This document provides information on the construction of new tunnels under Eglinton Avenue for the Eglinton Crosstown project using tunnel boring machines (TBMs). It discusses the TBM construction process including the launch shaft construction timeline, how TBMs remove soil and install concrete segments as they advance, and preparations for launching the first TBM. It also summarizes plans for the tunnel dimensions, ventilation system, and muck removal during mining operations.

1. Open House
Avenue Road to Bayview Avenue
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2. East Tunnel Construction Timeline
 Contract award
 Construction of launch shaft – 1 year
 Utility relocation at headwalls
 Construction of headwalls – 6 to 8 months
 Construction of extraction shaft at Yonge Street
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3. 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.
 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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4. Launch of the Tunnel Boring Machine
 The Eglinton Crosstown
tunnel will consist of sideby-side or twin tunnels.
 Each tunnel will be 6.75
metres internal diameter.
 Initially, one machine will
begin excavation; the
other will follow on a
parallel course soon after.
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5. Eye of the tunnel
The TBM is carefully
aligned with the eye of the
tunnel.
The machine will break
through this focal point to
start excavation.
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6. Preparing the site
 Workers lay track during the
assembly and launch phase
 The pieces of the TBMs are
lowered into the shaft and
assembled
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7. Launch Shaft Operations
 To keep the tunnel safe for the
crew a ventilation system pumps
fresh air into the tunnel and
exhaust air is moved out of the
tunnel.
 Cranes remain in position during
the mining operation; muck will be
hauled out and new concrete tunnel
segments will be delivered.
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8. Tunnelling Begins
 Tunnel boring machines work beneath
Eglinton Avenue
 Business activities and traffic will
continue with this method.
 A single TBM will tunnel 75 metres per
week.
 Each machine is capable of moving 500
cubic metres of earth per day.
 The machines are made in Toronto by
Caterpillar Tunnelling Canada
Corporation, formerly LOVAT, a world
leader in tunnel boring machine
manufacturing.
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9. East Tunnels Launch Shaft
 To Brentcliffe
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To Leslie 

10. Emergency Exit Buildings and Cross Passages
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11. Crosstown Principles of Design Excellence
1. A strong conceptual narrative vision across the system
2. Design that elevates the quality of the public transit experience
3. Civic caliber and scale of built form and materials
4. Clarity and simplicity of architectural expression through
integrated design of building systems and elements
5. Responsiveness to contextual, local and future conditions
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12. 1. A Strong Conceptual Narrative Vision across the System
A coherent and unified
architectural strategy for the
entire Crosstown line
Clear strategy for
consistent and variable
elements
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13. 2. Design that Elevates the Quality of the Public Transit Experience
Openness through optimal
spatial penetration
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Optimized daylight penetration

14. 3. Civic Calibre and Scale of Built Form and Materials
Unified ground plane inside and
outside stations and at stops
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Civic materials and character of
open spaces

15. 4. Clarity and Simplicity of Architectural Expression through
Integrated Building Systems and Elements
Integrated structural,
mechanical, and electrical
systems
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A clear hierarchy and plan
for user-centred integrated
information

16. 5. Responsiveness to Contextual, Local and future Conditions
Integration with historic elements
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Sustainability measures

17. Crosstown Accessible Features: Stations
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Accessible path from street to platform
Accessible routes identified
Station attendant
Platform edge tactile strip
Wayfinding tiles on platforms
Near level boarding of trains
Platform edge illumination
Audible messages throughout stations
Signage with accessible features
Designated Waiting Area
Colour contrast between station walls and floors
Equipment mounted at accessible heights
Benches

18. Crosstown Accessibility Features: Stops
 Platform edge tactile strip
 Platform edge illumination
 Colour contrast at between walls and platform
 Equipment mounted at accessible heights
 Sheltered benches
 Sheltered wheelchair area
 Passenger assistance intercom
 Ramp access to platforms
 Signage with accessible features
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19. Avenue Station
Local Context: Demand
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20. Avenue Road Local Context:
Land Use
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21. Avenue Road
Secondary Entrance
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22. Avenue Road
Longitudinal Section
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23. Eglinton Station
Longitudinal Section through LRT and Eglinton
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24. Eglinton Station
Longitudinal Section through Subway and Yonge Street
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25. Eglinton Station
Street Level
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26. Eglinton Station
Upper Concourse Level Yonge
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27. Mount Pleasant Station
Local Context: Demand
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28. Mount Pleasant Station
Local Context: Land Use
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29. Mount Pleasant Station
Profile View
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30. Mount Pleasant Station
Plan View
Possible future entrance
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31. Mount Pleasant Station
Preliminary Station Concept
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32. Mount Pleasant Station
Longitudinal Section
Eglinto
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o
M
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un
as
le
t
an
venue

33. Mount Pleasant Station
Primary Entrance
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34. Mount Pleasant Station
Secondary Entrance
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35. Bayview Station
Local Context: Demand
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36. Bayview Station
Local Context: Land Use
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37. Bayview Station
Longitudinal Section
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38. Bayview Station
Primary Entrance
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39. Bayview Station
Secondary Entrance
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40. New Approach:
Alternative Financing and Procurement (AFP)
Public Private Partnership models have been underway in Canada for 20
years
165 projects
21 transportation projects
$51 billion total project value
Canada-wide examples
 Canada Line rapid transit project (Vancouver)
 Autoroute 25 (Montréal)
 Trans-Canada Highway (Atlantic Canada)
Ontario examples
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Pan Am games athletes village
Ottawa Light Rail Transit
Highway 407 East Phase 1
The Rt. Hon. Herb Gray Parkway (Formerly the Windsor Essex Parkway

41. Owner’s Role Changes with AFP
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42. New Approach:
Advantages of (AFP)
 Increased capacity to bring projects to market
 Transfer of risk
• Appropriate risks transferred to private sector to ensure “on time, on budget” delivery
and offer value for money
• Design, construction, cost escalation, schedule delays, operations, maintenance, life
cycle, financial risk
 Cost certainty
• Optimal cost combination: combines capital, maintenance and life cycle costs
• Integration of design and construction
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43. New Approach:
Roles and Responsibilities in the Design Build Finance
Maintain model
Metrolinx Role
 Design
• Overall scope (inclusion of
maintenance, operations, etc.)
• Project-Specific Output
Specifications (with Consultant
team)
• Real Estate Acquisition (with
City of Toronto)
 Build
• Oversee Construction Phase
• Quality Assurance
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 Finance
• Project Budget
• With Infrastructure Ontario run a
competetive prcurement process;
select the winning contractor
 Maintain
• Testing & Commissioning (with
Toronto Transit Commission)
• Safety Certification and Project
Acceptance
 TTC to operate
• Integrated with existing TTC
system