mineral avenue corridor assessmentbiography - aaron heumann, pe, ptoe •currently city of littleton...
TRANSCRIPT
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ITE 2017 Western District Annual Meeting
San Diego, CA June 21st
Mineral Avenue Corridor Assessment
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Biography - Aaron Heumann, PE, PTOE
• Currently City of Littleton Transportation Engineering Manager
• 24 Years Combined Experience on the Public & Private Sides
• CO/WY Section Past President
• 2018 Joint Western District & Texas District Meeting Co-Chair
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Presentation Outline
• Project Background
• Assessment Methodology
• Study Process
• Implementation Strategy
• Results
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Background
• Mineral Avenue
• Study Area
• Neighborhoods
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Study AreaNeighborhoods:
- Meadowbrook
- Polo Reserve-Polo Ridge Farms
- Polo Reserve-The Sanctuary
- Overlook at Platte Valley
- Pinnacle at Mountain Gate
- The Overlook Plateau
- Outlook (The Meadows at Platte Valley)
- Corridor Study Limits
- Mineral Ave Regional Trail
- City Limits
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Methodology
• City Pilot Project
• Resident Engagement
• Community Meetings
• Cooperative/Iterative Process
Resident Input
Potential
Solutions
Concept Design
Phasing
Plan
Cost Estimates
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Process
• Community Involvement
• Information Gathering
• Issues Assessment
• Preliminary Solutions
• Implementation Strategy
• Recommendations to City Council
• Implementation
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Community Involvement
• Project Webpage on City Website
• Neighborhood Meetings
• Development of Mission, Goals & Users
• Identification of Issues & Concerns
• Feedback on Data, Assessment,
Solutions & Implementation Strategy
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Info & Data
• Past Studies
• Physical Environment & Surrounding Land Uses
• Vehicular Volumes
• Pedestrian/Bicycle Activity
• Vehicle Speeds
• Vehicle Intersection Delays
• Corridor Accident History
• Police Enforcement History
• Transit & School Buses
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Assessment
Key Resident Perceived Issues Identified:
• Traffic Growth for Commuting & Commercial Land Use
• Increased Number & Severity of Accidents
• Speed Traffic Creating Unsafe Conditions
• Delay Accessing Adjacent Neighborhoods
➢ Review with residents to verify issues being addressed
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Preliminary Solutions
• Roadway Changes
• Intersection Modifications
• Side Street Improvements
• Access Revisions
• Traffic Control Considerations
➢ Review with residents to identify solutions to move forward with
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Implementation Strategy
• Concept Design
• Phasing Plan
• Cost Estimates
➢Review with residents to develop an agreed upon strategy
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Designs
• Mineral Avenue Modifications
• Platte Canyon Road Movements
• Side Street Improvements
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Mineral Avenue Modifications• Recommended
• Right Turn Acceleration/Deceleration Lane• Lane Width Narrowing• Center Median Widening• Speed Limit Change• Specific U-turn Locations• Deter Vehicle Queues from Blocking Intersections
• Not Recommended• Median Nose Reduction• Constructability Issues• Cost Prohibitive
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Platte Canyon Road Movements• Recommended
• Mineral Avenue Intersection• Dual NB & SB Left Turn Lanes• Traffic Signal Modifications• Channelized NB Right Turn Lane
• Mineral Drive Intersection• Full Movement Access
• Not Recommended• Meadowbrook Access to Platte Canyon Road• Not Supported by Residents• Cost Prohibitive
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Min
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Min
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Lanes
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Min
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Dual Left Turn
Lanes
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Signal
Modifications
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Min
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Channelization
Island
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Min
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Movement
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Min
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Channelization
Islands
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Min
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Dual Left Turn
Lanes
Channelization
Islands
Full
Movement
Channelization
Island
Signal
Modifications
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Side Street Improvements• Provisional Revisions
– Crosswalk Striping– Trail Signage– Addition of Blank Out Signs on Polo Ridge Drive Pedestrian Signal
• Ultimate Alterations– Curb Extensions– Raised Crosswalk– Additional Landscaping
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Mineral Avenue
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Mineral Avenue
PROVISIONAL
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Mineral Avenue
ULTIMATE
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Mineral Avenue
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Raised Crosswalk
ULTIMATE
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Mineral AvenueD
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Landscaping
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ULTIMATE
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Mineral Avenue
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ULTIMATE
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Mineral Avenue
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ULTIMATE
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Mineral Avenue
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ULTIMATE
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Mineral Avenue
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ULTIMATE
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Phasing Plan
• Phase 1• Side Street Provisional Improvements –
Crosswalks, Trail Signage & Blank Out Signs• Mineral Avenue Lane Reassignments
• Phase 2• Platte Canyon Road/Mineral Avenue
Intersection
• Phase 3• Platte Canyon Road/Mineral Drive Intersection• Side Street Ultimate Improvements – Raised
Crosswalks, Curb Extensions & Landscaping
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Phase Project Improvements Cost
Cost Estimating
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Phase Project Improvements Cost
1A Side Street Provisional Improvements
• Crosswalk Striping• Trail Signage• Blank Out Signs on Polo Ridge Drive Pedestrian Signal
$11,000
1B Mineral Avenue Lane Reassignment
• Right Turn Acceleration/Deceleration Lane• Lane Width Narrowing• Center Median Widening• Speed Limit Change• Specific U-turn Locations• Deter Vehicle Queues from Blocking Intersections
$35,000
Cost Estimating
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Phase Project Improvements Cost
1A Side Street Provisional Improvements
• Crosswalk Striping• Trail Signage• Blank Out Signs on Polo Ridge Drive Pedestrian Signal
$11,000
1B Mineral Avenue Lane Reassignment
• Right Turn Acceleration/Deceleration Lane• Lane Width Narrowing• Center Median Widening• Speed Limit Change• Specific U-turn Locations• Deter Vehicle Queues from Blocking Intersections
$35,000
2A Platte Canyon Road/Mineral Avenue Intersection
• Dual NB & SB Left Turn Lanes• Traffic Signal Modifications• Channelized NB Right Turn Lane
$92,000
Cost Estimating
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Phase Project Improvements Cost
1A Side Street Provisional Improvements
• Crosswalk Striping• Trail Signage• Blank Out Signs on Polo Ridge Drive Pedestrian Signal
$11,000
1B Mineral Avenue Lane Reassignment
• Right Turn Acceleration/Deceleration Lane• Lane Width Narrowing• Center Median Widening• Speed Limit Change• Specific U-turn Locations• Deter Vehicle Queues from Blocking Intersections
$35,000
2A Platte Canyon Road/Mineral Avenue Intersection
• Dual NB & SB Left Turn Lanes• Traffic Signal Modifications• Channelized NB Right Turn Lane
$92,000
3A Platte Canyon Road/Mineral Drive Intersection
• Full Movement Access $107,000
3B Side Street Ultimate Improvements
• Curb Extensions
• Raised Crosswalk
• Additional Landscaping
$246,000
Cost Estimating
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Phase Project Improvements Cost
1A Side Street Provisional Improvements
• Crosswalk Striping• Trail Signage• Blank Out Signs on Polo Ridge Drive Pedestrian Signal
$11,000
1B Mineral Avenue Lane Reassignment
• Right Turn Acceleration/Deceleration Lane• Lane Width Narrowing• Center Median Widening• Speed Limit Change• Specific U-turn Locations• Deter Vehicle Queues from Blocking Intersections
$35,000
2A Platte Canyon Road/Mineral Avenue Intersection
• Dual NB & SB Left Turn Lanes• Traffic Signal Modifications• Channelized NB Right Turn Lane
$92,000
3A Platte Canyon Road/Mineral Drive Intersection
• Full Movement Access $107,000
3B Side Street Ultimate Improvements
• Curb Extensions
• Raised Crosswalk
• Additional Landscaping
$246,000
Total $491,000
Cost Estimating
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Funding
• Public Works Operating Budget• Open Space Funds
• Capital Improvement Project Program
• State & Federal Grant Programs
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Project Status To Date
• Community Engaged & Pleased with Process
• City Council Approved• Phase 1 Implementation
Complete• After Data Collected• Phase 2 & 3 Still to Come
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• Improved Operations Due to U-turn Relocation
• Reduced Speeds Due to Lane Narrowing, RT Accel/Decel & Lower Speed Limit
• Decrease Delays Due to Two-stage Left Turn Option
• Corridor Less Intimidating to Access
Resident Perceptions
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• Volume Increase by <5%• Slight Growth in Traffic at
Intersections• Decrease in Corridor Traffic
Speeds by ~5 mph• Comparable Delays• Fewer Reported Accidents &
Lower Incident of Injury Accidents
After Data Indications
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• Corridor Functioning Safer for Bicyclists & Peds• Corridor More Accessible for Side Streets• Minimal Impact to Vehicle Operations
➢ Demonstrated Benefits of Resident Involvement & Good Communication
➢ Safety Improvements with Minimal Impacts to Operations & Congestion
➢ City Applying Process to Other Projects
Project Takeaways
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Comments or Questions