West Seattle and Ballard Link Extensions

Transcription

1 West Seattle and Ballard Link Extensions Stakeholder Advisory Group Meeting April 24, 2018 Agenda Welcome and introductions Previous meeting recap How we get to a Recommendation Level 1 Recommendation discussions Review Group Recommendations Next steps and next meeting 1

2 Previous meeting recap 1 2 Map of alternatives Evaluation measures 3 4 Segment summary Small Group Discussion 2

3 SAG questions ST3 Plan consistency 3 rd Party funding ST3 Plan consistency Identifies mode, corridor, number of stations, general station locations Informs cost, schedule, operating needs 3

4 ST3 Plan consistency Identifies mode, corridor, number of stations, general station locations Informs cost, schedule, operating needs West Seattle/Duwamish summary ST3 Representative Project Baseline for comparison with more potential with greater challenges Not practical suggestions Oregon Street/Alaska Junction West Seattle Bridge/Fauntleroy Pigeon Ridge/West Seattle Yancy Street/West Seattle West Seattle Golf Course/Alaska Junction () under Duwamish West Seattle Bridge Gondola, rail/bus bridge Extensions to Alki, Admiral, etc. Avoids Fauntleroy and Alaska; better orientation south Affects Oregon St and 44 th Ave Creates isolated Delridge Station Lessens effects to Port, Junction, Delridge; better orientation south Requires two tunnels; may require 3 rd Party funding Consolidates stations; potentially not consistent with ST3 Plan Requires tunnel; may require 3 rd Party funding Crosses golf course, Section 4(f) Lessens effects to Junction, Delridge Eliminates station; potentially not consistent with ST3 Plan Impractical tunnel depth and length Existing structure not built to accommodate LRT Constructability issues Mode not consistent with ST3 Plan Not included in ST3 Plan or long range plan 8 4

5 ST3 Plan consistency Identifies mode, corridor, number of stations, general station locations Informs cost, schedule, operating needs West Seattle/Duwamish summary ST3 Representative Project Baseline for comparison with more potential with greater challenges Not practical suggestions Oregon Street/Alaska Junction West Seattle Bridge/Fauntleroy Pigeon Ridge/West Seattle Yancy Street/West Seattle West Seattle Golf Course/Alaska Junction () under Duwamish West Seattle Bridge Gondola, rail/bus bridge Extensions to Alki, Admiral, etc. Avoids Fauntleroy and Alaska; better orientation south Affects Oregon St and 44 th Ave Creates isolated Delridge Station Lessens effects to Port, Junction, Delridge; better orientation south Requires two tunnels; may require 3 rd Party funding Consolidates stations; potentially not consistent with ST3 Plan Requires tunnel; may require 3 rd Party funding Crosses golf course, Section 4(f) Lessens effects to Junction, Delridge Eliminates station; potentially not consistent with ST3 Plan Impractical tunnel depth and length Existing structure not built to accommodate LRT Constructability issues Mode not consistent with ST3 Plan Not included in ST3 Plan or long range plan 10 5

6 ST3 Plan consistency Identifies mode, corridor, number of stations, general station locations Informs cost, schedule, operating needs West Seattle/Duwamish summary ST3 Representative Project Baseline for comparison with more potential with greater challenges Not practical suggestions Oregon Street/Alaska Junction West Seattle Bridge/Fauntleroy Pigeon Ridge/West Seattle Yancy Street/West Seattle West Seattle Golf Course/Alaska Junction () under Duwamish West Seattle Bridge Gondola, rail/bus bridge Extensions to Alki, Admiral, etc. Avoids Fauntleroy and Alaska; better orientation south Affects Oregon St and 44 th Ave Creates isolated Delridge Station Lessens effects to Port, Junction, Delridge; better orientation south Requires two tunnels; may require 3 rd Party funding Consolidates stations; potentially not consistent with ST3 Plan Requires tunnel; may require 3 rd Party funding Crosses golf course, Section 4(f) Lessens effects to Junction, Delridge Eliminates station; potentially not consistent with ST3 Plan Impractical tunnel depth and length Existing structure not built to accommodate LRT Constructability issues Mode not consistent with ST3 Plan Not included in ST3 Plan or long range plan 12 6

7 ST3 Plan consistency Identifies mode, corridor, number of stations, general station locations Informs cost, schedule, operating needs West Seattle/Duwamish summary ST3 Representative Project Baseline for comparison with more potential with greater challenges Not practical suggestions Oregon Street/Alaska Junction West Seattle Bridge/Fauntleroy Pigeon Ridge/West Seattle Yancy Street/West Seattle West Seattle Golf Course/Alaska Junction () under Duwamish West Seattle Bridge Gondola, rail/bus bridge Extensions to Alki, Admiral, etc. Avoids Fauntleroy and Alaska; better orientation south Affects Oregon St and 44 th Ave Creates isolated Delridge Station Lessens effects to Port, Junction, Delridge; better orientation south Requires two tunnels; may require 3 rd Party funding Consolidates stations; potentially not consistent with ST3 Plan Requires tunnel; may require 3 rd Party funding Crosses golf course, Section 4(f) Lessens effects to Junction, Delridge Eliminates station; potentially not consistent with ST3 Plan Impractical tunnel depth and length Existing structure not built to accommodate LRT Constructability issues Mode not consistent with ST3 Plan Not included in ST3 Plan or long range plan 14 7

8 West Seattle/Duwamish summary with more potential with greater challenges Not practical suggestions ST3 Representative Project Funding identified? Oregon Street/Alaska Junction West Seattle Bridge/Fauntleroy Pigeon Ridge/West Seattle Yancy Street/West Seattle West Seattle Golf Course/Alaska Junction () under Duwamish West Seattle Bridge Funding not identified? Gondola, rail/bus bridge Extensions to Alki, Admiral, etc. Baseline for comparison Avoids Fauntleroy and Alaska; better orientation south Affects Oregon St and 44 th Ave Creates isolated Delridge Station Lessens effects to Port, Junction, Delridge; better orientation south Requires two tunnels; may require 3rd Party funding Consolidates stations; potentially not consistent with ST3 Plan Requires tunnel; may require 3 rd Party funding Crosses golf course, Section 4(f) Lessens effects to Junction, Delridge Eliminates station; potentially not consistent with ST3 Plan Impractical tunnel depth and length Existing structure not built to accommodate LRT Constructability issues Mode not consistent with ST3 Plan Not included in ST3 Plan or long range plan 15 How we get to a recommendation 8

9 Broad range of initial alternatives Refine remaining alternatives Further evaluation Preferred Alternative and other EIS alternatives How we get to a recommendation Step 1 Start with the Not practical suggestions Should any of these suggestions be carried forward? 9

10 How we get to a recommendation Step 2 Then, look at the with greater challenges Should any of these alternatives be carried forward? How might they be refined? How we get to a recommendation Step 3 Finally, look at the with more potential How might these alternatives be refined? 10

11 Level 1 Recommendation discussions West Seattle/ Duwamish Interbay/Ballard Downtown SODO Representative project study segments 22 11

12 Interbay / Ballard Level 1 23 Interbay / Ballard Segment Qualitative Capital Cost Evaluation Measures Station proximity to Urban Centers/Villages Reliable Service ST3 Representative Project (Baseline) Elliott/15 th / 16 th / Fixed Bridge Traffic Circulation, Freight Access, Business/Commerce West of BNSF / 20 th / 17 th / Fixed Bridge West of BNSF / 20 th / 17 th / East of BNSF/14th/Movable Bridge Elliott/Armory Way/14th/ West of BNSF / 20 th / Higher Performance Comparable Performance Lower Performance 12

13 Interbay / Ballard summary with more potential with greater challenges Not practical suggestions ST3 Representative Project Elliott/15 th /16 th /Fixed Bridge West of BNSF/20 th /17 th /Fixed Bridge East of BNSF/14 th /Movable Bridge West of BNSF/20 th /17 th Elliott/Armory Way/14 th / West of BNSF/20 th / through Queen Anne/Interbay Extensions to 65 th, 85 th, Northgate Multi-modal Salmon Bay bridge Eliminate or add stations Baseline for comparison Avoids 15 th Ave/Dravus interchange Supports more reliable service (no bridge openings) Avoids Elliott Ave,15th Ave and Fishermen s Terminal Supports more reliable service Avoids Elliott Ave,15 th Ave and Fishermen s Terminal Locates station on 14 th Ave within industrial area Avoids Elliott Ave, 15th Ave, Fishermen s Terminal and Salmon Bay Requires tunnel; may require 3 rd Party funding Avoids Elliott Ave, 15th Ave, Fishermen s Terminal and Salmon Bay Requires tunnel; may require 3 rd Party funding Avoids Elliott Ave, 15th Ave, Fishermen s Terminal and Salmon Bay Requires longer tunnel; may require 3 rd Party funding Requires construction and displacement within Ballard core Depth and length impractical; would affect downtown tunnel depth Not included in ST3 plan ST3 plan defined project as rail-only bridge Not consistent with ST3 plan 25 Interbay / Ballard Level

14 Downtown Level 1 27 Downtown Segment Evaluation Measures Qualitative Capital Costs Constructability Issues ST3 Representative Project (Baseline) 5 th /Harrison Station proximity to Urban Centers/Villages 5 th /Mercer 6 th /Boren/Roy 8 th /6 th /Republican 5 th /Roy/Consolidated SLU Station Higher Performance Comparable Performance Lower Performance 14

15 Downtown summary ST3 Representative Project Baseline for comparison with more potential with greater challenges Not practical suggestions 5th/Harrison 6 th /Boren/Roy 5 th /Mercer 5 th /Roy/Consolidated SLU Station 8 th /6 th /Republican (First Hill) Use Downtown Seattle Transit (DSTT) Design for potential extensions to north and/or east Avoids utility conflicts on Republican and station under SR 99 off-ramp Decreased station coverage; potentially move Denny Station south Avoids utility conflicts on Republican and station under SR 99 off-ramp Increases construction risk due to I-5 walls along 6 th Ave; avoids tiebacks on 5 th Ave Avoids utility conflicts on Republican and station under SR 99 off-ramp Increases construction risk due to large sewer on Mercer Avoids utility conflicts on Republican and station under SR 99 off-ramp Consolidates stations; potentially not consistent with ST3 Increases construction risk due to two crossings under I-5 First Hill station not consistent with ST3 Existing DSTT capacity constraints Extensions to north and/or east not included in ST3 or long range plan 29 Downtown Level

16 SODO Level 1 31 SODO Segment Evaluation Measures Qualitative Capital Costs ST3 Representative Project (Baseline) Massachusetts Portal Traffic Circulation, Freight Access, Business/Commerce Surface E-3 Higher Performance Comparable Performance Lower Performance 16

17 International District/Chinatown Station 33 Intentionally blank 17

18 SODO summary with more potential ST3 Representative Project Surface E-3 Massachusetts Portal Maintain buses on E-3 Baseline for comparison Less service disruption during construction Accommodates Stadium Station on both lines Eliminates existing grade crossings at Lander, Holgate; closes Royal Brougham Reduces cut-and-cover construction on 5 th Ave in Chinatown/Int l District Less service disruption during construction Eliminates existing grade crossing at Holgate Requires longer tunnel; more property; may require 3 rd Party funding Not practical due to ROW constraints Not practical suggestions First Ave alignment Design for potential extension south to Georgetown Alignment and stations locations not consistent with ST3 Not included in ST3 or long range plan 35 SODO Level

19 West Seattle / Duwamish Level 1 37 West Seattle / Duwamish Segment Evaluation Measures Station proximity to Urban Centers/Villages Qualitative Capital Costs ST3 Representative Project (Baseline) Pigeon Ridge / West Seattle Freight Access / Business Concerns West Seattle Bridge / Fauntleroy Yancy Street / West Seattle Oregon Street / Alaska Junction West Seattle Golf Course / Alaska Junction Higher Performance Comparable Performance Lower Performance 19

20 West Seattle / Duwamish summary ST3 Representative Project Baseline for comparison with more potential with greater challenges Not practical suggestions Oregon Street/Alaska Junction West Seattle Bridge/Fauntleroy Pigeon Ridge/West Seattle Yancy Street/West Seattle West Seattle Golf Course/Alaska Junction () under Duwamish West Seattle Bridge Gondola, rail/bus bridge Extensions to Alki, Admiral, etc. Avoids Fauntleroy and Alaska; better orientation south Affects Oregon St and 44 th Ave Creates isolated Delridge Station Lessens effects to Port, Junction, Delridge; better orientation south Requires two tunnels; may require 3 rd Party funding Consolidates stations; potentially not consistent with ST3 Plan Requires tunnel; may require 3 rd Party funding Crosses golf course, Section 4(f) Lessens effects to Junction, Delridge Eliminates station; potentially not consistent with ST3 Plan Impractical tunnel depth and length Existing structure not built to accommodate LRT Constructability issues Mode not consistent with ST3 Plan Not included in ST3 Plan or long range plan 39 West Seattle / Duwamish Level

21 Review Group Recommendations Sample recommendation worksheet Carry forward Do not carry forward Comments/ Notes with more potential with greater challenges Not practical suggestions ST3 Representative Project Alternative Alternative Alternative Alternative Alternative Alternative 42 21

22 Next steps Neighborhood forums Spring Schedule 4/21: Chinatown / Int l District 4/23: Denny / SLU / Seattle Center 5/2: Midtown / Westlake 5/5: Delridge / Avalon / Alaska Junction 5/9: SODO / Stadium 5/12: Ballard / Interbay / Smith Cove 44 22

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