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sidewalk on the 41st Street overcrossing. The existing r:'t '- ' <br /> trail width of 10 feet will be widened to 12 feet of <br /> pavement, with 2- foot and 5-foot shoulders on either e, ,, <br /> side. The alignment will follow the existing trail as closely - �..`' ; <br /> as possible, minimizing impact to the adjacent wetlands ‘.,• a ,0::' <br /> and <br /> and riverbank. Standard site distance, minimum curve :ijtrli` <br /> radii, and maximum allowable gradients to meet regional , -, <br /> trail guidelines will be accommodated in the final design. t. — ` �'s <br /> The proposed regional trail diverges from the current <br /> 1 .'•)t.' ' 'A. %-t-1:,.. i .1. ..., i: * <br /> Riverfront Trail alignment in response to the position and -..4.,-;''' "z ` -- <br /> grade changes of the new Bigelow Creek outfall. Here the A curving trestle bridge is proposed over the <br /> trail will be positioned atop a long, curving trestle bridge new Bigelow Creek outfall. <br /> spanning the stream, iri a location west of the current trail. <br /> The Trestle Bridge will make reference to the railroad <br /> trestle engineering typical of historic site train use, and will provide unique scenic opportunities at each <br /> end for interpretation: an inward view of the re-channeled creek and wetlands, and an outward view of <br /> the Snohomish River. <br /> f <br /> —_ - „, <br /> 4 Y ` t ,/ li . <br /> ir <br /> lrtF • <br /> t4l.Gc PAVED <br /> 14ETLAND'R 1• t” <br /> A CONNECTOR <br /> +. ! TRAM <br /> 1 11 WIDE PAVEU— '� F• %' CONidE%TION TO <br /> REGIONAL TR AIL SY.FSON PhD <br /> i ' �.: /_} DEVFLGPMENT <br /> .r �,/` <br /> T,� yj WERE RETIW_VIEIVOk <br /> -, — i'• FO7,1 TRESTLE APPROACH <br /> ' .. t. aTDE r- UEOR <br /> s `y/ <br /> 1 RTER?REm� wEVROR/f <br /> .1-'� 1 _ .. 7 t7 <br /> FROuTRESTIE APPijQAOI r, �` 4? _ 'J \' <br /> - - - <br /> NEl'J 7RE51LE ' t' <br /> rI / I <br /> 1 ! B--_NICU NEY.sOINT _ <br /> Z <br /> &GELCAP CREEK CHANNEL ,` <br /> AT ELEVATION 0 DR I-'Y' _ - r <br /> f AND LARDS I'AIYN f%'PR6 ¢ <br /> ex <br /> SwOHO'TI:H RIVER A. if. ; <br /> Bigelow Creek Crossing <br /> Across the Trestle Bridge, the regional trail will resume the alignment of the current Riverfront Trail as it <br /> makes its passage north along the river's edge and turns west to connect to the 41St Street <br /> overcrossing. South of the point where the Riverfront Trail makes its sharp westerly turn, an alternate <br /> alignment is proposed, shifting the trail to angle west, away from the river's edge, and then reconnect <br /> with the existing trail as it rounds the north end of the Simpson Pad. The riverbank at the trail's present <br /> location is undermined after high flow events in the river, requiring periodic trail maintenance and <br /> reconstruction. Relocation of the Riverfront Trail here will eliminate that frequent maintenance, and <br /> allow this segment of riverbank to be restored to a natural condition. <br /> Riverfront Development Public Amenities Master Plan 31 <br /> 67 <br />