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Appendix A: Figures

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Appendix A: Figures Appendix A: Figures 530 Bellingham Suiattle River Mountain Loop Highway uam r 5 ag ish Rive N ll or t i th Fork S Everett Spokane Seattle 405 Darrington 90 90 705 90 k e 90 e r C 82 5 k c 82 End of Study Corridor la Yakima B MP 50.87 82 82 182 B o u ld 50 e r R i ve r S au k R iv e Boulder River r Wilderness End of Gravel Section MP 44.65 45 White Chuck River Goodman Creek k e k e e r e r C C y h h p c k r t e u u S S re D o M ou uth C th For r F k C a Glacier Peak o an le rk yo C Canyon Creek n C Wilderness S ree ti k l l a 40 g u a m i s h Mount Baker-Snoqualmie National Forest R i reek v kull C e S r Beginning of Study Corridor County Bridge #102 k MP 10.76 e e r D C e l e a r o orth Fork C C N Sau k re Bedal k e e k R k e iv e e r e Benson Creek r r r C e k C v e r Granite Falls n i e e e Verlot r t v R r a C a k 15 e e M u B g k a d e S k e e 20 Silverton r r 92 e 25 C k 35 d ry r l e r r e o k E P C C e F h l e S o r ou h c e th t w C B p Fo u i r rk c e m S o e e tilla h d z k H gu S C a t a e i m l ish e r e River r e C e w C r k e h k e c c k S u k B Bla e c e k r Cr Henry M. Jackson eek C n Wilderness a Elliott Creek m d r a o B Beginning of Gravel Section Barlow MP 30.68 Pass 30 Date: 7/19/2018Date: Path: F:\highways\FHWA\17500005_wa-2001_Mountain_Loop_Feasibility_Study\GIS\FigureA1_MtLoopHwy_StudyArea.mxd WSDOT, Snohomish County, US Department of Agriculture, US Department of Forestry, US Geological Society, Washington Department of Natural Resources Figure A.1 Milepost National Forest Study Area City Limit Wilderness Area Mountain Loop Highway River/Stream Mountain Loop Hwy (Paved) Miles Feasibility Study 0 0.5 1 2 Roads Mountain Loop Hwy (Unpaved) Snohomish County, Washington 530 Suiattle River N o r t River h h F s ork S i tillagua m Darrington r e v i R k u a S 654 50 Boulder River Wilderness 45 Wh ite Chuck River 656 655 S a u k R Glacier Peak iv e r Wilderness 40 Mount Baker-Snoqualmie National Forest County Bridge #102 ti k S lla North Fork or g ish Sau F uam Rive Bedal k uth r 474 Riv So er 538 469 Granite Falls 556 Verlot 670 497 15 20 Silverton 463 92 547 576 25 35 587 537 658 r ive R 620 562 551 k au S rk o F th u o 464 S 544 Henry M. Jackson Wilderness 465 Barlow Pass 30 Date: 7/24/2018Date: Path: F:\highways\FHWA\17500005_wa-2001_Mountain_Loop_Feasibility_Study\GIS\FigureA2_MtLoopHwy_BridgeGR.mxd WSDOT, Snohomish County, US Department of Agriculture, US Department of Forestry, US Geological Society, Washington Department of Natural Resources Figure A.2 Milepost National Forest Culvert Bridge Condition (ID) Bridge, Culvert, and Guardrail Locations City Limit Wilderness Area Guardrail 655 Good 655 Fair River/Stream Mountain Loop Hwy (Paved) Mountain Loop Highway 655 Poor Miles Roads Mountain Loop Hwy (Unpaved) Feasibility Study 0 0.5 1 2 Snohomish County, Washington 530 Suiattle River N o r t River h h F s ork S i tillagua m Darrington r e v i R k u a S 339 50 298 Boulder River Wilderness 45 Wh ite Chuck River 257 156 S a u k R Glacier Peak iv e r Wilderness 40 Mount Baker-Snoqualmie National Forest County Bridge #102 Still orth F rk ag N ork S Fo uamish Ri 1718 auk th ver Bedal R Sou 1767 ive 1577 r Granite Falls 643 Verlot 664 1244 15 20 Silverton 92 915 915 25 35 985 833 r 647 ive 1013 R 749 389 k au S rk o F th u o S 236 Henry M. Jackson Wilderness Barlow Pass 224 30 Date: 7/19/2018Date: Path: F:\highways\FHWA\17500005_wa-2001_Mountain_Loop_Feasibility_Study\GIS\FigureA4_MtLoopHwy_TrafficVol.mxd WSDOT, Snohomish County, US Department of Agriculture, US Department of Forestry, US Geological Society, Washington Department of Natural Resources Figure A.3 Existing Traffic Volumes Milepost National Forest (Year of Counts) Existing Traffic Volumes City Limit Wilderness Area 2011 2013 Mountain Loop Highway River/Stream Mountain Loop Hwy (Paved) Miles 2015 Feasibility Study Roads Mountain Loop Hwy (Unpaved) 0 0.5 1 2 2017 Snohomish County, Washington Suiattle River N o r t River h h F s ork S i tillagua m 530 Darrington r e v i R k u a S 50 Boulder River Wilderness 45 Wh ite Chuck River S a u k R Glacier Peak iv e r Wilderness 40 Mount Baker-Snoqualmie National Forest County Bridge #102 ti k S lla North Fork or g ish Sau F uam Rive Bedal k uth r Riv So er Granite Falls Verlot 15 20 Silverton 92 25 35 r ive R k au S rk o F th u o S Henry M. Jackson Wilderness Barlow Pass 30 Date: 7/19/2018Date: Path: F:\highways\FHWA\17500005_wa-2001_Mountain_Loop_Feasibility_Study\GIS\FigureA5_MtLoopHwy_SpeedPassingZones.mxd WSDOT, Snohomish County, US Department of Agriculture, US Department of Forestry, US Geological Society, Washington Department of Natural Resources Figure A.4 Milepost National Forest Speed Speed and Passing Zone Locations City Limit Wilderness Area 25 mph 35 mph River/Stream Mountain Loop Hwy (Unpaved) Mountain Loop Highway 45 mph Feasibility Study Miles Roads Passing Zones Unknown/Not Posted 0 0.5 1 2 Snohomish County, Washington Suiattle River N o r t Riverm r h h gua ish ive F s lla R orNk i i oSr ti mt thllaFgourka S 530 Darrington r e v i R k u a S 50 3 Fixed Object Boulder River Wilderness 2 1 1 1 45 Wh ite Chuck River 2 Fixed Object 1 S a u k R Glacier Peak iv e r Wilderness 40 Mount Baker-Snoqualmie National Forest County Bridge #102 ti Roll Over k S lla North Fork or g ish R Sau F uam ive Bedal k uth r 1 Riv So 3 er 3 Granite Falls 2 Verlot 1 15 Fixed Object 1 2 20 Silverton 92 1 1 25 35 5 7 2 2 1 r Fixed Object 1 1 1 1 ive 1 1 R 2 k 3 au S rk Rear End o F th u o S Henry M. Jackson 1 Wilderness Barlow Pass 30 Date: 7/19/2018Date: Path: F:\highways\FHWA\17500005_wa-2001_Mountain_Loop_Feasibility_Study\GIS\FigureA6_MtLoopHwy_Safety.mxd WSDOT, Snohomish County, US Department of Agriculture, US Department of Forestry, US Geological Society, Washington Department of Natural Resources Figure A.5 Milepost National Forest Number of Crashes Crash Trends City Limit Wilderness Area 1 Mountain Loop Highway Crash Type Severe Crash River/Stream Mountain Loop Hwy (Paved) 2 - 4 Miles Feasibility Study 0 0.5 1 2 Roads Mountain Loop Hwy (Unpaved) 5 - 7 Crash Type Fatal Crash Snohomish County, Washington 530 Suiattle River N o r t River h h F s ork S i tillagua m Darrington r e v i R k u a S 50 Boulder River Wilderness 45 Wh ite Chuck River S a u k R Glacier Peak iv e r Wilderness 40 Mount Baker-Snoqualmie National Forest County Bridge #102 ti k S lla North Fork or g ish Sau F uam Rive Bedal k uth r Riv So er Granite Falls Verlot 15 20 Silverton 92 25 35 r ive R k au S rk o F th u o S Henry M. Jackson Wilderness Barlow Pass 30 Date: 7/19/2018Date: Path: F:\highways\FHWA\17500005_wa-2001_Mountain_Loop_Feasibility_Study\GIS\FigureA7_MtLoopHwy_OtherVulnerabilities.mxd WSDOT, Snohomish County, US Department of Agriculture, US Department of Forestry, US Geological Society, Washington Department of Natural Resources Figure A.6 Milepost National Forest Drainage/Erosion Issue Other Vulnerabilities City Limit Wilderness Area Slide Area River/Stream Mountain Loop Hwy (Paved) Steep Slope(s) Mountain Loop Highway Miles Roads Mountain Loop Hwy (Unpaved) Washout Area Feasibility Study 0 0.5 1 2 Snohomish County, Washington r Service Layer Credits: Sources: Esri, USGS, NGA, NASA, CGIAR, N e iv Robinson, NCEAS, NLS, OS, NMA, Geodatastyrelsen, Rijkswaterstaat, R Suiattle River GSA, Geoland, FEMA, Intermap and the GIS user community uk Sa uam r ag ish Rive N ll or t i th Fork S !@ 530 UV Darrington 50 49 Boulder River 48 Wilderness 47 46 White Chuck River 45 44 43 42 Sa uk R iv e r 41 Glacier Peak Wilderness 40 Mount Baker-Snoqualmie National Forest 39 38 County Bridge #102 S outh Verlot Public For 37 North Fork k St Service Center Sau illag Bedal k R uam !@ iv ish R 11 er iver Granite Falls 12 r 23 e 36 24 iv 13 R 22 k u 15 21 Silverton a UV92 14 16 S 18 25 k 35 17 20 r o 19 F th 26 u o 34 S 33 27 28 32 Henry M.
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