i-65/i-70 north split project...north split interchange indot is preparing an environmental study...
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I-65/I-70 North Split ProjectProject Update & CSS Neighborhood WorkshopApril 2019
North Split InterchangeINDOT is preparing an environmental study for the North Split interchange
• Where I-65 and I-70 meet at the northeast corner of downtown inner loop
• Constructed 40 to 50 years ago• Second-most heavily-traveled interchange in the state –
214,000 vehicles per day• Project goals:
• Replace deteriorated pavement and bridges• Improve safety• Improve traffic flow
North Split ProjectMajor Project Milestones
• September, 2017 – Project Initiation• May, 2018 – System-Level Analysis of Downtown
Interstates• September, 2018 – Alternatives Screening Report• March, 2019 – Context Sensitive Solutions (CSS) process• Early 2020 – Environmental Assessment complete• 2021 - 2022 – Project Construction
Environmental Context
North Split Project Area• Historic Districts• Park Property• Monon Greenway• Cultural Trail• CSX Railroad
Physical Condition and Safety
Deteriorated pavement and bridge conditions. • Constructed in the 1960s and 1970s –
pavement is past its life expectancy
• Bridge conditions are poor and getting worse:
Under 5 years of life (11 bridges)
5 - 10 years of life (16 bridges)
• Over 1,600 crashes from 2012 to 2016
• Most Crashes Rear-end and Sideswipe
Safety – High Crash Locations
Top 4 Crash Locations
Safety - Weaving Areas
• Highest number of crashes are on west leg of the interchange, in weaving areas:
Most frequent crash type: • Rear-end, followed by sideswipe
Pennsylvania Street Exit Ramp Delaware Street Entrance Ramp
Most frequent crash type: • Sideswipe, followed by rear-end
• Replaces all pavement and bridges• Improves safety at the most hazardous
locations• Removes the worst bottlenecks• More compact interchange• Does not add through lanes• Within existing right-of-way• Minimizes outside walls• Two restricted ramp movements
• Delaware ramp to I-70 only• Pennsylvania exit from I-65 only
Preliminary Preferred Alternative
3/26/19
North Split West Leg
Current
Proposed
North Split Interchange Area
I-70
I-65
I-70I-65
Current Proposed
North Split South Leg
I-65 I-70I-70
I-65
Current Proposed
North Split Project
Reconstruct the Interchange• Replace pavement and bridges• Address major safety problems• Eliminate bottlenecks to improve level of service
• Provide smaller footprint and modern design
Consider the Neighborhood Context• Do not add through lanes• Minimize outside walls• Enhance neighborhood integration• Provide neighborhood connectivity
CSS Neighborhood Workshop
CSS Process
What is CSS?“Context Sensitive Solutions and Design" (CSS/D) is a collaborative, interdisciplinary decision‐making process and design approach that involves all stakeholders to develop a transportation facility that fits
its physical setting.‐ US Department of Transportation Federal Highway Administration
CSS Process
What are we trying to do with our process?Develop a series of design recommendations that aid the integration of
the new interchange (the current Preferred Alternative) into the surrounding community.
CSS Process
What are some parameters of the CSS analysis?
• Interchange project• Needs to be constructed in the next 3 years• Must connect to existing elevated interstates• INDOT is open to partnerships• Enhancements evaluated with maintenance in mind
CSS Process
What are we trying to understand with our process?
Character and themesTreatment typologyBasic materials
Community connectionsCommunity response
CSS Process: What will we be examining?
CSS Process: What will we be examining?
CSS Process: What will we be examining?
CSS Process: What will we be examining?
CSS Process: What will we be examining?
CSS Process
North Split CSS Design Process
Part 1: VisioningPurpose is to identify overall design vision, specifically in terms of character and theme, and to establish the type and extents of
applications for consideration.
CSS Process
North Split CSS Design Process
Part 2: Develop Preliminary Design Treatments
Begin to show how character and theme can translate to design treatment concepts.
CSS Process
North Split CSS Design Process
Part 3: Develop CSS Design Guidelines Package
Finalize conceptual treatments into design guidelines.
CSS Process
Next Steps…
• Continue to collect and document the Inventory and Assessment of the surrounding context
• Neighborhood Workshops
CSS Process
Workshop Orientation ‐ Station 1: CSS OverviewCSS Process
Workshop Orientation ‐ Station 2: ContextCSS Process
CSS Process
Workshop Orientation ‐ Station 2: Context
TELL US: Feedback
Opportunity
Workshop Orientation ‐ Station 3: PrioritiesCSS Process
CSS Process
Workshop Orientation ‐ Station 3: Priorities
TELL US: Feedback
Opportunity
CSS Process
Workshop Orientation – Feedback Form
TELL US: Feedback
Opportunity
Project Information: www.northsplit.comSubmit Feedback: [email protected]
CONTACT:Ali HernandezPublic InvolvementPO Box 44141Indianapolis, IN 46244Phone: 317.749.0309
WORKSHOP OPEN HOUSE