LEASIDE OPEN HOUSE

EAST TUNNEL CONSTRUCTION

September 2014

MSF – Maintenance & Storage Facility

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 26 stations

East Tunnel Construction Timeline

• At future station locations and underground structures

(emergency exits) utility relocation and headwall installation is

expected to last approximately six to eight months on average

at each location

• The deep excavation at Brentcliffe is expected to take up to 12

months to construct

• Tunnelling activities to Yonge are expected to be completed by

summer 2016

• Following the completion of tunnelling works, the site will be

turned over to the Metrolinx station contractor

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

Assembly of Tunnel Boring Machines

Launch Shaft

Construction of Launch Shaft near Brentcliffe

Construction workers are busy preparing the east

launch shaft in advance of the tunnel boring machines

Construction of Launch Shaft near Brentcliffe

In advance of secant pile installation, workers have built a

guide wall on the surface

TBM Launch - Vicinity of Brentcliffe Road and Eglinton

• Launch Shaft: a deep excavation located just east of

Brentcliffe where two tunnel boring machines will be

assembled and launched toward Yonge

• Utility relocation occurred before excavation began

• Contiguous concrete piles (columns) will support the

earth walls around the shaft

Sequence of Tunnel Drive

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

• Two methods of installation used: Secant Pile Walls

and Jet Grout

• Machinery including drill rigs, grout tanks, diggers

and other equipment

Utility Relocations

• Construction of the headwalls and shafts requires that some

utilities be moved safely out of the way

• Depending on site conditions: gas, hydro, water mains,

sewers, lighting and telephone and cable lines may be

relocated to allow for construction

• Metrolinx is coordinating with Bell, Enbridge, Toronto Water

and Toronto Hydro, Cogeco regarding required relocations

• In most cases utility relocations will be undertaken by

Metrolinx contractor

• Enbridge will coordinate gas relocation works with Metrolinx

Tunnel Drive Works 2014

Secant pile wall: formed by

intersecting concrete piles

Jet grout wall: uses engineered

grout to form wall on site

Jet Grout Headwalls

• Air, water and cement grout are simultaneously injected by a rotating rod at very high pressure

• All materials are natural inert materials and have no negative impact on ground water and the environment

Jet Grout Rig

Jet grout rigs will be

used for headwalls

construction at

future stations and

the extraction shaft

at Yonge Street

Laird West Headwall Construction

• Headwalls are underground support walls located at the east and

west ends of the station location

• In order to minimize road occupancy on Eglinton, the jet grout plant is

located on Sutherland, on the roadway at the northeast corner of

Sutherland and Eglinton

• The grout plant will be set up in early September 2014, followed by

the construction of the south half of the headwall. Utility work has

already been relocated

• Work will take place in two stages. Each stage is expected to last

approximately two to three months

• The grout plant will be at this location for the duration of both stage

one and stage two of headwall construction for approximately four to

six months

Laird West Headwall Construction

First stage – South headwall construction

• A work zone will be set-up on the southeast side of Eglinton and Sutherland Drive

Second stage – North headwall construction

• A work zone will be set-up on the northeast side of Eglinton and Sutherland Drive

Traffic Changes in the vicinity of Sutherland

• First stage: a single lane of traffic in each direction will be open on the north

side of Eglinton

• Second stage: a single lane of traffic in each direction will be open on the

south side of Eglinton

• Left turns from Eglinton to Sutherland for eastbound and right turns from

Eglinton to Sutherland for westbound traffic will be prohibited during both

stages

• The west driveway of Toronto Finnish-Canadian Senior Building at 795

Eglinton Ave E will not be accessible. The east driveway will remain open.

Metrolinx and its contractor will assist with any emergency access required

• No northbound through traffic on Sutherland will be allowed on the north

side of Eglinton. Northbound traffic on Sutherland must exit onto Eglinton

• Southbound traffic on Sutherland will NOT be affected

Pedestrian Detour in the vicinity of Sutherland

First Stage - South Headwall Construction

• Pedestrian sidewalk on the south side of Eglinton from

approximately east of Sutherland Drive to the west driveway of

Toronto Finnish-Canadian Senior Building at 795 Eglinton Avenue

East will be temporarily closed

• Pedestrians will be diverted to use the north Eglinton sidewalk and

cross at the intersection of Laird Drive and Eglinton Avenue East to

access the businesses located between Laird Drive and Sutherland

Drive along Eglinton. Please return to the south sidewalk at Laird

• The sidewalks in front of the businesses between Laird Drive and

Sutherland Drive will remain open. Metrolinx will provide business

signs indicating that the businesses are open

Pedestrian Detour in the vicinity of Sutherland

Pedestrian Detour in the vicinity of Sutherland

Second Stage - North Headwall Construction

• During the second stage of headwall construction, all sidewalks on

Eglinton Avenue East and Sutherland Drive will reopen

• In some cases, some sidewalks may require short-term temporary

closures for the safety of pedestrians. Please follow signs directing

pedestrians and take care when travelling near construction areas

Emergency Exit Buildings (EEBs)

• EEBs are built in between the stations when station

platforms are more than approximately 760 metres apart to

allow for easy evacuation of passengers

• The construction of an emergency exit building includes

the building of an evacuation pathway, a set of stairs from

the tunnel to ground level, and a small building on the

surface

• The scale of construction is similar to building a small-scale

underground station

• Generally, it takes up to 24 months to complete

construction at each EEB

Renderings of EEB on Eglinton near Donlea Avenue

Looking north

Looking south

Renderings of EEB on Eglinton near Petman Ave

Looking north

Looking south

Construction work at Donlea Avenue

Drilling rig in action installing secant piles for the

emergency exit building at Donlea Avenue

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 after the tunnels

have built at each location

• Some construction works (soil

dewatering) will be visible at

street level while most work

takes place underground

Emergency Exit Buildings and Cross Passages

• Cross passage and emergency exit construction will take place between late 2014 through late 2016

Donlea

Avenue

Petman

Avenue Walder

Avenue

Lillian

Street Rumsay

Road

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

Traffic Lane Reductions

Temporary road closure,

local traffic only

Traffic reduced to one lane

in each direction

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

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

Pedestrian Detours

Sign directing pedestrians Temporary detour of

pedestrian sidewalks may

be required

Brentcliffe Portal

Future Brentcliffe at Eglinton

West bound East bound

Light Rail Train in the Tunnel

Laird Station – Longitudinal Section

Bayview Station

Longitudinal Section

Mount Pleasant Station

Longitudinal Section

Crosstown Community Relations Team

40

East Community Office

660 Eglinton Avenue East

(Sunnybrook Plaza at Bayview and Eglinton, next to Home

Hardware)

E-mail: crosstown@metrolinx.com

Online: www.thecrosstown.ca

Tel: 416-482-7411