Download - West Open House - Progress Update Sept 2014
CROSSTOWN
CONSTRUCTION UPDATE
FALL 2014
Welcome to the Open House
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 kilometers of
tunnel
– Connections to Yonge-University-Spadina
Subway, Scarborough RT and GO Stouffville
– Up to 26 stations
Tunnelling Works 2014-2016
Construction Timeline
• At future station locations underground structures (emergency exits, cross passages) utility relocation and headwall installation are expected to last approximately six to eight months on average
• When the TBMs reach Eglinton West Station, they will be extracted using a shaft located just west of Allen Road.
• The TBMs will be refurbished and re-launched just east of Allen Road, for the second phase of tunnelling to Yonge Street.
• Tunnelling activities to Yonge are expected to be completed by December 2016
• Following the completion of tunnelling works, the sites will be turned over to the Metrolinx station contractor in two phases; west of Allen Road (2014) Allen Road to Yonge (2015)
• Station construction expected to begin Spring/Summer 2015
Tunnel Drive Works 2014
• Headwalls are temporary support walls for future
excavation of the LRT stations.
• Made of concrete and installed to the depth of the
future track level
• Jet Grout method of installation will be used on
headwalls east of Allen Road
• Machinery including drill rigs, grout tanks,
excavators and other equipment
Tunnel Drive Sequence
Construct
Extraction
Shaft
Construct
Tunnel Launch
Shaft
Tunnel Drive Sequence
Install Jet Grout
Block
“Headwalls”
from Street
Level
Commence
Mining Twin
Tunnels
Tunnel Drive Sequence
Mine Through
Jet Grout
Blocks and
Tunnel to
Extraction Shaft
Station Construction
After Tunnel Contract:
• Install Station Sidewall
and Headwall
• Excavate to Tunnel,
Remove Concrete
Tunnel Liners and
Begin Station
Construction
Tunnel Boring Machines
• 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
Launch Shaft Tunnel Boring Machine
Tunnel Drive Works Current Status
• In 2013 the majority of the tunnel drive and associated works took place between Black Creek Drive and the vicinity of Allen Road
• In 2014 work continues east of Allen Road
• Crews continue the construction of headwalls and utility relocation at future station sites along Eglinton Avenue West
• TBM 1 is well underway with tunnelling; TBM 1 is now located west of Oakwood Avenue
• TBM 2, a twin machine is following closely behind
Jet Grout Headwalls
Jet Grout Drill Rig
Grout Plant for Headwall Construction
Why a grout plant at Peveril Hill North?
• Headwalls for Bathurst required
• Peveril Hill North adjacent to work site
• There will be no access to/from Eglinton Avenue West at Peveril Hill North
• Peveril Hill North between Dewbourne Avenue and Eglinton Avenue will be local access only
• Allows efficient use of space
• Peveril Hill North preferred because of reduced footprint on Eglinton Avenue
The site will occupy City of Toronto
roadway
The plant will be located on Peveril
Hill N requiring closure of the
street at Eglinton
A fence will enclose the site
The plant will service headwall
construction for Bathurst Station
on the north and south sides of the
street
The plant is expected to be in
place for approximately 6 months
Grout Plant at Peveril Hill N
Jet Grout
Advantages of jet grout
technique for headwall
installation:
Reduce requirement for
extensive utility relocation
Overall construction time
savings
Timeline for Bathurst Headwall Works
With appropriate permissions in place Metrolinx’ contractor will:
• Begin to set up the grout plant at Peveril Hill N.
• Install fencing and secure the perimeter
• Install grout lines in the roadway
• Test works
• Begin Bathurst headwall construction works
• Scheduled to commence in September 2014
• 6 months anticipated
Timeline for Avenue Headwall Works
With appropriate permissions in place Metrolinx’
contractor will:
• Begin to set up the grout plant at Highbourne Avenue
• Install fencing and secure the perimeter
• Install grout lines in the roadway
• Test works
• Begin Avenue Road headwalls in Fall 2014
• 6 months anticipated at each wall
Utility Relocations
• Depending on site conditions: gas, hydro, water mains, sewers, lighting and telephone and cable lines may be relocated to allow for construction
• In the vicinity of the launch and extraction shafts Metrolinx is co-ordinating with Bell, Enbridge, Toronto Water, Toronto Hydro and Cogeco regarding required relocations
• In most cases utility relocations will be undertaken by Metrolinx contractor
• Enbridge will coordinate works with Metrolinx
Bathurst Headwall Locations
Avenue Headwall Locations
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
Emergency Exit Buildings and Cross
Passages
• Cross passage and emergency exit construction will take place between late 2014 through late 2016
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
• Metrolinx coordinates with TTC for service
adjustments required due to construction. TTC is
responsible for bus detours and rerouting
Cross Passages
• A cross passage is a tunnel connecting the eastbound and westbound tunnels for maintenance and/or emergency purposes
• Crews will be building cross passages before and after the tunnels are complete
• Some construction works will be visible at street level while other works take place underground
Pedestrians
• In the construction zone for temporary sidewalks or
existing sidewalks the goal is to maintain 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
Next Steps
• Community Relations will outreach to businesses,
specific condos and apartment buildings to raise
awareness of the site and planned works
• Co-ordination with TTC will continue to ensure
continued bus service
• Co-ordination with local emergency services also
continues to ensure service levels