south downtown i-405 access study · 2021. 2. 2. · south downtown i-405 access study. panelists....
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Stakeholder Forum #4
February 4, 2021
South Downtown I-405 Access Study
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Panelists
Shuming YanProject manager,Bellevue Transportation Department
Barrett HansonStudy work group,WSDOT
Karl WestbyStudy work group,WSDOT
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Emil KingStudy work group,Bellevue Community Development Department
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Facilitation and support
Laura LaBissoniere Miller, Community engagement –forum facilitator, PRR
Nancy Thai, Community engagement –forum support, PRR
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Marie JensenPublic involvement manager,Bellevue Transportation Department
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Agenda
1. Welcome and review meeting objectives
2. Recap stakeholder engagement process
3. Review stakeholder feedback from forum #3
4. Share findings from Tier 2 evaluation analysis
5. Discussion and Q&A
6. Next steps
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Tonight’s objectives
• Share Tier 2 evaluation findings, including qualitative and quantitative analysis
• Discuss plan and policy considerations identified at previous stakeholder meetings
• Gather input to inform study team’s recommendation to City Council
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Stakeholder engagement recapForum #1:
• Overview of study goals, guiding principles, process and timeline
• Shared project purpose and need
Forum #2:
• Introduced alternatives
• Shared Tier 1 fatal flaw screening results
Forum #3:
• Shared more fatal flaw screening results
• Shared staff recommendation of five alternatives for the Council's consideration
Thank you for your input during and after each forum!
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Stakeholder forum #3 feedback
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Additional feedback• Concern about advancing Northeast Second Street extension
• Interest in combining Northeast Second Street extension and Lake Hills Connector southbound on-ramp options
• Interest in traffic modeling results
• Question about why Northeast Fourth Street westbound left turn to southbound on-ramp is restricted on Lake Hills Connector southbound on-ramp alternative
• Support for study team’s transparent approach
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Tier 2 evaluation findings
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Alternatives evaluated in Tier 2Lake Hills Connector southbound on-ramp
Southeast Sixth Street extension and southbound on-ramp
Southeast Sixth Street extension inside access
Northeast Second Street extension No build (baseline)
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Tier 2 – Alternatives evaluation
Cost
Access and safety
Impact on
propertydevelopment
Alignment with adopted plans and policies
Travel time
Stakeholder Input
Community Input
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QualitativeAnalysis and
Measures
Quantitative
Analysis and
Measures
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Alignment with adopted plans and policies
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Alignment with regional and local transportation plans• All alternatives, except No build, align with state and regional plans
• Lake Hills Connector southbound on-ramp
o Auto access only; no bike lanes and sidewalks, no east-west connection
• Southeast Sixth Street extension options (southbound on-ramp and inside access)
o New access to I-405, multimodal with east-west connection
• Northeast Second Street extension
o Multimodal with east-west connection
o No new freeway access
• No build
o Does not include vehicle capacity to support future growth
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Alignment with land use and urban design plans and policies• Lake Hills Connector southbound on-ramp
o No significant policy conflict
• Southeast Sixth Street extension options (southbound on-ramp and inside
access)
o East Main transit-oriented development work did not anticipate ramps at Southeast Sixth Street
• Northeast Second Street extension
o No new access to support growth
o Reduces redevelopment potential
• No build
o No new access to support growth
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Alignment with existing environmental codes and policies• Lake Hills Connector southbound on-ramp
o Permanent impacts from shade, lighting, noise and water quality
• Southeast Sixth Street extension options (southbound on-ramp and inside
access)
o Likely temporary impacts to wetlands during construction
o Permanent impacts from shade, lighting, noise and water quality
• Northeast Second Street extension
o Permanent wetland and stream impacts
o Permanent impacts from shade, lighting, noise and water quality
o No build
o Maintains existing conditions – no environmental impacts
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East Main Transit-Oriented Development Vision• 2019 Comprehensive Plan policies
• Southeast Sixth Street extension ramp alternatives require policy changes
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Travel time
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I-405 access capacity (2035)
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• Southeast Sixth Street extension inside access provides highest capacity with both on- and off-ramps
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Additional intersection improvementsLake Hills Connector southbound on-ramp
Southeast Sixth Street extension and southbound on-ramp
Southeast Sixth Street extension inside accessRechannelization,
convert westbound left turn on-ramp to westbound through
Add eastbound and westbound left-turn lanes
Rechannelize to provide an exclusive left-turn lane
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City wide travel time savings
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• Daily travel time for all roads in Bellevue
• Southeast Sixth Street extension inside access saves most travel time
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Intersection delay reductions Intersections evaluated
Existing IntersectionNew Intersection
Legend
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Access and safety
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Multimodal access• Separate bicycle lane and
sidewalks make it easier
for people to walk and bike
• New connection across I-
405
• Lake Hills Connector and
No Build do not add
facilities for people walking
and biking
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New sidewalk/separate bike lane
Light rail
Trail
Study alternative
Legend
Southeast Sixth Street extension and southbound on-ramp
Southeast Sixth Street extension inside access
Northeast Second Street extension
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Safety
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• Crash rates on local roadways are 20 percent higher than freeways. More access to freeways helps improve safety on local roadways
• Reducing congestion helps prevent rear-end crashes, which account for 30 percent of crashes in the study area
• Separate bicycle lanes and sidewalks improve safety for people walking and biking
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Impact on property
development
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Lake Hills Connector southbound on-ramp
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Southeast Sixth street extension and southbound on-ramp
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Southeast Sixth street extension and southbound on-ramp
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Southeast Sixth Street extension inside access
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Southeast Sixth Street extension access property impacts• Southeast Sixth Street connects
to 112th Avenue Southeast and Lake Hills Connector, no connection to 114th Avenue Southeast
• Provides property access road under the bridge for the elevated Southeast Sixth Street
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Northeast Second Street extension
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Northeast Second Street extension• Requires elevating roadway over
114th Avenue Northeast and I-405 to connect with 116th Avenue Northeast
• Properties with access on 114th Avenue Southeast must use Southeast Sixth Street to connect to north and downtown
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Northeast Second Street extension• Requires elevating roadway over
114th Avenue Northeast and I-405 to connect with 116th Avenue Northeast
• Properties with access on 114th Avenue Southeast must use Southeast Sixth Street to connect to north and downtown
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Cost
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Planning level cost estimates
*Cost estimate based on escalation to 2030 construction. Includes engineering, right-of-way,and construction costs. Right-of-way costs assume acquisition prior to redevelopment
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Putting it all together
We evaluated the five alternatives based upon:
• Alignment with adopted plans and policies
• Travel time
• Access and safety
• Property and environmental impacts
• Costs
We are looking for your feedback and input
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Discussion and Q&A
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Study schedule
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Next steps
• Stakeholder questionnaire (due Monday, Feb. 8)
• Online open house: Feb. 8-19
• City Council meeting: April 5
• For more information, visit BellevueWA.gov/access-study
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Thank you!
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AppendixAdditional traffic information
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Travel time between major destinationsRelative to 2035 No build
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For trips going from City Hall to I-90 westbound, the two Southeast Sixth Street extension alternatives are expected to save one minute/vehicle in travel time while allowing more people to use the freeway
The data were taken at the I-
90/Island Crest Way Interchange.
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Travel time between major destinationsRelative to 2035 No build
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For trips going from City Hall to I-90 eastbound, the three alternatives that provide access to I-405 are expected to save about half-a-minute/vehicle in travel time while allowing more people to use the freeway
The data were taken at the I-90
Eastgate Interchange.
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No build 2035 traffic forecast(PM Peak Hour)
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Changes of less than ten trips/hour are not shown. The changes on most local streets are small and within daily volume fluctuations.
2035 Traffic Comparison: Lake Hills Connector southbound on-ramp vs No build(PM Peak Hour)
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Changes of less than 10 trips/hour are not shown. The changes on most local streets are small and within daily volume fluctuations.
2035 Traffic Comparison: Southeast Sixth Street Extension Inside Access vs No build(PM Peak Hour)
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2035 Traffic Comparison: Southeast Sixth Street Extension southbound on-ramp vs No build(PM Peak Hour)
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Changes of less than ten trips/hour are not shown. The changes on most local streets are small and within daily volume fluctuations.
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2035 Traffic Comparison Northeast Second Street Extension vs No build (PM peak hour)
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Changes of less than ten trips/hour are not shown. The changes on most of local streets are small and within daily volume fluctuations.
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Intersection Analysis 2035 (PM peak hour)
Alternatives Change
NE 2nd St. Ext 6.6%
LHC SB Ramp +improvements -6.3%
SE 6th Inside Access +improvements -6.8%
SE 6th GP Ramp +improvements -9.6%
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2035 Mode Share in the study area
• Single-occupancy vehicle (SOV) mode share for work trips is expected to decrease from 57% to 52%
• SOV mode share for all trips is expected to decrease from 38% to 36%
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Additional intersection improvementsImprovements added to:• Lake Hills Connector southbound on-ramp• Southeast Sixth Street extension and southbound on-ramp• Southeast Sixth Street extension inside access
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• Lake Hills Connector southbound on-ramp: Eliminating westbound left turn at Northeast Fourth Street/I-405 southbound ramp
Additional intersection improvements