Dallas CBD Second Light Rail Alignment (D2) · 8/3/2016 · Dallas CBD Second Light Rail Alignment...
Transcript of Dallas CBD Second Light Rail Alignment (D2) · 8/3/2016 · Dallas CBD Second Light Rail Alignment...
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Dallas CBD Second Light Rail Alignment (D2)
Stakeholder Work Group #4
August 3, 2016
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Agenda
• Clarify Master ILA and Federal Funding• Project Status
– Traffic Analysis Overview – Noise/Vibration Overview– Lamar Constraints– East Segment (LPA, Design Options)– Deep Ellum Issues– Subway– Urban Design
• Schedule and Next Steps
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Locally Preferred Alternative
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Master Interlocal Agreement
• Master ILA, Article V
– Use of Pacific/Bryan must first be approved through an AA/DEIS
– Include subway analysis
– Subway remains the City’s preferred solution
– DART must provide a funding strategy
– Seek greatest possible funding amount
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Master Interlocal Agreement
• Master ILA, Article V (continued)
– DART will commit to construction of a subway in the CBD no later than when:
– (c.1) Over a six month period average ridership exceeds 8,000 passengers per peak hour per peak direction, and/or headways decrease to 2.5 minutes
– (c.2) funding first becomes available earlier through one or a combination of sources
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Council Action
• On September 9, 2015, the Dallas City Council passed Resolution #151657 approving the B4 Jackson Alternative with the understanding that:
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CARDINAL INFRASTRUCTURE, LLC TEAM
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Federal Funding
ISSUE PRESENTED ‣If DART were to seek greater than 50% Federal funding for
the D2 Core Capacity Project, is it likely that the Project would receive such a level of funding?
BRIEF ANSWER ▸No. ▸80% of project costs authorized but not allocated or
appropriated. ▸Neither the Federal appropriations/funding legislation nor
the Administration’s proposed allocations in the President’s Budget provide more than a 50% federal share for a project such as D2.
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Federal Funding
• MAP-21 (2012) for the first time allowed capital grants for “Core Capacity” projects such as D2.
• “Core Capacity project” means: a “substantial corridor-based capital investment in an existing fixed guideway system that increases the capacity of a corridor by not less than 10 percent.” 49 U.S.C. 5309(a)(2).
• FTA treats Core Capacity projects as parallel to “New Starts” grants and applies the same process for both
• First four Core Capacity projects are in line for Federal CIG funding. None have actually entered into FFGAs
• For those four, Federal shares sought are 25%, 48%, 37%, 49%
• This is in line with historic New Starts requests, which have a 50% Federal share or less.
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Federal Funding
• Section 5309 – the authorizing legislation for the FTA CIG program – allows a project sponsor to seek up to 80% federal funding
• President requests an amount of CIG funding in proposed budget (Allocation)
• Funds must then actually be appropriated in a separate bill
• Congress is not required to appropriate any/all of the authorized funding or any/all of the President’s Request
• In recent practice, Congress appropriates less than the President’s budget request
• FTA must then apportion the amount actually appropriated among the capital projects
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Process and Schedule Review
• Authorized into PD on November 5, 2015
• Complete (30% design and Final EIS/ROD) by summer 2017
• Core Capacity Project Submittal Updates to FTA
– September 2016 (Updated information)
– September 2017 (To support request to enter Engineering
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12We are here
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Traffic Analysis
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Traffic Analysis Overview
• Traffic analysis being done in two phases
• Phase 1 using City of Dallas traffic model– Analysis in progress
– Focused on eastern end of project
• Phase 2 will use more detailed micro-simulation model– Future task
– Corridor wide analysis covering more of the downtown area
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Synchro Model
• City updated model and provided to DART Team
• DART supplemented traffic counts at 9 locations
• Agreed upon 0.5% per year traffic growth rate
• Analysis for:
– 2016: Existing
– 2021: No Build and Build
– 2041: No Build and Build
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Study Intersections: D2 East Segment
Jackson Wood Young
Common intersections
Additional perimeter intersections
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Jackson Street LPA AlignmentAssumptions for Traffic Movements under “Build” Scenario
St P
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Main St
(Street Closure)
Prepared by HDR Inc
Street Travel Direction
Restricted Movement
Continued Movement
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Wood Street AlignmentAssumptions for Traffic Movements under “Build” Scenario
St P
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Main St
(Street Closure)
Prepared by HDR Inc
Street Travel Direction
Restricted Movement
Continued Movement
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Young Street AlignmentAssumptions for Traffic Movement under “Build” Scenario
(Drop 1 Lane in each Direction)
St P
aul S
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Main St
Street Travel Direction
Restricted Movement
Continued Movement
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Traffic Next Steps
• Analyze No Build and Build conditions for years 2021 and 2041
• Refine analysis using microsimulation for refined LPA corridor
• Identify impacts and develop mitigation such as:
– Signal timing enhancements
– Signal progression improvements
– Intersection improvements
– Signage/circulation patterns
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Noise/Vibration
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Noise/Vibration Overview
• Noise and Vibration Impact Assessment Process
• Measurement Locations
• Measurement Results
• Next Steps– Analysis/Modeling
– Impact Identification
– Mitigation (if necessary)
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Noise/Vibration Assessment Process
• Document existing noise and vibration levels at locations representative of sensitive land uses– Category 1: concert halls, recording studios, etc.
– Category 2: residences, hotels, hospitals
– Category 3: churches, schools, cemeteries, parks, etc.
• Estimate noise and vibration levels with the project– Operating plan
– Vehicle specifications
• Identify impacts in accordance with FTA and DART guidance
• Propose mitigation measures (if necessary)
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Noise/Vibration Measurements
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Noise Exposure (dBA)Ldn – 24 hour cumulativeLeq – Peak hour 25
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Noise/Vibration Next Steps
• Analysis and modeling
• Impact identification
• Mitigation design (as necessary)
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Project Status
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Locally Preferred AlternativeDiscussion Areas
1. Museum Way Station concept
2. Lamar Constraints/ Griffin Option
3. SoCo Loft area
4. East Segment (LPA, Design Options)
5. Farmers Market Options
6. Deep Ellum Issues
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Museum Way Station Concept
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Lamar Constraints/Griffin Option
SoCo Lofts
Proposed ShramanSouth Asian Museum and Learning Center
Subsurface Utility Locations, Building foundations
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SoCo Loft Option 1
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SoCo Loft Option 2
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Griffin Option
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East Segment Design Options
Jackson (LPA) Wood Young
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First Presbyterian Church Concept 1
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First Presbyterian Church Concept 2
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East Segment Design OptionsJackson/Wood Couplet
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East Segment Design Options
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Proposed Harwood Park
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Farmers Market Option 1
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Farmers Market Option 2
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Farmers Market Option 3
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Deep Ellum Issues
4343
• Key issues:
– Traffic circulation/access
– Pedestrian movements
– Urban design concerns
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Summary of Staff Recommended LPA Refinements
• Consider shifting from Lamar to Griffin– Wider right-of-way– Fewer utility/building foundation constraints– Ongoing meetings with property owners along corridor
• Focus on Young Street for East Segment– Only street with sufficient right-of-way– Maintains accessibility to nearby properties– No Church property required
• Continue with current Deep Ellum alignment– Focus on addressing traffic, pedestrian, urban design
concerns
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Subway Review
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Alternative/Design Option
Current Scenario(21 % subway; 79% at-grade)
SubwayScenario*
Lamar/Young/Jackson **$520 +/- $1,147
Lamar/Young/Wood **$520 +/- $1,140
Lamar/Young $520 $1,138
Capital Costs (Million, 2015 $)
NOTES: * Planning level estimate, based on conceptual alignment definition.**Cost estimates for the LPA (Lamar/Young/Jackson) and Lamar/Young/Wood Design Options will
be developed as part of the current project development/preliminary engineering work.
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Urban Design
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Urban Design
• Key issue for stakeholders
• DDI forming an Urban Design Advisory Committee
• Coordination with the City of Dallas
• Recommend focused discussion on this topic at future meeting
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Upcoming Meetings to Discuss and Refine LPA Corridor
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Organization Date
City of Dallas Transportation and Trinity River Project Committee (Pending)
August 22, 2016
DART Board Planning Committee Briefing August 23, 2016
Public/Stakeholder Meetings To Be Determined
DART Board Planning Committee (Action)
September 27, 2016
DART Board Committee of the Whole (Action)
October 4, 2016
Dallas City Council(Action)
To Be Determined
DART Board (Action)
October 25, 2016
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Next Steps
• Approval of LPA Refinements
• Continue development of preliminary engineering
• Complete environmental impact analyses
• Document comparative evaluation of east segment options
• Continue regular Stakeholder Work Group meetings
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