gre-35-4.30 superstreets presentations/tuesday/12/smith_12.pdfgre-35-4.30 superstreets pid 102421...
TRANSCRIPT
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John R. Kasich, Jerry Wray,Ohio Governor ODOT Director
GRE-35-4.30SuperStreets
PID 102421October 25, 2016
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Project History
• Access Ohio 2040 –US 35 is designated as a Statewide Highway Corridor, a corridor with statewide significance for Ohio’s economic vitality.
• Travel efficiency is the predominant transportation issue in the project area.
• US 35, with five at‐grade intersections within the project area, does not have enough capacity to serve existing transportation demands.
• The levels of service are at or close to failing at the US 35/Factory Road intersection. By 2030, US 35 at Factory, Orchard Lane, and Valley‐Trebein are forecast to be Level of Service (LOS) F.
• Final component of a long term program to upgrade US 35, between Dayton and into West Virginia.
• This component and overall project has been highly supported by Local and State Officials.
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Overall Project Area
Shakertown Rd &Factory Rd
US 35 &Factory Rd
US 35 &Orchard Ln US 35 &
Trebein Rd
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Community Involvement
• Conceptual Alternatives Studies - 2009
• Assessment of Feasible Solutions - 2011
• Community Stakeholder Groups
• Business Owner Groups
• Public Involvement Meetings
• Selection of Preferred Alternative- 2013
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Ultimate Solution
• Split Diamond Interchange at Factory Road to Orchard Lane and Folded Diamond Interchange at Valley Trebein Road
• Environmental Studies Complete• Stage 1 Plans Developed• Right of Way Plans Under Development• $ 120M Total Construction
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Split Diamond Interchanges
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Half Folded Diamond Interchange
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Chasing the Money
•$120M Construction Cost•TRAC Funding Limited•Local Partners Phasing •ODOT Safety Funding
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Planned Projects
• Shakertown Road Relocation • City of Beavercreek is developing the Shakertown Road Relocation as an effort to advance safety measures. Sale 2019 $3.4M
• Valley TrebeinRoad• ODOT Safety funds are being utilized to add a southbound right turn lane to reduce congestion on Trebein Road. Sale 2018 $500K
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What about us?
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Project Area Needs
• Congestion
• Safety
• Freight Movement
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Congestion
• No Build Travel times• 203 seconds EB• 166 seconds WB
• Total Delay• 126 seconds/vehicle EB• 91 seconds/vehicle WB
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Safety
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Freight
• 23,700 Tons of Freight per day
• $71.75 Million per day
• 20 hours of delay per peak hour for trucks
• 100 hours of delay for trucks per day
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Interim Solution for Factory / Orchard
•Superstreets• Performance Based Practical Design • Preliminary Plans in Progress• Smaller Environmental Footprint• Right of Way Acquisition Summer 2017• Design Build Contract Sale 2018• Estimated Construction Cost ‐ $13.7M
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Interim Solution – Superstreets
• Meets Project Purpose and Need• Improve Congestion & Safety
• Fundable Solution• Approximately $6M per intersection construction• Project funded through ODOT, Local and MVRPC funding sources• Will perform better than the existing signals for many years while interchange development and construction funding is pursued.
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What is a Superstreet
• It is a non‐traditional signalized intersection that can provide more capacity than a traditional traffic signal (like the one at Factory Road).
• It does not allow side street traffic to turn left or go straight through the main intersection – these movements turn right and do a u‐turnat a nearby signal to get to their desired path.
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Source: Wisconsin DOT
• Cross street (minor road) traffic turns right, then accesses U-turn to proceed in desired direction.
• Main and U-turn intersections can be either signalized (“Superstreet”) or not (“J-Turn”)
Superstreets Operation
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Why Superstreets
• Higher Capacity ‐ Breaks movements of a traditional 8 phase intersection (like at Factory Road) into several smaller 2 phase intersections. This allows more GREEN time to be directed to heavy movements (higher capacity compared to a traditional signal).
• Coordination ‐ You can coordinate both mainline directions independent of each other – this is only possible with a Superstreet.
• Safety – fewer conflict points.
• Reduced Delay
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Existing Signal at Factory Rd. PM
Eastbound
Proposed Superstreet at Factory Rd. Signal PM Eastbound
Signal Capacity – Maximum is 1,900 vehicles/hour/lane IF approach gets 100% of the green time (i.e., 3800 vehicles per hour for a 2 lane signalized approach)
• EB US35 Currently Gets approx. 60% of the green time
• 60% x 3,800 = 2,280 veh./hr. for EB US35 (approx.)
• Proposed Superstreet could give approx. 82% of the green time to EB US35
• 82% x 3,800 = 3,116 veh./hr. for EB US35 (approx.)
Proposed Superstreet signal can process 836 (3,116 – 2,280) more vehicles per hour for EB US35 compared to the existing signal/timing
For Comparison – a FREEWAY lane (i.e., interchange instead of intersection) can process approximately 2,300 veh/hr/lane (2 lanes = 4,600 veh/hr/lane approx.)
Higher Capacity Than Traditional Signal
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Safer Compared to Traditional Signals
• Less chance of severe angle crashes
• Fewer conflict points
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Reductions in Delay
• Reduction in Travel time by up to 23%
• Reduction in Total Delay by up to 51%
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Superstreet Overlay
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Additional Community Outreach
• Stakeholders Meeting
• City of Beavercreek Council Meeting
• City of Beavercreek Public Involvement Meeting
• Multiple Press Releases
• Individual Stakeholder Meetings
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Public Concerns
• More Signals?
• Bike/Pedestrian Movements
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Timing is Everything
• Higher Capacity ‐ Breaks movements of a traditional 8 phase intersection (like at Factory Road) into several smaller 2 phase intersections. This allows more GREEN time to be directed to heavy movements (higher capacity compared to a traditional signal).
• Coordination ‐ You can coordinate both mainline directions independent of each other – this is only possible with a Superstreet.
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Pedestrian “z” crossing
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Pedestrian-vehicle conflict points
28
ConventionalIntersection24 conflict points
RCUT Intersection8 conflict points
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Next Steps
•Preliminary Plans in Progress•Smaller Environmental Footprint•Additional Public Outreach 2017/2018•Right of Way Acquisition Summer 2017•Design Build Contract Sale 2018
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Questions