Willamette River Transit Bridge. Portland - Milwaukie Light Rail Willamette River Bridge Willamette River Bridge Advisory Committee

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1 Portland - Milwaukie Light Rail Willamette River Bridge Willamette River Bridge Advisory Committee

2 Bridge Type - Cost Vertical Clearance Bicycle Pedestrian Path Width

3 Bridge Type - Cost

4 WRBAC s Direction to Design Team Cable Stay - Self Anchored Suspension (Hybrid) 1. Explore viability of CS-SAS (hybrid) during early PE 2. Advance Cable Stayed bridge type into preliminary engineering

5 Hybrid

6 Hybrid Ross Island

7 Hybrid Marquam

8 Hybrid St. Johns

9 Hybrid Positive Attributes Shorter tower height ht

10 Hybrid Positive Attributes Relationship to adjacent bridges

11 Hybrid Positive Attributes Transparency

12 Exploration on Viability of Hybrid Conceptual Design Work Hybrid - Refined Hybrid - Initial Team worked to advanced conceptual design to verify feasibility

13 Exploration on Viability of Hybrid Catenary Suspension Cable Hybrid - Refined Hybrid - Initial Catenary Profile Adjust size to use stay cable technology versus spinning in place

14 Exploration on Viability of Hybrid Vertical Suspender Cables Hybrid - Refined Hybrid - Initial Eliminated those not needed for structural system

15 Exploration on Viability of Hybrid Span Configuration Hybrid - Refined 830 Hybrid - Initial 860 Optimized span to move pier away from active river bank location

16 Exploration on Viability of Hybrid Anchorage System Hybrid - Refined Hybrid - Initial Optimize span to reduce length and weight of drop-in center span section

17 Exploration on Viability of Hybrid Anchorage System Hybrid - Refined Hybrid - Initial Optimize span to reduce length and weight of drop-in center span section to eliminate costly gravity anchorage

18 Exploration on Viability of Hybrid Anchorage System Hybrid - Refined Hybrid - Initial Use typical deck anchorage system

19 Results of Hybrid Analysis Hybrid - Refined Hybrid - Initial

20 WRBAC s Direction to Design Team Cable Stayed - 4 Pier Cable Stayed - 2 Pier 2. Advance Cable Stayed bridge type into preliminary engineering Work to combine best features of each to provide options

21 PE Work on Cable Stayed Type Cable Stayed - Refined

22 PE Work on Cable Stayed Type Cable Stayed - Refined 4 Pier Attributes Piers in deeper water Shorter span more cost effective 2 Pier Attributes Cables between transit way and bicycle pedestrians Hybrid Attributes Match tower height of Hybrid at 180 versus 254 and 277

23 PE Work on Cable Stayed Type Cable Stayed - Refined

24 PE Work on Cable Stayed Type Cable Stayed - Refined

25 Cable Stayed - Refined PE Work on Cable Stayed Type

26 Cable Stayed - Refined PE Work on Cable Stayed Type

27 How do the two types vary? Hybrid - Refined Cable Stayed - Refined

28 Urban Context Hybrid - Refined Tower heights are the same Cable Stay - Refined

29 Urban Context Hybrid - Refined V-Tower illustrated Could be an H-Tower Cable Stayed - Refined

30 Other Hybrid - Refined Cable Stay - Refined

31 Questions? Hybrid - Refined Cable Stay - Refined

32 Cost Estimates Hybrid - Refined Cable Stay - Refined

33 Cost Estimate Results TriMet s Estimates Reviewed National Constructors Groups Backup Adjusted labor costs, production rates, equipment costs, permanent and temporary material costs and contractor margin as needed per recent findings

34 Cost Estimate Results Design Build Contractor Engineering Cost to advance design from Preliminary Engineering to Final Design Plus Cost for Contractor Construction Engineering

35 Cost Estimate Results Design Build Contractor Engineering Same percentage used for all types

36 Cost Estimate Results Contingencies composed of three main items Requirements Risk Bid Market Risk Design Development Risk

37 Cost Estimate Results Requirements Risk Items know but not included in construction cost line Example Address water line

38 Cost Estimate Results Bid Market Risk Factors affecting bid climate Examples Bridge complexity Bidder experience Number of bidders

39 Cost Estimate Results Bid Market Risk National Constructors Group Recommended $3 4 Million More than a typical cable stayed type

40 Cost Estimate Results Design Development Risk Difference between estimating what is shown today versus Contractor bid prior to contract award

41 Cost Estimate Results Design Development Risk 11.5% used for Cable Stayed 12.5% used for Hybrid given its unique nature

42 Cost Estimate Results Costs that are different between alternatives

43 Cost Estimate Results Costs that are different between alternatives Constructing closure section at Hybrid Estimated to require an additional 4 months

44 Cost Estimate Results Costs that are different between alternatives Extended owner overhead Additional escalation Supplemental owner engineering

45 Cost Estimate Results Totals in January 2009 values

46 Cost Estimate Results Funding calculated with mid-point of construction values Year of Expenditure (YOE) August 2013

47 Cost Estimate Results January 2009 cost escalated to YOE values

48 Cost Estimate Results Excludes possible cost for steel escalation during peak market $ M 94M

49 Cost Estimate Results Excludes possible cost for steel escalation during peak market $ M Excludes interim financing cost $ M

50 Cost Estimate Results Excludes possible cost for steel escalation during peak market $ M Excludes interim financing cost $ M Annual cost to fund re-coating of steel drop-in section $90-110K

51 Cost Estimate Results

52 Cost Estimate Results $139 M Hybrid - Refined $110 M Cable Stay - Refined

53 Questions? $139 M Hybrid - Refined $110 M Cable Stay - Refined

54 Bridge Type - Cost Vertical Clearance

55 Vertical Clearance Update 4.75% 4.75% 75 Additional analysis on vertical clearance to occur during Preliminary Engineering

56 Vertical Clearance Presentations 5/4/09: FTA and US Coast Guard 5/7/09: River Users and Landside Stakeholders 5/13/09: Lower Columbia Region Harbor Safety Committee

57 Vertical Clearance Update Assembled Data River levels River users, vessel heights, river usage January 29, 2009 Researched potential impacts of climate change

58 Vertical Clearance Update Climate Change Research Findings increase due to flow by 2099 Increases occur mainly during winter months Does not consider possible flow management mitigation - dams

59 Vertical Clearance Update Allowance added for Safety and potential climate change impacts Three feet was used Analysis done with and without allowance to determine implications

60 Vertical Clearance Update Data analyzed by month Data analyzed for various bridge height ht alternatives ti 4.75% 4.75% 75 Additional analysis on vertical clearance would occur during Preliminary Engineering

61 Vertical Clearance Update Analyzed River Data Analyzed a wide range of vertical clearance alternatives

62 Vertical Clearance Update Analyzed River Data Analyzed a wide range of vertical clearance alternatives Example

63 Vertical Clearance Update Portland Spirit s Vessels Air Draft: 58 Air Draft: 44 Columbia Gorge (Copied from: Portland Spirit (Copied from:

64 Vertical Clearance Update Results Tabulated Number of days without passage by month Totaled for each vertical clearance alternative Amount of change between clearance options calculated

65 Vertical Clearance Update Results Tabulated Same process used for percentage passing

66 Vertical Clearance Update Results Analyzed Graphed percent passage in December Graphed the change in % between clearances for December Determine point of diminishing return

67 Vertical Clearance Update Vertical Clearance Alternatives Analysis Portland Spirit's Columbia Gorge: 58' Air Draft n Clearance Alter rnatives 90.0% 80.0% 0% 70.0% 60.0% 97.6% 99.4% 99.8% Graphed percent passage in December Passing Betwee 50.0% 40.0% 30.0% 46.8% Change in % 20.0% 10.0% 0.0% Vertical Clearances Change in Percent Passage Between Clearance Alternatives for December Percent Passing for December

68 Vertical Clearance Update Vertical Clearance Alternatives Analysis Portland Spirit's Columbia Gorge: 58' Air Draft n Clearance Alter rnatives 90.0% 80.0% 0% 70.0% 60.0% 97.6% 99.4% 99.8% Graphed percent passage in December Passing Betwee 50.0% 40.0% 30.0% 46.8% Graphed the change in % between clearances for December Change in % 20.0% 10.0% 0.0% Vertical Clearances Change in Percent Passage Between Clearance Alternatives for December Percent Passing for December

69 Vertical Clearance Update Vertical Clearance Alternatives Analysis Portland Spirit's Columbia Gorge: 58' Air Draft Change in % Passing Between Clearance Alternat tives 90.0% 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% 97.6% 46.8% 99.4% 99.8% Beyond there is No Change In % Passing 00% 0.0% Vertical Clearances Change in Percent Passage Between Clearance Alternatives for December Percent Passing for December

70 Vertical Clearance Update With Three Foot Allowance for Safety Climate Change Vertical Clearance Alternatives Analysis With Three Foot Allowance for Climate Change and Safety Portland Spirit's Columbia Gorge: 58' Air Draft Change in % Passing Between Clearance Alterna atives 90.0% 80.0% 70.0% 60.0% 50.0% 40.0% 30.0% 20.0% 10.0% 0.8% 91.9% 97.6% 98.0% 98.7% 98.9% 99.4% 99.7% 99.8% Beyond there is Nominal Change In % Passing 00% 0.0% Vertical Clearances Change in Percent Passage Between Clearance Alternatives for December Percent Passing fro December

71 Vertical Clearance Update Draft Findings Additional vertical clearance provides diminishing benefit to existing commercial river users at about 77.36

72 Analysis of Landside Implications Provide for stations at grade

73 Analysis of Landside Implications Analyzed a wide range of vertical clearance alternatives with ADA compliant ramps and landings

74 Analysis of Landside Implications Plans Developedeloped

75 Analysis of Landside Implications Implications Tabulated

76 Analysis of Landside Implications Relative Landside Implications for Bridge Clearance Alternatives Relative Land dside Implications $80,000,000 $70,000,000 $60,000,000, $50,000,000 $40,000, $30,000,000 Costs used as a Proxy to graphically illustrate the composite landside implications analyzed $20,000,000 $10,000,000 $ Bridge Clearance Alternatives Relative Landside Implications for Bridge Clearance Alternatives

77 Analysis of Landside Implications Relative Landside Implications for Bridge Clearance Alternatives Relative Land dside Implications $80,000,000 $70,000,000 $60,000,000, $50,000,000 $40,000, $30,000,000 Beyond Landside Impacts Change from Nominal to Significant $20,000,000 $10,000,000 $ Bridge Clearance Alternatives Relative Landside Implications for Bridge Clearance Alternatives

78 Vertical Clearance Update Draft Findings Additional vertical clearance provides diminishing benefit to existing commercial river users at about Moderate to significant landside impacts for incremental increases in bridge vertical clearance occurs at about 77.36

79 Vertical Clearance Update Draft Findings Additional vertical clearance provides diminishing benefit to existing commercial river users at about Moderate to significant landside impacts for incremental increases in bridge vertical clearance occurs at about Questions?

80 Bridge Type - Cost Vertical Clearance Bicycle Pedestrian Path Width

81 Bicycle Pedestrian Path Width

82 Bicycle Pedestrian Path Width Current Design Dedicated Facilities Bicycle lane Pedestrian through zone Potential opportunities for sharing

83 Bicycle Pedestrian Path Width Demand danalysis

84 Bicycle Pedestrian Path Width Demand danalysis

85 Bicycle Pedestrian Path Width Demand danalysis Hawthorne Bridge Hawthorne Bridge currently at 8,000 daily

86 Bicycle Pedestrian Path Width Demand danalysis - Findings Uphill traffic with varying climbing speeds create conflict events Opportunities to provide passing needed

87 Bicycle Pedestrian Path Width Path Width How wide can width be pushed without changing structure type Path width can be increased to path width within acceptable range from city Provides for riding side-by-side or passing

88 Bicycle Pedestrian Path Width Path Width How wide can width be pushed without changing structure type Path width can be increased to path width within acceptable range from city Provides for riding side-by-side or passing Estimate $3.255 M

89 Bicycle Pedestrian Path Width Path Width How wide can width be pushed without changing structure type Path width can be increased to path width within acceptable range from city Provides for riding side-by-side or passing Questions? Estimate $3.255 M

90 Questions? Bridge Type - Cost Vertical Clearance Bicycle Pedestrian Path Width

91 Next Steps June 22, 2009: Steering Committee Meeting Fall 2009: WRBAC meeting December 2009: 25% Design Submittal Early Spring 2010: WRBAC meeting March 2010: 30% Design Submittal

92 Thank you For more information, visit: trimet.org/pm gp

Transportation Committee Revised Project Scope and Cost Estimate. November 23, 2015

Transportation Committee Revised Project Scope and Cost Estimate November 23, 2015 1 Today s Topics Revised Project Scope Revised Cost Estimate Municipal Approval Action 2 3 Revised Project Scope Project