Nevada in the Owens Valley, winds through Carson City, Reno, back into California, crosses through the Modoc Plateau, and into eastern Oregon...

"Children" of 9 are only two digits (92 and 96); otherwise they would conflict with children of I-90. Interstate 90 is the longest interstate highway in the United States. ...

List of routes

• U.S. Highway 101
  • Washington State Route 100
  • Washington State Route 101
  • Washington State Route 102
  • Washington State Route 103
  • Washington State Route 104
  • Washington State Route 105
  • Washington State Route 106
  • Washington State Route 107
  • Washington State Route 108
  • Washington State Route 109
  • Washington State Route 110
  • Washington State Route 111
  • Washington State Route 112
  • Washington State Route 113
  • Washington State Route 115
  • Washington State Route 116
  • Washington State Route 117
  • Washington State Route 118
  • Washington State Route 119
• U.S. Highway 2
  • Washington State Route 202
  • Washington State Route 203
  • Washington State Route 204
  • Washington State Route 206
  • Washington State Route 207
• Washington State Route 3
  • Washington State Route 300
  • Washington State Route 302
  • Washington State Route 303
  • Washington State Route 304
  • Washington State Route 305
  • Washington State Route 307
  • Washington State Route 308
  • Washington State Route 310
  • Washington State Route 339
• Washington State Route 4
  • Washington State Route 401
  • Washington State Route 409
  • Washington State Route 410 (former U.S. Highway 410, not actually connected to SR 4)
  • Washington State Route 411 (child of SR 410)
  • Washington State Route 432
  • Washington State Route 433
• Interstate 5
  • Interstate 205
  • Interstate 405
  • Interstate 705
  • Washington State Route 500
  • Washington State Route 501
  • Washington State Route 502
  • Washington State Route 503
  • Washington State Route 504
  • Washington State Route 505
  • Washington State Route 506
  • Washington State Route 507
  • Washington State Route 508
  • Washington State Route 509
  • Washington State Route 510
  • Washington State Route 512
  • Washington State Route 513
  • Washington State Route 515
  • Washington State Route 516
  • Washington State Route 518
  • Washington State Route 519
  • Washington State Route 520
  • Washington State Route 522
  • Washington State Route 523
  • Washington State Route 524
  • Washington State Route 525
  • Washington State Route 526
  • Washington State Route 527
  • Washington State Route 528
  • Washington State Route 529
  • Washington State Route 530
  • Washington State Route 531
  • Washington State Route 532
  • Washington State Route 534
  • Washington State Route 536
  • Washington State Route 538
  • Washington State Route 539, Bellingham to Canadian Border (originally Alternate US-99).
  • Washington State Route 542
  • Washington State Route 543
  • Washington State Route 544
  • Washington State Route 546
  • Washington State Route 547
  • Washington State Route 548
  • Washington State Route 599 (runs between I-5 and SR 99)
• Washington State Route 6
• Washington State Route 7
  • Washington State Route 702
  • Washington State Route 706
• Washington State Route 8
• Washington State Route 9
  • Washington State Route 92
  • Washington State Route 96
• Washington State Route 10 (former U.S. Highway 10)
• Washington State Route 11
• U.S. Highway 12
  • Washington State Route 121
  • Washington State Route 122
  • Washington State Route 123
  • Washington State Route 124
  • Washington State Route 125
  • Washington State Route 126
  • Washington State Route 127
  • Washington State Route 128
  • Washington State Route 129
  • Washington State Route 131
• Washington State Route 14
  • Washington State Route 141
  • Washington State Route 142
• Washington State Route 15 (US 97)
  • Washington State Route 150
  • Washington State Route 153
  • Washington State Route 155
• Washington State Route 16
  • Washington State Route 160
  • Washington State Route 161
  • Washington State Route 162
  • Washington State Route 163
  • Washington State Route 164
  • Washington State Route 165
  • Washington State Route 166
  • Washington State Route 167
  • Washington State Route 169
• Washington State Route 17
  • Washington State Route 170
  • Washington State Route 171
  • Washington State Route 172
  • Washington State Route 173
  • Washington State Route 174
  • Washington State Route 175
• Washington State Route 18
  • Washington State Route 181
• Washington State Route 19
• U.S. Highway 195
  • Washington State Route 193
  • Washington State Route 194
• Washington State Route 20
  • Washington State Route 211
  • Washington State Route 215
• Washington State Route 21
• Washington State Route 22
  • Washington State Route 221
  • Washington State Route 223
  • Washington State Route 224
  • Washington State Route 225
• Washington State Route 23
  • Washington State Route 231
• Washington State Route 24
  • Washington State Route 240
  • Washington State Route 241
  • Washington State Route 243
• Washington State Route 25
• Washington State Route 26
  • Washington State Route 260
  • Washington State Route 261
  • Washington State Route 262
  • Washington State Route 263
• Washington State Route 27
  • Washington State Route 270
  • Washington State Route 271
  • Washington State Route 272
  • Washington State Route 274
  • Washington State Route 278
• Washington State Route 28
  • Washington State Route 281
  • Washington State Route 282
  • Washington State Route 283
  • Washington State Route 285
• Washington State Route 29 (US 395)
  • Washington State Route 290
  • Washington State Route 291
  • Washington State Route 292
• Washington State Route 31
• U.S. Highway 395
  • Washington State Route 397
• Washington State Route 41
• Interstate 82
  • Interstate 182
  • Washington State Route 821
  • Washington State Route 823
• Interstate 90
  • Washington State Route 900
  • Washington State Route 902
  • Washington State Route 903
  • Washington State Route 904
  • Washington State Route 906
  • Washington State Route 908
• U.S. Highway 97
  • Washington State Route 970
  • Washington State Route 971
• U.S. Highway 99
• Washington State Route 99, originally U.S. Highway 99.
• U.S. Highway 197
• Washington State Route 410
• U.S. Highway 730

List of Alternate U.S. Highways in Washington U.S. Highway 101, or U.S. Route 101 (U.S. 101), is a north-south highway that is aligned along the Pacific West Coast of the United States. ... Washington State Route 102 is a short highway north of Shelton, Washington that goes from U.S. Highway 101 to the Washington State Corrections Center, about 2 miles. ... Washington State Route 104 is a highway in the state of Washington, U.S.A. It extends from Discovery Bay in the northwest to Lake Forest Park in the southeast. ... Washington State Route 108 goes from Washington State Route 8 in McCleary, Washington to U.S. Highway 101 south of Shelton. ... United States Highway 2 is an east-west United States highway. ... Washington State Route 3 is a highway in the state of Washington, U.S.A. It extends just over 59 miles from Shelton in the southwest to the east end of the Hood Canal Floating Bridge in the northeast. ... Washington State Route 302 is a highway that connects Allyn, Washington (near Belfair) to Purdy, Washington. ... Washington State Route 410, formerly U.S. Highway 410, is a 107. ... Washington State Route 410, formerly U.S. Highway 410, is a 107. ... Interstate 5, or I-5, is an interstate highway along the west coast of the United States. ... Interstate 205, also known as the War Veterans Memorial Freeway in Washington and Oregon, is a loop route that serves the Portland, Oregon-Vancouver, Washington metropolitan area. ... Interstate 405 in Washington is a 30-mile loop route that bypasses downtown Seattle east of Lake Washington. ... Interstate 705 is a short interstate spur route of Interstate 5 located entirely within Tacoma, Washington. ... State Route 504 (also known as the Spirit Lake Memorial Highway), is a highway that runs east from Castle Rock, Washington for 52 miles to its present terminus at Johnston Ridge Observatory at the northern base of Mount St. ... Washington State Route 509 is a highway in the state of Washington, U.S.A. It extends just over 35 miles (56. ... Washington State Route 513 is a state highway entirely within Seattle, Washington, 3. ... Washington State Route 518 is a highway in the state of Washington, U.S.A. It extends just under 3. ... Washington State Route 519 is a highway entirely within the city of Seattle, Washington, slightly over a mile in length. ... Washington State Route 520 is a freeway in the state of Washington, U.S.A. It extends 14 miles from Seattle in the west to Redmond in the east. ... Washington State Route 522 (SR-522) connects Seattle to its northeastern suburbs. ... Washington State Route 523 is a 2. ... Washington State Route 525, commonly known as SR-525, WA-525, or Highway 525, is a highway in the state of Washington, U.S.A. It extends almost 31 miles from Lynnwood in the east to an area near Keystone in the west, not counting a portion that is carried... Washington State Route 526, commonly known as SR-526, WA-526, Casino Freeway, Boeing Freeway or Highway 526, is a highway in the state of Washington, U.S.A. It extends almost 7 miles from Everett in the east to Mukilteo in the west. ... Washington State Route 599 is a highway entirely within the city of Tukwila, Washington. ... Washington State Route 8 is a short highway connecting U.S. Highway 12 in Elma, Washington to U.S. Highway 101 near Olympia, Washington. ... Categories: Stub | United States Highway system | U.S. highways in North Dakota ... United States Highway 12 is an east-west United States highway. ... Washington State Route 16 is a highway in the state of Washington, U.S.A. It extends just over 27 miles (43 km) from Tacoma in the southeast to Gorst in the northwest. ... Washington State Route 167 connects Interstate 5 in Tacoma with Interstate 405 in Renton. ... Highway 18 is a 30-mile long Washington state route which connects south King County with Interstate 90. ... U.S. Highway 195 is a spur of U.S. Highway 95. ... Washington State Route 20, Highway 20, SR-20, or The North Cascades Highway is a State Highway (Route) in Washington State. ... United States Highway 395 is a scenic highway that starts in the Mojave Desert at Interstate 15 near Hesperia, runs along the east side of the Sierra Nevada in the Owens Valley, winds through Carson City, Reno, back into California, crosses through the Modoc Plateau, and into eastern Oregon, into... Interstate 82 is an interstate highway in the northwestern United States. ... Interstate 182 is a short interstate spur route of Interstate 82 located in the Tri-Cities region of Washington state. ... Interstate 90 is the longest interstate highway in the United States. ... Washington State Route 900 is a highway in the state of Washington, U.S.A. It extends just over 16 miles from Tukwila in the west to Issaquah in the east. ... United States Highway 97 is a major north-south United States highway in the western United States. ... Detail from antique road map of US 99 through California. ... Washington State Route 99 is a highway in the state of Washington, U.S.A. It extends just over 50 miles from Fife in the south to Everett in the east. ... U.S. Highway 197 is a spur of U.S. Highway 97. ... Washington State Route 410, formerly U.S. Highway 410, is a 107. ...

• Alternate US-99, now Washington State Highway 539.

Alternate US-99 was designated from Bellingham to the border with Canada from 1954 to 1969. ...

See also

• List of state highways in the United States

See also List of roads and highways Categories: Lists of roads | Transportation in the United States | State highways ...

External links

• Washington State Department of Transportation (http://www.wsdot.wa.gov/)
• Highways of Washington State (http://www.angelfire.com/wa2/hwysofwastate/index.html)