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Willamette River Crossing (Portland-Milwaukie Light Rail Project)

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Dave Unsworth, TriMet Sr. Manager of Transit Development, and Guenevere Millius, Principal at SRM Architecture and Marketing, Inc.

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Willamette River Crossing (Portland-Milwaukie Light Rail Project)

  1. 1. Willamette River Transit Bridge PSU CTS Seminar January 16, 2009 Dave Unsworth, TriMet Guenevere Millius, Portland Design Commissioner, WRBAC member and SRM Architecture and Marketing
  2. 2. Willamette River Transit Bridge Today’s Agenda • Portland-Milwaukie Light Rail Project • Plans for a new Willamette River Bridge • Public Process
  3. 3. Portland-Milwaukie Light Rail Project Willamette River Transit Bridge Light Rail Project: • 11 stations – one future station (SE Harold) • 2,000 park and ride spaces • Tacoma • Park Avenue • 7.3 miles • Shared transitway • Connects to trails
  4. 4. Portland-Milwaukie Light Rail Project Willamette River Transit Bridge Light rail would: • 27,400 daily transit trips • Result in 8.2 million transit trips per year • Create more than 9,040 new jobs • Generate more than $314 million in personal income • Transit travel time savings • Increased transit mode Portland Existing light rail: • $6 billion invested near stations • 15,000 new housing units • 100,000 daily light rail trips and growing - up 3.2% from last year
  5. 5. Willamette River Transit Bridge Exciting Future Lies Ahead • 1 million new residents in region • 100,000 new jobs in this growing corridor
  6. 6. Willamette River Transit Bridge Builds Transit Capacity South Waterfront Tomorrow
  7. 7. Willamette River Transit Bridge Growing South Waterfront OHSU’s South Waterfront Master Plan with rail
  8. 8. Anchors the Innovation Quadrant Willamette River Transit Bridge
  9. 9. Willamette River Transit Bridge
  10. 10. Locally Preferred Alternative Alignment Willamette River Transit Bridge
  11. 11. Willamette River Bridges Willamette River Transit Bridge 1 2 3 4 5 Source: The Portland Bridge Book 2 1 3 4 5
  12. 12. Willamette River Transit Bridge 7 6 8 10 9 6 7 8 9 10 Source: The Portland Bridge Book Movable Bridges – 5 total Fixed Bridges – 5 total New Willamette River Bridge Willamette River Bridges
  13. 13. Willamette River Transit Bridge Created Review Teams • Willamette River Bridge Advisory Committee (WRBAC) • Working Group (technical staff and consultants)
  14. 14. Willamette River Transit Bridge
  15. 15. Willamette River Transit Bridge Willamette River Bridge Advisory Committee Bob Durgan Andersen Construction Thomas Hacker THA Architecture Art Johnson KPRR Consulting Engineers Sue Keil Portland Department of Transportation Pat Lacrosse OMSI Guenevere Millius SRM Architecture and Marketing, Inc. Karl Rohde Bicycle Transportation Alliance David Soderstrom Portland Opera Board Chuck Steinwandel Ross Island Sand and Gravel Mark Williams OHSU Rick Williams BPM Development Mike Zilis Walker & Macy Committee Chair Facilitator Mayor Vera Katz David Knowles
  16. 16. Willamette River Bridge Advisory Committee Willamette River Transit Bridge Meetings in 2008: July 8 August 8 September 16 October 8 November 13 December 11 Next meeting: February 5, 2009
  17. 17. Willamette River Transit Bridge Notes, agendas, materials and presentations from: • WRBAC • Working Group trimet.org/WRBAC
  18. 18. Willamette River Transit Bridge Vision Deliver a bridge that embodies the Portland aesthetic--functional and affordable • Aesthetic – the right bridge for the context • Function – the right bridge for the use, site and environment • Cost – the right bridge for the budget • Viable solutions must balance all three
  19. 19. Willamette River Transit Bridge Bridge Architect: Rosales + Partners With Schlaich Bergermann as Structural www.rosalespartners.com
  20. 20. Willamette River Transit Bridge Structural: HNTB With Greg DeMond as Bridge Architect www.rosalespartners.com Both as Primes
  21. 21. Engineer Team Architectural Team Stakeholder Committee Information Gathering Process Diagram Establish Bridge Design Framework Develop Range of Potential Bridge Types (Many) Screen Engineer, Architecture and Urban Design Development of Initial Viable Alternatives (Some) Screen Verify Viable of Alternatives (Few) Begin Full Public Conversation
  22. 22. Willamette River Transit Bridge The Universe of Bridge Alternatives • Trusses and Arches • Cable Supported • Movable
  23. 23. Willamette River Transit Bridge Design Parameters and Constraints Proposed Bridge Alignment from SDEIS 1720’-0”
  24. 24. Willamette River Transit Bridge Design Parameters and Constraints 4.75% 4.75% Oregon Health & Science University Downtown Portland Marquam Bridge Oregon Museum of Science & Industry Proposed Bridge Alignment ± 75’ Additional analysis on vertical clearance to occur during Preliminary Engineering
  25. 25. Willamette River Transit Bridge Design Parameters and Constraints Ross Island Bridge South Waterfront OHSU Tram 600’ CLEAR Proposed Bridge Alignment LPA included a range of spans 300’ to 780’ clear
  26. 26. Willamette River Transit Bridge Evaluation Criteria Cost Risk Fundamental Performance Architectural – Urban Context Greenway Environmental – Sustainability Bridge Operations Miscellaneous Opportunities
  27. 27. Evaluation Criteria Willamette River Transit Bridge
  28. 28. Willamette River Transit Bridge “Some” Bridge Types Wave Frame Tied Arch Through Arch Cable Stayed - 4 Cable Stayed - 2
  29. 29. Willamette River Transit Bridge Tied Arch Examples
  30. 30. View Comparison Willamette River Transit Bridge Aerial
  31. 31. View Comparison Willamette River Transit Bridge West Bank – OHSU Area
  32. 32. View Comparison Willamette River Transit Bridge West Bank – Future Greenway Trail
  33. 33. View Comparison Willamette River Transit Bridge East Bank – Greenway Trail
  34. 34. View Comparison Willamette River Transit Bridge On the Bridge
  35. 35. View Comparison Willamette River Transit Bridge On the River
  36. 36. Willamette River Transit Bridge “Few” Bridge Types Wave Frame Tied Arch Through Arch Cable Stayed - 4 Cable Stayed - 2
  37. 37. “Few” Willamette River Transit Bridge Wave Frame 2 Pier Cable Stayed 4 Pier Cable Stayed
  38. 38. Working Group Summary Willamette River Transit Bridge Wave frame Tied Arch Thru Arch Cable Stayed Cable Stayed Center-to-center Span Width 680 680 680 795 860 Cost Risk Fundamental Performance Architectural Urban Context Greenway Environmental - Sustainability Bridge Operations Miscellaneous Opportunity To Be Determined Legend High Score Moderate Score Low Score Each alternative has opportunities and challenges
  39. 39. Recent Work Willamette River Transit Bridge • Evaluated structural performance of options • Defined construction sequence • Created computer models • Analyzed for service loads • Analyzed for seismic loads
  40. 40. Willamette River Transit Bridge Recent Work • Determine member sizes and quantities • National Constructors Group – Cost bases – Cost certainty – Constructability review – Contractor’s risk assessment • J. Paul Silvestri, National Constructors Group
  41. 41. Willamette River Transit Bridge J. Paul Silvestri • Graduate of Stanford • 39 years building major heavy civil • Founded National Constructors Group in 1991 • 13 years advising transportation agencies on construction of major infrastructure projects • Numerous awards of excellence from public agencies • Published articles in Civil Engineering, Construction Methods Engineering News Record, American Segmental Bridge Institute
  42. 42. Willamette River Transit Bridge Evaluation Criteria Cost Risk Fundamental Performance Architectural – Urban Context Greenway Environmental – Sustainability Bridge Operations Miscellaneous Opportunities
  43. 43. Risks Willamette River Transit Bridge • Foundations • Material – Substructure • Material – Superstructure • Fabrication - Erection • Schedule • Design Wave Frame 2 Pier Cable Stayed 4 Pier Cable Stayed
  44. 44. Opportunities and Challenges Willamette River Transit Bridge Cable Stayed 2 Pier
  45. 45. Cable Stayed – 2 Pier Willamette River Transit Bridge Greenway Opportunity More open – no landside piers
  46. 46. Cable Stayed – 2 Pier Willamette River Transit Bridge Lifecycle cost Opportunity Low lifecycle cost - more concrete and less steel
  47. 47. Cable Stayed – 2 Pier Willamette River Transit Bridge Navigation 760’ Clear Opportunity Largest horizontal clearance
  48. 48. Cable Stayed – 2 Pier Willamette River Transit Bridge Environmental Challenge 760’ Clear Piers closest to shallow water
  49. 49. Cable Stayed – 2 Pier Willamette River Transit Bridge Navigation Challenge Lowest vertical clearance (still exceeds 75’)
  50. 50. Cable Stayed – 2 Pier Accommodation of curved spans at greenway Challenge Willamette River Transit Bridge Stay Cables – Overhead Catenary Wire
  51. 51. Opportunities and Challenges Willamette River Transit Bridge Cable Stayed 4 Pier
  52. 52. Cable Stayed – 4 Pier Willamette River Transit Bridge Lifecycle cost Opportunity Low lifecycle cost - more concrete and less steel
  53. 53. Cable Stayed – 4 Pier Willamette River Transit Bridge Risk Profile Opportunity Lowest risk profile for schedule and budget
  54. 54. Cable Stayed – 4 Pier Willamette River Transit Bridge Navigation 700’ Clear Opportunity Second largest horizontal clearance
  55. 55. Cable Stayed – 4 Pier Willamette River Transit Bridge Mode Flexibility Opportunity Accommodates various bike/ped – train/bus configurations
  56. 56. Cable Stayed – 4 Pier Willamette River Transit Bridge Greenway Challenge Landside pier closest to greenway
  57. 57. Cable Stayed – 4 Pier Willamette River Transit Bridge Greenway Challenge Widest bridge over greenway – 69’ versus 66’
  58. 58. Height Comparison Willamette River Transit Bridge South Waterfront Development
  59. 59. Willamette River Transit Bridge 300’ 250’ 200’ 150’ 100’ 50’ 0’ 125’ CS 4 – 254’ CS 2 – 277’ Height Comparison 350’ 325’ 250’ South Waterfront Wave – 120’ Tram 195’
  60. 60. Height Comparison Willamette River Transit Bridge Other Bridges
  61. 61. Comparison Willamette River Transit Bridge Steel Bridge Cable Stayed - 4 Cable Stayed - 2
  62. 62. Comparison Willamette River Transit Bridge Steel Bridge Cable Stayed - 4 Cable Stayed - 2 198’ 187’ 210’
  63. 63. Comparison Willamette River Transit Bridge Steel Bridge Cable Stayed - 4 Cable Stayed - 2 270’ 254’ 277’
  64. 64. Opportunities and Challenges Willamette River Transit Bridge Wave Frame
  65. 65. Wave Frame Willamette River Transit Bridge Innovative Opportunity Portland known for innovation: Light Rail – Streetcar – Tram
  66. 66. Wave Frame Willamette River Transit Bridge Environmental 600’ Clear Opportunity Piers closer to deeper water
  67. 67. Wave Frame Willamette River Transit Bridge Environmental Opportunity 600’ Clear Piers farther away from contaminated media
  68. 68. Wave Frame Willamette River Transit Bridge Navigation Challenge 600’ Clear Narrowest horizontal clearance
  69. 69. Wave Frame Willamette River Transit Bridge Prototype Challenge
  70. 70. Wave Frame Willamette River Transit Bridge Prototype Challenge Increase design and construction engineering costs
  71. 71. Wave Frame Willamette River Transit Bridge Prototype Challenge Increase design and construction engineering costs Bid risk • Reduced competition for steel fabrication
  72. 72. Wave Frame Willamette River Transit Bridge Steel Challenge Higher price volatility than concrete
  73. 73. Wave Frame Willamette River Transit Bridge Steel Challenge Higher price volatility than concrete Increased lifecycle costs • Weld inspections • Impact to service for recoating (painting)
  74. 74. Wave Frame Willamette River Transit Bridge Environmental Challenge Piers in contaminated media and at top of bank (riparian zone)
  75. 75. Revised Risk Summary Willamette River Transit Bridge Wave Frame 2 Pier Cable Stayed 4 Pier Cable Stayed
  76. 76. Willamette River Transit Bridge Evaluation Criteria Cost Risk Fundamental Performance Architectural – Urban Context Greenway Environmental – Sustainability Bridge Operations Miscellaneous Opportunities
  77. 77. Willamette River Transit Bridge Cost: Baseline Quantity Estimate Process Wave frame design was revised Construction methodology was revised Revised quantities were generated (all three) Design, market and construction risks were removed Contractor style estimates generated Result Baseline Quantity Estimate
  78. 78. Draft Cost Results Willamette River Transit Bridge Final Review in Process $115 – $119M Over Budget $32 – $37M $82 – $85M On Budget $89 – $93M Over Budget $7 – $11M
  79. 79. Next Steps Willamette River Transit Bridge • WRBAC – Staff to report on additional work related to future steel prices and aesthetic opportunities for cable stayed type. (February 5, 2009) • WRBAC recommendation to PMLR Steering Committee (March 12, 2009) • Additional design and process to select final bridge type (March 2009)
  80. 80. Portland-Milwaukie Light Rail Project Timeline 2008 dates unless otherwise noted May June July Aug. 2009 2010 2011 2012 2015 Publish Draft Environmental Impact Statement Adoption of the Locally Preferred Alternative Submit FTA New Starts Application FTA Preliminary Engineering Application Preliminary Engineering Final Environmental Impact Statement Final Design Full Funding Grant Agreement 9 9 9 2009 - 2010 2010 - 2011 Late 2011 July 2008 - Jan 2009 2009 - 2010 Late 2011-15 Construction Service Begins 
  81. 81. Willamette River Transit Bridge • Federal share – 60/40 – 50/50 • Metro – $72m • State - $250m • Milwaukie $5m
  82. 82. Willamette River Transit Bridge Thank you. Questions? Comments? trimet.org/pm

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