mount pleasant junior school meeting may 5
TRANSCRIPT
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EGLINTON JUNIOR PUBLIC
SCHOOL
Jamie Robinson
Director, Community Relations & Communications,
Toronto Transit Expansion, Capital Projects Group
May 2015
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Agenda
• Eglinton Crosstown LRT Project
• Mount Pleasant Headwall Construction
• Mount Pleasant Station Concept
• Tunnel Ventilation at LRT Stations
• Property Requirement
• Traffic Management During Construction
• Impacts on Transit Users and Pedestrians
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MSF – Maintenance & Storage Facility
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Eglinton Crosstown LRT
Project
• $5.4 B (2010$), funded by the Province of Ontario
• 19 kilometres east-west LRT from Kennedy to
Jane/Black Creek, including 10 kilometres of tunnel
• Connections to Yonge-University-Spadina Subway,
Scarborough RT and GO Stouffville
• Up to 25 stations and stops
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Key Features and Timing
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West Tunnels / East Tunnel
West Tunnels
Contract: ECLC1-15
Contractor: Crosstown Transit
Constructors
Award Date: October 1, 2012
Final Completion: December 16, 2016
East Tunnel
Contract: ECLC1-17
Contractor: Aecon-Dragados
Joint Venture
Award Date: October 21, 2013
Final Completion: November 6, 2016
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Tunnel Boring Machine
• The construction of new tunnels under Eglinton Avenue is done by
tunnel boring machines (TBMs)
• Each TBM moves forward by pushing off against concrete segments
it has placed behind it to line the tunnel
• The operator advances the machine as soil is removed from the
TBM face through a conveyor system• The launch pit remains active for
removal of muck/spoils
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Sequence of Tunnel Drive
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Mount Pleasant Headwall Construction
Possible Jet Grout
Plant location
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Jet Grout Rig
Jet grout rigs will be
used for headwall
construction at
future stations and
the extraction shaft
at Yonge Street
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Jet Grout Plant - Sutherland / Donlea
Jet Grout rigs will be used for headwall construction at future stations, cross-passages and
emergency exits.
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Timeline for Mount Pleasant Headwall Works
With appropriate permissions in place, Metrolinx’ contractor will:
• Conduct some utility relocation before headwall construction
• Install fencing and secure the perimeter
• Install grout lines in the roadway
• Jet grout plant will be set up prior to the headwall
construction
• Begin Mount Pleasant headwall construction in late Summer
2015
• Approximately 4-6 months anticipated at each wall
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Mt Pleasant Station
Preliminary Station Concept
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Mount Pleasant Station
Longitudinal Section
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Mount Pleasant Station
Primary Entrance
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Mount Pleasant Station
Secondary Entrance
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West End TVF Plant
East End TVF Plant
Tunnel Ventilation at LRT Stations
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Above Grade Ventilation Requirements
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Passive Piston Action
Emergency Fan Boost
Typical Fan Plants
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Mt Pleasant Station Emergency Ventilation Shafts
• East emergency ventilation shafts will be
combined with the Secondary Entrance building
• West emergency ventilation shafts will be a
stand alone structure in the Brownlow Avenue
boulevard
• Further analysis and detailed design will be
completed by Project Co
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Example of TTC Vent Shaft at Bayview Station
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Example of TTC Vent Shaft at Bessarion
Station
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Property Requirements
• Part 1 – Construction
and maintenance access
for ventilation shaft
(permanent easement)
• Part 2 – Ventilation shaft
equipment below grade
(fee simple subsurface)
• Part 3 – Construction
Staging (temporary)
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Property Requirements
• Part 1 – Construction
and maintenance access
for ventilation shaft
(permanent easement)
• Part 2 – Ventilation shaft
equipment below grade
(fee simple subsurface)
• Part 3 – Construction
Staging (temporary)
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Property Requirements
• TDSB has been engaged on the property
requirements and discussions have been on-going
with Metrolinx.
• Commencement date for permanent and temporary
requirements is October 15, 2015.
• Duration is 4 years, plus an option to renew for 1
additional year.
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TDSB Proposed Alternative
• TDSB proposed an
alternative vent shaft
location
• Vent shaft would be on
TDSB property instead of
City property (shift from blue
area to red area on drawing)
• Intent to reduce construction
impacts to parking area and
site operations
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Evaluation of TDSB Proposed Alternative
• Vent shaft location proposed by TDSB – Pros:
– Closer to the station box
– Could result in less disruption during construction
• Vent shaft location proposed by TDSB – Cons:
– Vent shaft is more visible adjacent to the school and fronting on Eglinton
– Vent shaft is closer to openings in the school buildings. The vent shaft must be a
minimum of 12 metres (horizontal distance) from any operable windows or 2.5 metres
above any operable windows.
– Will cause permanent reduction in TDSB staff parking area
– Depending on height of the vent shaft, it could block sightlines for service vehicles
entering and exiting the loading area
– Could cause impacts to the existing school structure/ foundations
– The work zone, including cranes and other large machinery, would be closer to the
school
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Evaluation of TDSB Proposed Alternative
• Based on preliminary design and engineering by
Metrolinx, the Brownlow boulevard was determined
to be the best location from a technical perspective
• The vent shaft location proposed by TDSB will not
eliminate disruption to normal parking, garbage and
deliveries during construction
• In the long term, the current vent shaft location
selected by Metrolinx is better for TDSB as it does
not permanently affect parking, garbage or delivery
operations
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Roles and Responsibilities
• Metrolinx is managing the construction project.
• City reviews Metrolinx proposals for interim traffic control
measures during construction.
• Toronto Police, City Transportation and Metrolinx meet
regularly to discuss issues and project needs such as
enforcement, traffic management and parking.
• City is responsible for approving any temporary and
permanent changes to turn restrictions, traffic calming,
etc.
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Our Approach to Traffic Management
• Maintain a minimum of one lane eastbound and
westbound on Eglinton in construction work zones
• Buses and general traffic will share this lane
• Additional lanes will be provided if space allows
• Metrolinx will work with City of Toronto Transportation,
local elected officials and neighbours to monitor local
traffic
• Signal timing may be modified and turning restrictions
may be added or relaxed to improve the flow
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Traffic Lane Reductions
Temporary road closure,
local traffic only
Traffic reduced to one lane
in each direction
Proper City permitted traffic signage will be installed
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Transit Services during Tunnel Construction
• Both eastbound and westbound TTC stops in the
affected area may be shifted and relocated for the
safety of transit riders
• Watch for TTC posted signs indicating the adjusted
stop locations
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Pedestrians
• In the construction zone, for temporary sidewalks or
existing sidewalks the goal is to maintain minimum
1.5 metre sidewalk widths wherever possible
• Access to properties from sidewalks should be
maintained
• Some sections of sidewalk may be closed and
crossings will be available at traffic signals
• Please take care when travelling near construction.
Watch for additional signage directing pedestrians
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Pedestrian Detours
Sign directing pedestrians Temporary detour of
pedestrian sidewalks may
be required
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Crosstown Community Relations Team
East Community Office
660 Eglinton Avenue East
(Sunnybrook Plaza at Bayview and Eglinton, next to Home
Hardware)
E-mail: [email protected]
Online: www.thecrosstown.ca
Tel: 416-482-7411
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