! ! ! ! NE 45th St ! ! ! Pend Oreille North ! ! ! ! 278 (93) ! 27 (342) ! ! ! 74 (43) 18 (135) ! ! ! E ! N ! ! e ! Pend Oreille South v ! A ! ! h t 278 (100) 30 (338) ! d ! 5 R ! 2 ! e 13 (76) ! 71 (60) l l ! ei ! ! Or ! ! NE 42nd St d ! ! NE l ! y Pen i ! a a ! E r ! W ! N T y ! t e ! i n s v a ! r ! A e m ! v l h h ! i i t ! n 5 G ! U 1 ! e Wahkiakum Lane ! k ! r ! West of u ! Overpass ! B ! ! University Bridge NE Campus Pkwy ! 262 (98) 33 (327) ! ! ! 185 (167) 107 (241) 44 (55) 23 (104) ! NE 40th St ! ! ! ! ! ! Brooklyn & ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! 60 (67) 29 (107) ! ! ! ! ! ! E ! ! ! ! ! ! ! ! ! Lincoln Way Pacific East ! ! ! N ! ! ! ! ! ! ! d ! ! ! ! v ! ! l ! C University of ! 172 (229) 126 (272) ow ! ! B B! u! li ! d ! tz rk! ! Brooklyn & ! Rd e e ! Washington R ! Gi ! k ! 111 (74) 36 (166) ! l ! m ! n a ! a! l n! ! ! o t Pacific West T! ! 5 r! s a! n ! i ! § ! ¦¨ l a ! o ! ! ! ! ! M ! ! 15th & Pacific East M ! ! 162 (175) 111 (243) ! ! ! ! ! ! ! ! ! 106 (74) 30 (160) 183 (242) ! 146 (255) ! NE Pacific St !!! ! ! ! !! ! 141 (89) 34 (226) ! ! ! E ! ! LEGEND ! N 15th & Pacific West ! ! ! e ! ! v ! Hec Ed Overpass ! ! A ! ! e 203 (233) 139 (246) !!! T-Wing Overpass Count Location k ! ! !!! 250 (102) 51 (370) la t 137 (46) 38 (203) !! s !!! a 103 (309) 197 (140) ! 100 (64) 33 (205) E ! Bicycle !!!! ! ! ! 30 (165) 58 (95) ! UNIVERSITY OF WASHINGTON BURKE-GILMAN TRAIL CORRIDOR STUDY ! ! ! ! N ! Hitchcock Overpass ! E ! Pa !! ! l Pedestrian c ! P if ! i !!!! c 175 (251) 161 (208) c ! i ! f S !! t ! i ! !! c ! ! a AM (PM) ! ! Count Volume 137 (117) 61 (126) ! P ! ! ! ! E ! ! ! ! N H ! J ! ! ! ! ! ! ! ! JULY 2011 !!!!!!!!!! Rainier Vista East Medical Direction Center 277 (118) 75 (353) Portage !!!!!!! Bay 120 (129) 58 (163) Burke Gilman Trail Rainier Vista West 237 (142) 71 (332) 109 (122) 49 (176) Montlake Bridge N NOT TO SCALE BICYCLE AND PEDESTRIAN COUNT VOLUMES - AM AND PM PEAK PERIODS EXISTING CONDITIONS \\fpse2\data2\2010Projects\SE10-0209_BurkeGilmanTrail_AltDesign\Graphics\Draft\GIS\MXD\fig0x_ped_bike_vols_lan.mxd FIGURE 1 UNIVERSITY OF WASHINGTON BURKE-GILMAN TRAIL CORRIDOR STUDY TABLE OF CONTENTS i TABLE OF CONTENTS Executive Summary ......................................................................... 1 Part V - Trail Design ....................................................................... 41 A Note About Trees Part I - Background and Policy Guidance ..................................... 5 Conceptual Approaches Scope of Study Spatial Implications of Trail Design Approaches Background Recommended Approaches for Trail Segments Burke-Gilman History Trail Surface Policy Guidance Wayfinding UW Campus Master Plan - Montlake/SR 520 Bike Path Trail Landscape Lighting Part II - Study Framework ............................................................. 13 Other Design Elements Part III - Current Conditions ......................................................... 17 Part VI - Intersection Design ........................................................ 51 Trail Segments Motorized Intersections Intersections Approaches Trail Counts Recommendations Bicycle Volumes Non-Motorized Intersections Pedestrian Volumes Approaches Comparison to Previous Counts Major Non-Motorized Intersections Future Year Forecasts Traffic Control Potential Conflict Points Recommendations Minor Non-Motorized Intersections Part IV - Level of Service Evaluation ............................................ 33 LOS Analysis Part VII - Unit Cost Estimates and Phasing ................................ 61 ... Levels of Service Unit Costing Estimates SUPLOS Results Phasing Shared Use Path LOS By Segment Implementation Guidance Shared Use LOS Conclusions Pedestrian LOS Conclusions Appendices Application of SUPLOS Methodology to Analysis of A. Trail Plan Proposed Bicycle Facility Width Comparison to Other Trails UNIVERSITY OF WASHINGTON | SvR DESIGN COMPANY JULy, 2011 UNIVERSITY OF WASHINGTON BURKE-GILMAN TRAIL CORRIDOR STUDY EXECUTIVE SUMMARY 1 EXECUTIVE SUMMARY This planning study for the Burke-Gilman Trail (Trail) on the University Phase III: Trail improvements north of Hec Edmundson (Hec of Washington (UW) campus reflects a growing awareness of the Ed) Bridge and west of 15th Avenue NE, including widening to increasing role the Trail plays as a regional, municipal and campus 8’ pedestrian path width and 12’ bicycle path width, and any transportation facility. Many changes have occurred on the UW campus necessary right-of-way assignment revisions at Pend Oreille Road. since the Trail opened in 1974, and significant changes are coming to the Trail in the immediate future. These include development of the Phase IV: Revisions to right-of-way assignments at Brooklyn University LINK Light Rail station at Husky Stadium, UW Montlake Avenue NE. Triangle, reconstruction of the Stadium itself, and construction of a new SR 520 Lake Washington Floating Bridge with a regional trail linking to This study acknowledges that improvements to the Trail may need Montlake Boulevard. City of Seattle plans envision a tripling of bicycle to be implemented in conjunction with projects. However, this study traffic city-wide by 2030, and the Trail is likely to remain a key linkage in recommends that a 20-foot buffer on either side of the existing Trail the system that will experience this growth. centerline be preserved to accommodate future changes to Trail width and alignment, and allow for connections to adjacent edge conditions. Changes in transportation service to the Montlake Triangle will change Where adjacent development occurs, grading within this buffer area Pend how pedestrians and bicyclists use the Trail to access a variety of should be done to create a maximum of 2% slope. Oreille Rd campus destinations, as well as serve to provide a regional multi-modal connection to many destinations in the Seattle area. Ultimately, the planning level concepts presented in this document reflect a minimum LOS of C for pedestrians (assuming pulsing The purpose of this study is to analyze current conditions on the Trail, loads) and a minimum LOS of B for bicycles. Recommended Trail define appropriate Levels Of Service (LOS) and growth projections improvements include separation of bicycle and pedestrian users, to 2030, and based on this information provide recommendations for with 8’ to 10’ pedestrian path width and 12’ to 14’ bicycle path improvements. Depending on the existing conditions adjacent to the width to accommodate anticipated growth in pedestrian and bicycle Trail, UW may choose to reduce the recommended LOS at particular volumes. The full build-out separated Trail width would be 28’ to 29’ in sections. The study acknowledges that these recommendations must congested areas between 15th Avenue NE and the Hec Ed Bridge and also take into consideration overall aesthetic and landscape values 24’ west of 15th Avenue NE and north of the Hec Ed Bridge. associated with the unique setting of the Trail and the University. This study recommends separation of pedestrian and bicycle traffic, traffic calming and management at key intersections (including right-of- way assignment revisions at Pend Oreille Road and Brooklyn Avenue NE), and improved access and mobility. Recommendations for general phasing and prioritization of design elements are: 15th Ave NE 15th Ave University Bridge Phase I: Widening of the Trail to 10’ pedestrian path width and Rainier Vista Hec Ed Bridge 14’ bicycle path width and vertical separation of the Trail between T-Wing Overpass and Hec Ed Bridge. Work in this section of the NE Ave rooklyn B N Trail should be done in collaboration with the Montlake Triangle Improvement Project. W E Phase II: Widening of the Trail to 10’ pedestrian path width and T-Wing Overpass 14’ bicycle path width with horizontal separation (1’-wide divider) Montlake S between T-Wing Overpass and 15th Avenue NE. Work should be done in anticipation of LINK light rail patrons. Triangle Context Map University of Washington Campus & Vicinity August 2007 UNIVERSITY OF WASHINGTON | SvR DESIGN COMPANY JULy, 2011 PART I BACKGROUND AND POLICY GUIDANCE UNIVERSITY OF WASHINGTON BURKE-GILMAN TRAIL CORRIDOR STUDY PART I: BACKGROUND AND POLICY GUIDANCE 5 SCOPE OF STUDY The scope of the University of Washington Burke-Gilman Trail Corridor PEND OREILLE Study (the Study) is to develop a conceptual plan proposal for the IMPROVEMENTS portion of the Burke-Gilman Trail (the Trail) that passes through the University of Washington’s Seattle campus from Pasadena Place NE to NE 47th Street. This study is intended to address conceptual design issues relating to both existing conditions on the Trail through the University of Washington campus, and to anticipate operational changes resulting from 1) Link Light Rail service to the University, 2) new West Campus student housing facilities; and 3) a new regional trail along a rebuilt SR-520 from the Eastside to Seattle via Montlake Boulevard NE and associated park at the Bryant Building (see Figure 1). The study is timed to coordinate with these major capital transportation projects in order to ensure the Trail is designed to be an integral element of a modern, comprehensive transportation system while also WEST CAMPUS respecting the campus’ setting and unique requirements. HOUSING The study uses traffic volume measurements and projections, as well as level of service (LOS) modeling as a foundation for a concept design that will maximize safety and efficiency for anticipated user growth, while addressing aesthetic and campus identity concerns.