Corridor sketch initiative

The Corridor Sketch Status brochure (pdf 726 kb) describes the program and its accomplishments.

The User Guide for Corridor Sketch Summaries (pdf 428 kb) provides a brief description of information presented in each summary along with potential strategies to address congested areas of the highway.

Corridor sketch summaries

View Corridor Sketch Summary map

Summary reports by region

Eastern Region

• US 2: I-90 Jct (Spokane) to SR 206 Jct (N. Spokane) [Corridor 258] (pdf 436 kb)
• US 2: SR 206 Jct (N. Spokane) to Idaho State Line [Corridor 259] (pdf 345 kb)
• US 2: Fairchild AFB to US 2/I-90 Jct [Corridor 240] (pdf 325 kb)
• US 2: Grant/Lincoln County Line to Fairchild AFB [Corridor 239] (pdf 287 kb)
• SR 20: SR 211 Jct to US 2 Jct (Newport) [Corridor 398] (pdf 257 kb)
• SR 20: SR 21 Jct (Republic) to US 395 Jct [Corridor 395] (pdf 268 kb)
• SR 20: SR 31 Jct to SR 211 Jct [Corridor 397] (pdf 251 kb)
• SR 20: US 395 Jct (Colville) to SR 31 Jct [Corridor 396] (pdf 253 kb)
• SR 21: SR 20 Jct (Republic) to Canadian Border [Corridor 268] (pdf 254 kb)
• SR 21: US 2 Jct (Wilbur) to SR 20 Jct (Republic) [Corridor 267] (pdf 288 kb)
• SR 21: SR 260 Jct (Kahlotus) to I-90 Jct (EB Uxing) [Corridor 400] (pdf 269 kb)
• SR 21: I-90 Jct (EB Uxing) to US 2 Jct (Wilbur) [Corridor 401] (pdf 268 kb)
• SR 23: US 195 Jct. to I-90 Jct. (Sprague) [Corridor 465] (pdf 262 kb)
• SR 23: I-90 Jct. (Sprague) to SR 28 Jct. (Harrington) [Corridor 466] (pdf 256 kb)
• SR 25: US 2 Jct (Davenport) to US 395 Jct (Kettle Falls) [Corridor 455] (pdf 292 kb)
• SR 25: US 395 Jct (Kettle Falls) to Canadian Border Crossing [Corridor 456] (pdf 261 kb)
• SR 26: US 395 Jct to US 195 Jct (Colfax) [Corridor 139] (pdf 278 kb)
• SR 27: 32nd Ave Int. (Spokane Valley) to SR 290 Jct [Corridor 441] (pdf 288 kb)
• SR 27: US 195 Jct to SR 270 Jct (SE Paradise St in Pullman) [Corridor 435] (pdf 316 kb)
• SR 27: SR 272 W Jct (Palouse) to SR 271 Jct (Oakesdale) [Corridor 437] (pdf 256 kb)
• SR 27: SR 274 Jct (Tekoa) to SR 278 Jct (Rockford) [Corridor 439] (pdf 254 kb)
• SR 27: SR 278 Jct (Rockford) to 32nd Ave Int. (Spokane Valley) [Corridor 440] (pdf 253 kb)
• SR 27: Davis Way/Olson St Int. (Pullman) to SR 272 W Jct (Palouse) [Corridor 436] (pdf 263 kb)
• SR 27: SR 271 Jct (Oakesdale) to SR 274 Jct (Tekoa) [Corridor 438] (pdf 250 kb)
• SR 28: SR 21 Jct. (Odessa) to I-90 Jct. (Davenport) [Corridor 464] (pdf 257 kb)
• SR 31: SR 20 Jct. to Canadian Border [Corridor 468] (pdf 252 kb)
• SR 41: US 2 Jct (Newport) to Idaho State Line [Corridor 447] (pdf 254 kb)
• I-90: SR 17 Jct (Moses Lake) to US 395 Jct (Ritzville) [Corridor 226] (pdf 268 kb)
• I-90: US 395 Jct (Ritzville) to SR 904 Jct (Tyler turn-off to Cheney) [Corridor 122] (pdf 263 kb)
• I-90: SR 904 Jct (Tyler-turn-off to Cheney) to US 2 Jct (turn-off Airway Heights, Spokane International Airport and Fairchild Airforce Base)(Interstate 90 West) [Corridor 120] (pdf 273 kb)
• I-90: US 2 to Sprague Ave. I/C (Interstate 90 Central) [Corridor 492] (pdf 298 kb)
• I-90: Sprague Ave. I/C to Idaho State Line (Interstate 90 East) [Corridor 493] (pdf 298 kb)
• SR 194: Snake River to SR 195 Jct (Pullman) [Corridor 432] (pdf 252 kb)
• US 195: Idaho State Line to Spangle [Corridor 238] (pdf 280 kb)
• US 195: Spangle to I-90 Jct (Spokane) [Corridor 242] (pdf 268 kb)
• SR 206: US 2 Jct to Mt. Spokane State Park [Corridor 448] (pdf 253 kb)
• SR 211: US 2 Jct to SR 20 Jct [Corridor 399] (pdf 247 kb)
• SR 231: SR 23 Jct (Sprague) to US 2 Jct [Corridor 453] (pdf 265 kb)
• SR 231: US 2 Jct (Reardan) to US 395 Jct [Corridor 454] (pdf 276 kb)
• SR 261: SR 260 Jct (Washtucna) to I-90 Jct (Ritzville) [Corridor 410] (pdf 261 kb)
• SR 263: Port of Windust to SR 260 Jct (Kahlotus) [Corridor 408] (pdf 252 kb)
• SR 270: US 195 Jct to SR 27 Jct (Pullman) [Corridor 433] (pdf 254 kb)
• SR 270: SR 27 Jct (Pullman) to Idaho State Line [Corridor 434] (pdf 314 kb)
• SR 271: SR 27 Jct (Oaksdale) to US 195 Jct [Corridor 443] (pdf 248 kb)
• SR 272: US 195 Jct (Colfax) to Idaho State Line [Corridor 442] (pdf 260 kb)
• SR 274: SR 27 Jct (Tekoa) to Idaho State Line [Corridor 444] (pdf 248 kb)
• SR 278: SR 27 Jct (Rockford) to Idaho State Line [Corridor 445] (pdf 247 kb)
• SR 290: I-90 Jct (Spokane) to Idaho State Line [Corridor 446] (pdf 385 kb)
• SR 291: Seven Mile Rd Int. to SR 231 Jct [Corridor 450] (pdf 260 kb)
• SR 291: US 2 Jct to Seven Mile Rd Int. [Corridor 449] (pdf 308 kb)
• SR 292: SR 231 Jct. (Springdale) to US 395 Jct. (Loon Lake) [Corridor 467] (pdf 252 kb)
• US 395: Hatch Rd Jct (N. Spokane) to Canadian Border [Corridor 237] (pdf 290 kb)
• US 395 North Spokane Corridor: I-90 to Hatch Rd [Corridor 491] (pdf 293 kb)
• SR 902: I-90 Jct (W Salnave Rd) to I-90 Jct (W Medical Lake Rd) [Corridor 451] (pdf 268 kb)
• SR 904: I-90 Jct (Tyler) to I-90 Jct (4 Lakes Rd) [Corridor 452] (pdf 262 kb)

North Central Region

• US 2: Gold Bar to US 2 & US 97 Interchange (Big Y) [Corridor 229] (pdf 406 kb)
• US 2: US 2/US 97 Jct (Big Y) to US 2/US 97 Jct (Orondo) [Corridor 228] (pdf 217 kb)
• US 2: US 97 Jct (Orondo) to Lincoln County Line [Corridor 232] (pdf 230 kb)
• SR 17: I-90 Jct (Moses Lake) to US 97 Jct (Brewster) [Corridor 264] (pdf 249 kb)
• SR 17: US 395 Jct (Mesa) to I-90 Jct (Moses Lake) [Corridor 263] (pdf 227 kb)
• SR 20: Diablo Gate to Early Winters Creek (Seasonal Closure Area) [Corridor 282] (pdf 201 kb)
• SR 20: Early Winters Creek to SR 153 Jct (Twisp) [Corridor 392] (pdf 211 kb)
• SR 20: SR 153 Jct (Twisp) to US 97 Jct (Okanogan) [Corridor 393] (pdf 226 kb)
• SR 20: US 97 Jct (Tonasket) to SR 21 Jct (Republic) [Corridor 394] (pdf 219 kb)
• SR 24: SR 243 Jct to SR 26 Jct (Othello) [Corridor 366] (pdf 207 kb)
• SR 26: I-90 Jct (Vantage) to US 395 Jct (N. of Connell) [Corridor 140] (pdf 238 kb)
• SR 28: East Wenatchee Jct. 2/97 to SR 17 Jct (Soap Lake) [Corridor 227] (pdf 344 kb)
• SR 28: SR 17 Jct. (Soap Lake) to SR 21 Jct. (Odessa) [Corridor 463] (pdf 224 kb)
• I-90: I-82 Jct (Ellensburg Vicinity) to SR 17 Jct (Moses Lake) [Corridor 225] (pdf 251 kb)
• US 97AR: US 2 Jct to US 97 Jct [Corridor 354] (pdf 217 kb)
• US 97: SR 970 Jct (Lauderdale Jct) to US 2 Jct (Peshastin) [Corridor 231] (pdf 214 kb)
• US 97: US 2 Jct (Orondo) to Canadian Border [Corridor 230] (pdf 245 kb)
• SR 150: Manson to US 97A Jct (Chelan) [Corridor 356] (pdf 212 kb)
• SR 150: US 97A Jct (Chelan) to US 97 Jct [Corridor 357] (pdf 212 kb)
• SR 153: US 97 Jct (Pateros) to SR 20 Jct [Corridor 358] (pdf 218 kb)
• SR 155: Coulee Dam to US 97 Jct (Omak) [Corridor 362] (pdf 246 kb)
• SR 155: US 2 Jct (Coulee City) to Grand Coulee [Corridor 361] (pdf 217 kb)
• SR 170: SR 17 Jct to Warden [Corridor 404] (pdf 213 kb)
• SR 171: I-90 Jct to SR 17 Jct (Moses lake) [Corridor 406] (pdf 252 kb)
• SR 172: US 2 Jct to SR 17 Jct [Corridor 359] (pdf 208 kb)
• SR 173: SR 17 Jct (Bridgeport) to US 97 Jct (Brewster) [Corridor 430] (pdf 228 kb)
• SR 174: SR 17 Jct to SR 21 Jct (Wilbur) [Corridor 360] (pdf 233 kb)
• SR 207: SR 2 Jct (Coles Corner) to Wenatchee River [Corridor 352] (pdf 202 kb)
• SR 215: US 20 Jct (Okanogan) to US 97 Jct (Omak) [Corridor 407] (pdf 239 kb)
• SR 243: SR 24 Jct (Vernita) to SR 26 Jct [Corridor 365] (pdf 248 kb)
• SR 262: SR 26 Jct to SR 17 Jct [Corridor 364] (pdf 210 kb)
• SR 281: I-90 Jct (George) to SR 28 Jct (Quincy) [Corridor 142] (pdf 211 kb)
• SR 282: SR 28 Jct to SR 17 Jct (Ephrata) [Corridor 405] (pdf 211 kb)
• SR 283: SR 281 Burke Spur Jct (George) to SR 28 Jct [Corridor 363] (pdf 205 kb)
• SR 285: SR 28 Jct to US 2 Jct [Corridor 353] (pdf 538 kb)
• SR 971: US 97A Jct (Navarre Coulee) to US 97A Jct (Lake Chelan) [Corridor 355] (pdf 212 kb)

Northwest Region ​

• US 2: I-5 Jct (Everett) to Gold Bar [Corridor 170] (pdf 506 kb)
• I-5: Cook Rd Jct (Burlington) to SR 11 Jct (Bellingham) [Corridor 483] (pdf 215 kb)
• I-5: Tacoma to I-405 Jct (Tukwila) [Corridor 494] (pdf 447 kb)
• I-5: I-405 Jct (Tukwila) to I-90 Jct (Seattle) [Corridor 495] (pdf 634 kb)
• I-5: I-90 Jct (Seattle) to US 2 Jct (Everett) [Corridor 496] (pdf 530 kb)
• I-5: SR 11 Jct (Bellingham) to SR 548 Jct (Ferndale) [Corridor 287] (pdf 408 kb)
• I-5: US 2 Jct (Everett) to Arlington [Corridor 497] (pdf 540 kb)
• I-5 & SR 543: I-5/SR 543 Jct (Blaine) to Canadian Border [Corridor 289] (pdf 260 kb)
• I-5: SR 530 Jct (Arlington) to SR 534 Jct (Conway) [Corridor 482] (pdf 197 kb)
• I-5: SR 534 Jct (Conway) to Cook Rd Jct (Burlington) [Corridor 280] (pdf 267 kb)
• I-5: SR 548 Jct (Ferndale) to S. Blaine Jct [Corridor 286] (pdf 255 kb)
• SR 9: SR 522 Jct (Woodinville) to SR 530 Jct (Arlington) [Corridor 276] (pdf 439 kb)
• SR 9: SR 20 Jct (Sedro-Woolley) to SR 542 Jct (Deming) [Corridor 274] (pdf 267 kb)
• SR 9 & SR 534: SR 530 Jct (Arlington) to SR 20 Jct (Sedro-Woolley) & I-5 Jct (Conway) [Corridor 273] (pdf 277 kb)
• SR 9 & SR 544: SR 542 Jct (Deming) and SR 539 Jct to SR 546 Jct [Corridor 277] (pdf 265 kb)
• SR 11: I-5 Jct (N Burlington) to 12th St at Old Fairhaven Pkwy (Bellingham) [Corridor 271] (pdf 272 kb)
• SR 11: 12th St at Old Fairhaven Pkwy (Bellingham) to I-5 Jct (Bellingham) [Corridor 490] (pdf 277 kb)
• SR 18: SE Auburn-Black Diamond Road (Auburn) to I-90 [Corridor 507] (pdf 540 kb)
• SR 18: SR 99 (Federal Way) to SE Auburn-Black Diamond Road (Auburn) [Corridor 506] (pdf 475 kb)
• SR 20: I-5 Jct (Burlington) to Sedro-Woolley (Fruitdale Rd) [Corridor 279] (pdf 334 kb)
• SR 20: Sedro-Woolley to Diablo Gate [Corridor 281] (pdf 270 kb)
• SR 20 Spur (Anacortes)/Access to San Juan Islands [Corridor 270] (pdf 261 kb)
• SR 20: Sharpe's Corner (Anacortes Vic) to I-5 Jct (W Burlington) [Corridor 278] (pdf 326 kb)
• I-90: Cross-Lake Corridor [Corridor 510] (pdf 606 kb)
• I-90: Eastgate to Twin Falls (North Bend Vicinity) [Corridor 244] (pdf 582 kb)
• SR 92: SR 9 Jct to Granite Falls [Corridor 474] (pdf 427 kb)
• SR 96: I-5 Jct to SR 9 Jct [Corridor 470] (pdf 576 kb)
• SR 99: Spokane St (Seattle) to Everett [Corridor 502] (pdf 556 kb)
• SR 99/509: Tacoma to SR 518 Jct (SeaTac) [Corridor 499] (pdf 609 kb)
• SR 104: Dayton St. (Edmonds) to SR 522 Jct (Lake Forest Park) [Corridor 316] (pdf 570 kb)
• SR 164: SR 18 Jct (Auburn) to Academy Dr SE [Corridor 379] (pdf 486 kb)
• SR 164: Academy Dr SE to SR 410 Jct (Enumclaw) [Corridor 380] (pdf 268 kb)
• SR 167: King County (Pacific) to SR 900 [Corridor 503] (pdf 574 kb)
• SR 169: SR 164 Jct (Enumclaw) to SR 516 (Kent Kangley Rd) [Corridor 387] (pdf 481 kb)
• SR 169: SR 516 (Kent Kangley Rd) to SE Jones Rd [Corridor 388] (pdf 445 kb)
• SR 169: SE Jones Rd to I-405 (Renton) [Corridor 389] (pdf 434 kb)
• SR 181: SR 516 Jct (Kent) to I-405 (Tukwila) [Corridor 384] (pdf 424 kb)
• SR 202: 208th Ave NE to I-90 Jct (North Bend) [Corridor 461] (pdf 388 kb)
• SR 202: SR 522 Jct to 208th Ave NE [Corridor 460] (pdf 366 kb)
• SR 203: SR 202 Jct (Fall City) to US 2 Jct (Monroe) [Corridor 462] (pdf 384 kb)
• SR 204: US 2 Jct to SR 9 Jct [Corridor 471] (pdf 372 kb)
• I-405: I-5 Jct (Tukwila) to Bellevue City Center [Corridor 504] (pdf 574 kb)
• I-405: Bellevue City Center to I-5 Jct (Lynnwood) [Corridor 505] (pdf 627 kb)
• SR 410: 284th Ave SE (Enumclaw) to Mt Rainier National Park [Corridor 374] (pdf 267 kb)
• SR 509: SR 516 Jct (Des Moines) to SR 509/188th St Jct (SeaTac) [Corridor 501] (pdf 532 kb)
• SR 513: SR 520 Jct (Montlake Blvd) [Corridor 390] (pdf 431 kb)
• SR 515: SR 516 Jct to SR 900 Jct (Renton) [Corridor 383] (pdf 427 kb)
• SR 516: SR 509 Jct (Des Moines) to SR 169 Jct (Maple Valley) [Corridor 148] (pdf 511 kb)
• SR 518: SR 509 Jct to I-5 Jct (Tukwila) [Corridor 382] (pdf 418 kb)
• SR 519: I-90 Jct to Seattle Ferry Terminal [Corridor 477] (pdf 327 kb)
• SR 520: I-405 Jct (Bellevue) to SR 202 Jct (Redmond Way) [Corridor 246] (pdf 443 kb)
• SR 520: Cross-Lake Corridor [Corridor 511] (pdf 374 kb)
• SR 522: I-5 Jct (Seattle) to I-405 Jct (Bothell) [Corridor 508] (pdf 550 kb)
• SR 522: I-405 Jct (Woodinville) to US 2 Jct (Monroe) [Corridor 509] (pdf 400 kb)
• SR 523: SR 99 Jct to SR 522 Jct (Lake City Way) [Corridor 391] (pdf 494 kb)
• SR 524: SR 104 Jct (Edmonds) to SR 99 Jct [Corridor 457] (pdf 466 kb)
• SR 524: SR 99 Jct to SR 527 Jct [Corridor 458] (pdf 489 kb)
• SR 524: SR 527 Jct to SR 522 Jct (Paradise Lake Rd) [Corridor 459] (pdf 527 kb)
• SR 525/SR 20: Clinton to Sharpe's Corner [Corridor 262] (pdf 513 kb)
• SR 525: I-5 to Mukilteo Ferry Terminal [Corridor 489] (pdf 401 kb)
• SR 526: SR 525 Jct (Mukilteo) to I-5 [Corridor 269] (pdf 427 kb)
• SR 527: I-405 Jct to I-5 Jct [Corridor 469] (pdf 597 kb)
• SR 528: I-5 Jct to SR 9 Jct [Corridor 473] (pdf 689 kb)
• SR 529: I-5 to SR 528 Jct [Corridor 472] (pdf 619 kb)
• SR 530: I-5 Jct to SR 9 Jct (Arlington) [Corridor 283] (pdf 478 kb)
• SR 530: SR 9 Jct (Arlington) to SR 20 Jct (Rockport) [Corridor 284] (pdf 264 kb)
• SR 531: Wenberg County Park to SR 9 Jct (Arlington) [Corridor 475] (pdf 465 kb)
• SR 532: Camano Island to I-5 Jct (Stanwood) [Corridor 476] (pdf 310 kb)
• SR 536: SR 20 Jct to I-5 Jct (Mt Vernon) [Corridor 296] (pdf 257 kb)
• SR 538: I-5 Jct (Mount Vernon) to SR 9 Jct (E. Mount Vernon) [Corridor 292] (pdf 264 kb)
• SR 539: I-5 Jct (Bellingham) to Canadian Border [Corridor 288] (pdf 522 kb)
• SR 542: I-5 Jct (Bellingham) to SR 9 Jct (Deming) [Corridor 480] (pdf 349 kb)
• SR 542: SR 9 Jct (Deming) to Artist Point [Corridor 272] (pdf 259 kb)
• SR 546/SR 9: SR 546/SR 539 Jct to SR 9 to Canadian Border [Corridor 248] (pdf 308 kb)
• SR 547: SR 542 Jct (Kendall) to SR 9 Jct (Sumas) [Corridor 275] (pdf 257 kb)
• SR 548: Grandview/Blaine Rd Jct to I-5 Jct (Blaine) [Corridor 290] (pdf 254 kb)
• SR 548: I-5 Jct (Ferndale) to Blaine Rd (BP Refinery) [Corridor 481] (pdf 175 kb)
• SR 599/SR 99: I-5 Jct (Tukwila) to Spokane St (Seattle) [Corridor 500] (pdf 437 kb)
• SR 900: I-5 Jct to I-405 Jct (Renton) [Corridor 385] (pdf 421 kb)
• SR 900: I-405 Jct (Renton) to I-90 Jct (Issaquah) [Corridor 386] (pdf 410 kb)

Olympic Region ​

• SR 3: US 101 Jct (Shelton) to Bremerton (Lake Flora Rd) [Corridor 200] (pdf 407 kb)
• SR 3: Mason/Kitsap Co Line vic (Lake Flora Rd) to SR 16 Jct (Gorst) [Corridor 205] (pdf 464 kb)
• SR 3: SR 16 Jct (Gorst) to SR 305 Jct (Poulsbo vicinity) [Corridor 206] (pdf 540 kb)
• SR 3: SR 305 Jct (Poulsbo vicinity) to SR 104 Jct (Hood Canal Bridge) [Corridor 207] (pdf 455 kb)
• I-5: Thurston Co Line to SR 121 Jct (Tumwater) [Corridor 256] (pdf 221 kb)
• I-5: Tumwater to Tacoma (I-5 Tumwater to Arlington: South) [Corridor 484] (pdf 868 kb)
• SR 7: SR 706 Jct to SR 702 Jct [Corridor 341] (pdf 261 kb)
• SR 7: SR 702 Jct to 260th St E [Corridor 342] (pdf 261 kb)
• SR 7: 260th St E to I-5 (Tacoma) [Corridor 343] (pdf 545 kb)
• SR 8: US 12 Jct (Elma) to US 101 Jct [Corridor 305] (pdf 213 kb)
• US 12: SR 8 Jct (Elma) to I-5 Jct (Grand Mound) [Corridor 204] (pdf 269 kb)
• US 12: US 101 Jct (Aberdeen) to SR 8 Jct (Elma) [Corridor 203] (pdf 345 kb)
• SR 16: I-5 Jct (Tacoma) to SR 3 Jct (Gorst) [Corridor 208] (pdf 839 kb)
• SR 19/20/116: West Access to WSF (Port Townsend) [Corridor 209] (pdf 326 kb)
• US 101: Cosmopolis to Hoquiam [Corridor 211] (pdf 316 kb)
• US 101: SR 102 Jct (Shelton) to I-5 Jct (Tumwater/Olympia) [Corridor 215] (pdf 797 kb)
• US 101: SR 104 Jct (Port Ludlow vicinity) to SR 102 Jct (Shelton) [Corridor 214] (pdf 245 kb)
• US 101/SR 104/SR 117: US 101 Jct at SR 112 to SR 104 Jct at SR 3 [Corridor 213] (pdf 723 kb)
• US 101: Hoquiam to SR 112 Jct (Lower Elwha vicinity) [Corridor 212] (pdf 235 kb)
• SR 102: Washington State Corrections Center to US 101 Jct (Shelton Vic) [Corridor 307] (pdf 204 kb)
• SR 104/SR 307: West Access to WSF (Kingston Ferry Terminal) [Corridor 216] (pdf 676 kb)
• SR 105: US 101 Jct (Raymond) to US 101 Jct (South Aberdeen) [Corridor 299] (pdf 226 kb)
• SR 106: US 101 Jct to SR 3 Jct (Belfair) [Corridor 309] (pdf 219 kb)
• SR 107: US 101 Jct to US 12 Jct (Montesano) [Corridor 298] (pdf 217 kb)
• SR 108: SR 8 Jct (McCleary) to US 101 Jct (Kamilche) [Corridor 306] (pdf 212 kb)
• SR 109/SR 115: SR 101 Jct (Hoquiam) to Quinault Indian Reservation & Ocean Shores [Corridor 217] (pdf 234 kb)
• SR 110: US 101 Jct (Forks) to La Push/Mora (Access to Quileute Indian Reservation) [Corridor 297] (pdf 210 kb)
• SR 112/113: Port Angeles to Neah Bay [Corridor 218] (pdf 221 kb)
• SR 119: US 101 Jct (Hoodsport) to Lake Cushman [Corridor 308] (pdf 207 kb)
• SR 121: I-5 Jct (Maytown) to I-5 Jct (Tumwater Vic) [Corridor 318] (pdf 276 kb)
• SR 160: SR 16 Jct to Southworth Ferry Terminal [Corridor 222] (pdf 287 kb)
• SR 161: SR 7 Jct (Eatonville vic.) to Graham City Limits (vic. 264th St) [Corridor 219] (pdf 216 kb)
• SR 163: SR 16 Jct to Point Defiance (Vashon Ferry Terminal) [Corridor 317] (pdf 530 kb)
• SR 161: Graham City Limits (vic. 264th St) to SR 18 Jct (Federal Way) [Corridor 220] (pdf 658 kb)
• SR 162: SR 410 Jct (Sumner) to SR 165 Jct [Corridor 346] (pdf 430 kb)
• SR 165: Mt Rainier National Park Boundary to SR 410 Jct (Buckley) [Corridor 347] (pdf 299 kb)
• SR 166: SR 16 Jct (Gorst Vic) to East Port Orchard City Limits [Corridor 312] (pdf 472 kb)
• SR 167/SR 509: Gateway Corridor (South) [Corridor 339] (pdf 701 kb)
• SR 300: Belfair State Park to SR 3 Jct (Belfair) [Corridor 310] (pdf 312 kb)
• SR 302: SR 3 Jct to SR 16 Jct [Corridor 311] (pdf 419 kb)
• SR 303: SR 304 Jct (Bremerton) to SR 3 Jct (Silverdale) [Corridor 314] (pdf 583 kb)
• SR 304: West Access to WSF (SR 3/SR 304 Jct to Bremerton Ferry Terminal) [Corridor 223] (pdf 495 kb)
• SR 305: West Access to WSF (SR 3 to Bainbridge Ferry Terminal) [Corridor 221] (pdf 492 kb)
• SR 308: SR 3 Jct to Keyport [Corridor 315] (pdf 325 kb)
• SR 310: SR 3 Jct to SR 304 Jct [Corridor 313] (pdf 398 kb)
• SR 410: SR 167 Jct (Sumner) to 284th Ave SE Jct (Enumclaw) [Corridor 373] (pdf 724 kb)
• SR 507: Big Hanaford Rd to Old Hwy 99 [Corridor 334] (pdf 254 kb)
• SR 507: Old Hwy 99 to SR 510 Jct (Yelm) [Corridor 335] (pdf 466 kb)
• SR 507: SR 510 Jct (Yelm) to SR 7 Jct (Spanaway vic) [Corridor 338] (pdf 281 kb)
• SR 510: I-5 Jct to SR 507 (Yelm) [Corridor 336] (pdf 268 kb)
• SR 512: Tacoma to SR 167 (Puyallup) [Corridor 498] (pdf 399 kb)
• SR 702: SR 507 Jct to SR 7 Jct [Corridor 337] (pdf 324 kb)
• SR 704: Cross-Base Hwy [Corridor 345] (pdf 316 kb)
• I-705: SR 7/I-5 Jct to Schuster Parkway [Corridor 344] (pdf 455 kb)
• SR 706: SR 7 Jct to Mt Rainier National Park Entrance [Corridor 348] (pdf 297 kb)

South Central Region ​

• SR 10: SR 970 Jct (Teanaway Junction) to US 97 Jct [Corridor 370] (pdf 213 kb)
• US 12: Naches to I-82 Jct. (Yakima) [Corridor 488] (pdf 237 kb)
• US 12: SR 123 Jct to Naches [Corridor 487] (pdf 229 kb)
• US 12: SR 124 Jct (Pasco) to Idaho Border [Corridor 255] (pdf 247 kb)
• SR 22: I-82 Jct (Zillah) to I-82 Jct (Prosser) [Corridor 423] (pdf 279 kb)
• SR 24: I-82 Jct (Yakima) to SR 243 Jct [Corridor 367] (pdf 324 kb)
• I-82: I-90 Jct (Ellensburg) to Selah Gap [Corridor 113] (pdf 251 kb)
• I-82: Selah Gap to Union Gap [Corridor 512] (pdf 231 kb)
• I-82: Union Gap to Oregon Border (Umatilla) [Corridor 513] (pdf 255 kb)
• I-90: Twin Falls (North Bend Vicinity) to I-82 Jct (Ellensburg) [Corridor 245] (pdf 237 kb)
• US 97: SR 22 Jct (Toppenish) to I-82 Jct (Union Gap) [Corridor 260] (pdf 280 kb)
• US 97: I-90 Jct (Ellensburg) to SR 970 Jct (Virden) [Corridor 422] (pdf 304 kb)
• SR 124: US 12 Jct (Pasco) to US 12 Jct (Waitsburg) [Corridor 414] (pdf 222 kb)
• SR 125: Oregon State Line to US 12 Jct (US 12 Uxing) [Corridor 415] (pdf 215 kb)
• SR 125: US 12 Jct (US 12 Uxing) to SR 124 Jct [Corridor 417] (pdf 212 kb)
• SR 127: US 12 Jct to SR 26 Jct [Corridor 411] (pdf 209 kb)
• SR 128: US 12 Jct to Idaho State Line [Corridor 421] (pdf 213 kb)
• SR 129: Oregon State Line to 1st St/Washington St Int. (Asotin) [Corridor 418] (pdf 211 kb)
• SR 129: 1st St/Washington St Int. (Asotin) to US 12 Jct (Clarkston) [Corridor 419] (pdf 267 kb)
• I-182/US 12: I-82 Jct (Richland) to US 395 Jct (Pasco) [Corridor 235] (pdf 272 kb)
• SR 221: SR 14 Jct to SR 22 Jct (Prosser) [Corridor 427] (pdf 256 kb)
• SR 223: SR 22 Jct to I-82 Jct (Granger) [Corridor 424] (pdf 294 kb)
• SR 224: I-82 Jct (Benton City) to SR 240 Jct (Richland) [Corridor 428] (pdf 288 kb)
• SR 225: SR 224 Jct (Benton City) to SR 240 Jct [Corridor 429] (pdf 211 kb)
• SR 240: SR 24 Jct (Vernita) to US 395 Jct (Tri-Cities) [Corridor 138] (pdf 256 kb)
• SR 241: I-82 Jct (Sunnyside) to SR 24 Jct [Corridor 426] (pdf 255 kb)
• SR 241: SR 22 Jct (Mabton) to I-82 Jct (Sunnyside) [Corridor 425] (pdf 221 kb)
• SR 260: SR 17 Jct to US 395 Jct (Connell) [Corridor 402] (pdf 209 kb)
• SR 260: US 395 Jct (Connell) to SR 26 Jct (Washtucna) [Corridor 403] (pdf 217 kb)
• SR 261: US 12 Jct to SR 260 Jct [Corridor 409] (pdf 212 kb)
• US 395: I-82 Jct (Kennewick) to I-182 Jct (Pasco) [Corridor 265] (pdf 313 kb)
• US 395: I-182 Jct (Pasco) to I-90 (Ritzville) [Corridor 266] (pdf 239 kb)
• SR 397: Kennewick ECL to SR 182 Jct [Corridor 413] (pdf 223 kb)
• SR 397: I-82 Jct to Kennewick ECL [Corridor 412] (pdf 218 kb)
• SR 410: Mt Rainier National Park to near Morse Creek (Season Closure Area) [Corridor 375] (pdf 203 kb)
• SR 410: near Morse Creek to US 12 Jct [Corridor 376] (pdf 255 kb)
• SR 730: Oregon State Line to US 12 Jct [Corridor 431] (pdf 208 kb)
• SR 821: I-82 Jct (Selah) to I-82 Jct (Ellensburg) [Corridor 371] (pdf 238 kb)
• SR 823: US 12 Jct (Selah) to SR 821 Jct [Corridor 372] (pdf 286 kb)
• SR 903: Bullfrog Rd to Forest Boundary [Corridor 369] (pdf 214 kb)
• SR 903: SR 970 Jct (Cle Elum) to Bullfrog Rd [Corridor 368] (pdf 218 kb)
• SR 906: Snoqualmie Pass Access [Corridor 381] (pdf 210 kb)
• SR 970: I-90 Jct (Cle Elum) to US 97 Jct [Corridor 236] (pdf 209 kb)

Southwest Region ​

• SR 4/SR 409: US 101 Jct to SR 432 Jct (W Longview) [Corridor 294] (pdf 230 kb)
• SR 4/SR 432/SR 433: SR 4/SR 432 Jct to I-5 Jct (Kelso) [Corridor 295] (pdf 328 kb)
• I-5: I-205 Jct (Salmon Creek) to Thurston Co Line [Corridor 252] (pdf 248 kb)
• I-5: Columbia River to I-205 Jct (Salmon Creek) [Corridor 251] (pdf 297 kb)
• SR 7: US 12 Jct (Morton) to SR 706 Jct (Elbe) [Corridor 340] (pdf 218 kb)
• SR 6: US 101 Jct (Raymond) to I-5 Jct (Chehalis) [Corridor 304] (pdf 248 kb)
• US 12: I-5 Jct (Napavine vic) to SR 123 Jct (Packwood) [Corridor 253] (pdf 242 kb)
• SR 14: I-5 Jct (Vancouver) to Washougal East City Limits [Corridor 130] (pdf 410 kb)
• SR 14: US 97 Jct. (Maryhill) to I-82 Jct. (Plymouth) [Corridor 129] (pdf 231 kb)
• SR 14: Washougal to US 97 Jct (Maryhill) [Corridor 131] (pdf 230 kb)
• US 97: Oregon State Line to SR 22 Jct (Toppenish) [Corridor 261] (pdf 248 kb)
• US 101/SR 100: Astoria Bridge to Cosmopolis [Corridor 210] (pdf 235 kb)
• SR 103: US 101 to Leadbetter Pt State Park [Corridor 300] (pdf 210 kb)
• SR 122: US 12 Jct (Silver Creek) to US 12 Jct (Mossyrock) [Corridor 331] (pdf 213 kb)
• SR 123: US 12 Jct (Packwood Vic) to SR 410 Jct (Seasonal Closure Area) [Corridor 349] (pdf 205 kb)
• SR 131: US 12 Jct to Gifford Pinchot National Forest Boundary [Corridor 350] (pdf 202 kb)
• SR 141: SR 14 Jct (Bingen) to Skamania County Line [Corridor 351] (pdf 219 kb)
• SR 142: SR 14 Jct (Lyle) to US 97 Jct (Goldendale) [Corridor 377] (pdf 222 kb)
• US 197: Oregon Border to SR 14 Jct (Dallesport) [Corridor 378] (pdf 221 kb)
• I-205: Columbia River to I-5 Jct (Salmon Creek) [Corridor 224] (pdf 231 kb)
• SR 401: US 101 Jct (Columbia River) to SR 4 Jct (Naselle) [Corridor 301] (pdf 213 kb)
• SR 411: SR 432 Jct (Longview) to I-5 Jct (Castle Rock) [Corridor 302] (pdf 228 kb)
• SR 500: 162th/4th Plain (Vancouver) to NE 3rd St (Camas) [Corridor 321] (pdf 205 kb)
• SR 500: I-5 Jct (Vancouver) to 162nd/4th Plain [Corridor 147] (pdf 329 kb)
• SR 500: NE 3rd St to SR 14 Jct (Camas) [Corridor 322] (pdf 217 kb)
• SR 501: I-5 Jct (Vancouver) to Ridgefield National Wildlife Refuge [Corridor 319] (pdf 222 kb)
• SR 501: Ridgefield (N. Main St) to I-5 Jct [Corridor 320] (pdf 214 kb)
• SR 502: I-5 Jct to SR 503 Jct (Battle Ground) [Corridor 323] (pdf 251 kb)
• SR 503: SR 500 Jct (Vancouver) to NE 244th St/NW 25th St Jct (Battle Ground) [Corridor 324] (pdf 273 kb)
• SR 503: NE 244th St Jct (Battle Ground) to I-5 Jct (Woodland) [Corridor 325] (pdf 226 kb)
• SR 504: I-5 Jct to Johnston Ridge [Corridor 329] (pdf 226 kb)
• SR 505: SR 603 Jct (Winlock) to SR 504 Jct [Corridor 330] (pdf 218 kb)
• SR 506: Ryderwood to I-5 Jct [Corridor 303] (pdf 213 kb)
• SR 507: I-5 Jct (Centralia) to Big Hanaford Rd [Corridor 333] (pdf 219 kb)
• SR 508: I-5 Jct (Napavine) to SR 7 Jct (Morton) [Corridor 332] (pdf 220 kb)

Contact:

For questions regarding specific corridors, please refer to the last page of the corresponding Corridor Sketch Summary (pdf link) for contact information.