Mineral Avenue Corridor Assessment. ITE 2017 Western District Annual Meeting San Diego, CA June 21 st

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1 Mineral Avenue Corridor Assessment ITE 2017 Western District Annual Meeting San Diego, CA June 21 st

2 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

3 Presentation Outline Project Background Assessment Methodology Study Process Implementation Strategy Results

4 Background Mineral Avenue Study Area Neighborhoods

5 Study Area Neighborhoods: - 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

6 Methodology City Pilot Project Resident Engagement Community Meetings Cooperative/Iterative Process Cost Estimates Phasing Plan Resident Input Concept Design Potential Solutions

7 Process Community Involvement Information Gathering Issues Assessment Preliminary Solutions Implementation Strategy Recommendations to City Council Implementation

8 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

9 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

10 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

11 Preliminary Solutions Roadway Changes Intersection Modifications Side Street Improvements Access Revisions Traffic Control Considerations Review with residents to identify solutions to move forward with

12 Implementation Strategy Concept Design Phasing Plan Cost Estimates Review with residents to develop an agreed upon strategy

13 Designs Mineral Avenue Modifications Platte Canyon Road Movements Side Street Improvements

14 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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20 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

21 N Mineral Ave

22 Mineral Ave N Dual Left Turn Lanes

23 Mineral Ave N Dual Left Turn Lanes

24 Mineral Ave N Signal Modifications

25 Mineral Ave N Channelization Island

26 Mineral Ave N Full Movement

27 Mineral Ave N Channelization Islands

28 Mineral Ave N Channelization Island Channelization Islands Dual Left Turn Lanes Signal Modifications Full Movement

29 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

30 Mineral Avenue Dusk Court

31 CROSSING SLOW DOWN RIDE SAFE Dusk Court PROVISIONAL Mineral Avenue CROSSING SLOW DOWN RIDE SAFE

32 CROSSING SLOW DOWN RIDE SAFE Dusk Court Curb Extensions ULTIMATE Mineral Avenue CROSSING SLOW DOWN RIDE SAFE

33 CROSSING SLOW DOWN RIDE SAFE Dusk Court ULTIMATE Mineral Avenue Raised Crosswalk CROSSING SLOW DOWN RIDE SAFE

34 CROSSING SLOW DOWN RIDE SAFE Dusk Court ULTIMATE Mineral Avenue Landscaping CROSSING SLOW DOWN RIDE SAFE

35 CROSSING SLOW DOWN RIDE SAFE Dusk Court ULTIMATE Mineral Avenue CROSSING SLOW DOWN RIDE SAFE

36 CROSSING SLOW DOWN RIDE SAFE Dusk Court ULTIMATE Mineral Avenue CROSSING SLOW DOWN RIDE SAFE

37 CROSSING SLOW DOWN RIDE SAFE Dusk Court ULTIMATE Mineral Avenue CROSSING SLOW DOWN RIDE SAFE

38 CROSSING SLOW DOWN RIDE SAFE Dusk Court ULTIMATE Mineral Avenue CROSSING SLOW DOWN RIDE SAFE

39 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

40 Cost Estimating Phase Project Improvements Cost

41 Phase Project Improvements Cost 1A 1B Side Street Provisional Improvements Mineral Avenue Lane Reassignment Cost Estimating Crosswalk Striping Trail Signage Blank Out Signs on Polo Ridge Drive Pedestrian Signal Right Turn Acceleration/Deceleration Lane Lane Width Narrowing Center Median Widening Speed Limit Change Specific U-turn Locations Deter Vehicle Queues from Blocking Intersections $11,000 $35,000

42 Phase Project Improvements Cost 1A 1B 2A Side Street Provisional Improvements Mineral Avenue Lane Reassignment Platte Canyon Road/Mineral Avenue Intersection Cost Estimating Crosswalk Striping Trail Signage Blank Out Signs on Polo Ridge Drive Pedestrian Signal Right Turn Acceleration/Deceleration Lane Lane Width Narrowing Center Median Widening Speed Limit Change Specific U-turn Locations Deter Vehicle Queues from Blocking Intersections Dual NB & SB Left Turn Lanes Traffic Signal Modifications Channelized NB Right Turn Lane $11,000 $35,000 $92,000

43 Phase Project Improvements Cost 1A 1B 2A 3A 3B Side Street Provisional Improvements Mineral Avenue Lane Reassignment Platte Canyon Road/Mineral Avenue Intersection Platte Canyon Road/Mineral Drive Intersection Side Street Ultimate Improvements Cost Estimating Crosswalk Striping Trail Signage Blank Out Signs on Polo Ridge Drive Pedestrian Signal Right Turn Acceleration/Deceleration Lane Lane Width Narrowing Center Median Widening Speed Limit Change Specific U-turn Locations Deter Vehicle Queues from Blocking Intersections Dual NB & SB Left Turn Lanes Traffic Signal Modifications Channelized NB Right Turn Lane $11,000 $35,000 $92,000 Full Movement Access $107,000 Curb Extensions Raised Crosswalk Additional Landscaping $246,000

44 Phase Project Improvements Cost 1A 1B 2A 3A 3B Side Street Provisional Improvements Mineral Avenue Lane Reassignment Platte Canyon Road/Mineral Avenue Intersection Platte Canyon Road/Mineral Drive Intersection Side Street Ultimate Improvements Cost Estimating Crosswalk Striping Trail Signage Blank Out Signs on Polo Ridge Drive Pedestrian Signal Right Turn Acceleration/Deceleration Lane Lane Width Narrowing Center Median Widening Speed Limit Change Specific U-turn Locations Deter Vehicle Queues from Blocking Intersections Dual NB & SB Left Turn Lanes Traffic Signal Modifications Channelized NB Right Turn Lane $11,000 $35,000 $92,000 Full Movement Access $107,000 Curb Extensions Raised Crosswalk Additional Landscaping $246,000 Total $491,000

45 Funding Public Works Operating Budget Open Space Funds Capital Improvement Project Program State & Federal Grant Programs

46 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

47 Resident Perceptions 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

48 After Data Indications 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

49 Project Takeaways 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

50 Comments or Questions