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O-Train South Extension Construction Activities

Walkley Station - Tree removal and excess clay material relocation

Date posted: September 1, 2021

As part of the Stage 2 O-Train South Extension project, work is progressing at the Walkley Station. The next phase of work requires tree and vegetation removal as well as the relocation of excess clay material within an area of the work site of the Walkley Station.

WHAT

The tree and vegetation removal and the relocation of the excess clay material from the area within the work site is required to prepare space for the next phase of work at the Walkley Station. The trees directly adjacent to the private and/or commercial properties at 1930 Bank Street (including by the Église de Dieu de la Prophétie Tabernacle de Gloire and the Versailles Academy of Makeup Arts) will NOT be removed. 25 medium to small trees will be removed within the area of the work site south of the Walkley Station. No special trees such as butternut trees are found in this area. The excess clay material will be relocated to form a berm that will be landscaped with natural growing vegetation within the area of the work site south of Walkley Station.

WHEN

Working daily from Tuesday, September 7 at 7 a.m. until Wednesday, September 8, 2021 at 6 p.m.

The hours of work will be from 7 a.m. to 6 p.m. The schedule is subject to changes.

WHY

The tree and vegetation removal as well as the excess clay material relocation are required to prepare space for the next phase of work at the Walkley Station.

WHERE

Please see the map below for the approximate location of the tree removal and excess clay relocation that is within the work site south of Walkley Station.

Map depicting tree removals at the future Stage 2 Walkley LRT Station, starting on September 7.

ANTICIPATED IMPACTS

Construction noise is not expected to exceed 85 decibels at the work site. Private and/or commercial properties adjacent to the work site of the activity will experience mild to moderate construction noise.

If you have questions about this work, please contact the City’s representative:

Michael Brossoit

Stakeholder Relations, Rail Construction Program

City of Ottawa

Email: michael.brossoit@ottawa.ca

Airport Parkway Rail-over-Road Bridge - Summer Update

July 28, 2021

As part of the Stage 2 O-Train South Extension Project, construction of the Airport Parkway Rail-over-Road Bridge continues.

What:

Construction of the Airport Parkway Rail-over-Road Bridge deck and guideway.

When:

Work will only be conducted during the day unless otherwise communicated. Bridge deck, guideway and remediation work is expected to continue until September. Work will happen from Monday to Friday each week with some additional Saturday shifts.

Why:

To ensure best use of the summer construction period and to accelerate the work where possible.

Where:

The Airport Parkway, just north of the EY Centre at the site of the Airport Parkway Rail Bridge. See the map below for more information.

A map showing the location of the work site at the Airport Parkway Rail Bridge, located on the Airport Parkway northeast of the EY Centre

Dates and Hours of Work:

Work will continue from 7am to 5pm, Monday to Friday with additional work slated to occur on Saturdays.

Anticipated Impacts:

  • Traffic, pedestrians, and cyclists will be guided through the work area and road users should watch for signage installed near the construction site.
  • Construction noise is not expected to exceed 85 decibels at the site of activity, reducing to 56 decibels at 30 meters from the site.

If you have questions about this work, please contact the City’s representative:

Michael Brossoit
Stakeholder Relations, Rail Construction Program
Email: michael.brossoit@ottawa.ca
Website: ottawa.ca/stage2

Hunt Club Rail-over-Road Bridge - Summer Update

July 6, 2021

As part of the Stage 2 O-Train South Extension Project, construction of the Hunt Club rail-over-road bridge continues. Excess water in the area has required crews to perform de-watering in order to proceed with further excavation in the centre median. As a follow-up to previous notices for work in this area, nighttime activity is scheduled to continue.

With construction taking place near residents, the following mitigation strategies are being implemented to help reduce impacts in the area:

  • All on-site equipment and vehicles will avoid reverse maneuvers, when possible, and if reversing is required, vehicles are equipped with modern, quiet reversing movement noise indicators.
  • Sound monitoring equipment has been installed in the area to monitor noise and vibrations levels for compliance with project requirements. To date, noise levels have remained far below nighttime thresholds.
  • Should noise become excessive during overnight construction, please call 3-1-1 for 24-hour reporting to the City.

What:

Overnight construction work will continue to be required for the upcoming stages of bridge construction, including: ongoing excavation in the centre median, column and pier cap construction, and the installation of precast concrete girders that will form the deck of the new bridge.

When:

Overnight construction is expected to continue until girders have been installed, which is currently expected in September.

Why:

Work is being conducted at night for the safety of workers and the travelling public and to reduce impacts on vehicular traffic, including emergency vehicles.

Where:

Hunt Club Road, between the Airport Parkway and the Transitway. See map below for more details. 

An aerial view of the work site on Hunt Club Road, located in the median of Hunt Club Road in between the Airport Parkway and the Transitway.

Dates and Hours of Work:

Overnight construction is expected to continue until early September, though this schedule is subject to change. In early July, crews will also begin working on weekends in order to accelerate the schedule. Weekend work will occur during daytime hours between 7 am and 5 pm on Saturdays and between 9 am and 5 pm on Sundays, if applicable.

Anticipated Impacts:

  • Traffic, pedestrians, and cyclists will be diverted around the construction zone and road users should watch for signage installed near the construction site.
  • Single lane access will be open in both directions during overnight work. Two lanes will be open in both directions during daytime work.
  • Although construction noise is not expected to exceed noise limits set for the project, the public will experience noise and some vibration associated with construction activity. Efforts will be made to avoid directing light toward residences.

Sign up for Updates on this Work:

  • If you have yet to do so, please sign up for the Stage 2 newsletter to receive updates about work at Hunt Club and across the alignment. Visit Ottawa.ca/Stage2Connect to join our mailing list. Updates for the Hunt Club Rail Bridge are sent to South Keys, Uplands, Airport and Leitrim Station subscribers.

If you have questions about this work, please contact the City’s representative:

Michael Brossoit
Stakeholder Relations, Rail Construction Program
City of Ottawa
michael.brossoit@ottawa.ca
Ottawa.ca/Stage2

Leitrim Bridge - Rail-over-Road Bridge Construction

Date posted: June 18, 2021

As part of the Stage 2 O-Train South Extension project, rail-over-road bridge construction is progressing and the rail bridge over Leitrim Road is ready for superstructure work.

WHAT

The superstructure work on the rail bridge over Leitrim Road, which spans the full width of the road andwill require intermittent lane closures.

WHEN

Work will take place June 21 to 25 from 9:30 am to 3 pm daily.

WHY

To allow crews to safely work on precast panels, formwork and concrete placements on the bridge which spans the length of Leitrim Road.

WHERE

Lanes on Leitrim Road will be closed intermittently; see map below for more details. Single lane access will be maintained in both directions outside of the work zone. A Traffic Control Person will manage traffic through the work zone.

Rail-over-Road Bridge Construction: Structure work at Leitrim Bridge

DATES AND HOURS OF WORK

Construction activity will occur from June 21 to 25, from 9:30 am to 3 pm daily, causing intermittent lane closures on Leitrim Road.

ANTICIPATED IMPACTS

Drivers, cyclists and pedestrians will be required to adhere to the posted signage and Traffic Control Person. Single lane access will be maintained in both directions outside of the work zone, drivers should add time to their daily commute to compensate the potential delay.

If you have questions about this work, please contact the City’s representative:

Michael Brossoit

Stakeholder Relations, Rail Construction Program

City of Ottawa

michael.brossoit@ottawa.ca

Limebank Road - Rail-over-Road Bridge Work: Lane Closures

Date posted: June 18, 2021

As part of the Stage 2 O-Train South Extension project, rail-over-road bridge construction is progressing and girder installation for the rail bridge over Limebank Road has been completed. The next stage of work is to install structural decking. A single lane closure of Limebank Road in each direction will be in place during this work to maintain uninterrupted access for traffic, pedestrians, and cyclists.

WHAT

Lane closures at Limebank Road are required to complete structural deck work.

WHEN

Work will happen between June 21 to 25 from 7am to 3pm. This schedule is subject to change.

WHY

To complete the structural deck work without major impact to the public the lanes must be closed in a staged manner to allow the ongoing movement of traffic, pedestrians and cyclists.

WHERE

On Limebank Road between Earl Armstrong Road and Rideau Road. Please see map below.

Limebank closures

DATES AND HOURS OF WORK

Work will happen between June 21 to 25 from 7 am to 3 pm. This schedule may be subject to change.

ANTICIPATED IMPACTS

  • Temporary lane closures will be required to undertake this work safely without closing the road.
  • Traffic, pedestrians and cyclists will be diverted around the construction zone and road users should watch for signage installed near the construction site.

If you have questions about this work, please contact the City’s representative:

Michael Brossoit

Stakeholder Relations, Rail Construction Program

City of Ottawa

michael.brossoit@ottawa.ca

Ellwood Diamond - Impacts from Bridge Demolition

Last updated May 20, 2021

As part of the Stage 2 O-Train South Extension project, work is progressing on the Ellwood Diamond rail bridge, which will allow VIA Rail trains to pass below the Trillium Line. Traffic impacts are expected during the work.

WHAT

The rail bridge over the southeast Transitway is being dismantled and demolished to make way for a new rail bridge which will allow VIA Rail trains to pass below the Trillium Line safely and efficiently.

WHEN

Work is planned from May 31 to June 25; for more details, please check the maps and schedule provided below. This schedule is subject to change.

WHY

To allow work to progress on construction of the new Ellwood Diamond rail bridge, the demolition of the existing bridge must be completed.

WHERE

Please see the maps below.
Date and Time Location Acitivty Impact
May 31st to June 11th, 09:30-15:00 Refer to map 1 Bridge dismantling Intermittent lane closures
June 11th 10pm to June 14th 5am Refer to map 2 Bridge demolition Full southeast Transitway closure
June 14th to June 25th, 09:30-15:00 Refer to map 1 Bridge dismantling Intermittent lane closures

A map showing the location of the bridge work at the Ellwood Diamond, South of Heron and East of the Airport Parkway
Southeast Transitway, South of Heron Road and East of the Airport Parkway

Map 1: Transitway, south of Heron Road, east of the Airport Parkway

A map of the southeast Transitway closure between Billings Bridge and Walkley

Map 2: location of southeast Transitway closure between Billings Bridge and Walkley

DATES AND HOURS OF WORK

Work is planned from May 31 to June 25 from 9:30am to 3pm. The southeast Transitway will be closed between Billing Bridge Station and Walkley Road from June 11 at 10pm to June 14 at 5am (inclusive). This schedule is subject to change.

ANTICIPATED IMPACTS

  • Crews will be dismantling the existing rail bridge in stages. Single lane closures in each direction will be used to allow OC Transpo buses to travel through the work zone, as per map No. 1.
  • A full closure of the southeast Transitway will be in place to allow crews to remove the girders and large overhead bridge components, as per map number 2.
  • The expected noise impacts are minimal, as the nearest residences are approximately 200 m away from the site and on the other side of a treed ravine.

If you have questions about this work, please contact the City’s representative:

Michael Brossoit
Stakeholder Relations, Rail Construction Program
City of Ottawa
Email: michael.brossoit@ottawa.ca
Website: ottawa.ca/stage2

Earl Armstrong Road - Notice of Lane Closures for Surveying

Last updated May 21, 2021

As part of the Stage 2 O-Train South Extension project, construction of the rail infrastructure for Limebank Station is progressing.

WHAT

Crews will need to survey the existing roadway to proceed with the construction of Limebank Station and the Limebank rail over road bridge.

WHEN

Work will take place on Tuesday May 26, from 9:30 am to 3:00 pm. This schedule may be subject to change.

WHY

Survey work must be completed to proceed with construction of rail infrastructure.

WHERE

Earl Armstrong road will be closed intermittently in stages. See map below for more details. Traffic will be maintained in both directions through the work zone. Bike lanes will remain open.

a map showing the location of intermittent lane closures on Earl Armstrong Road between Canyon Walk Drive and Limebank Road

DATES AND HOURS OF WORK

Construction activity will occur on Tuesday May 26, from 9:30 am to 3:00 pm. This schedule may be subject to change.

ANTICIPATED IMPACTS

Drivers, cyclists and pedestrians will be required to adhere to the posted signage. Traffic will be maintained in both directions through the work zone.

If you have questions about this work, please contact the City’s representative:

Michael Brossoit
Stakeholder Relations, Rail Construction Program
City of Ottawa
Email: michael.brossoit@ottawa.ca
Website: ottawa.ca/stage2

Rock Excavation Frequently Asked Questions: Trillium Line South Extension, Gladstone Ave. – Beech St.

Q. Why does rock excavation need to take place to proceed with the Trillium Line South Extension?

Rock excavation has been required in three main locations along the existing Trillium Line. The first location is north of Gladstone Avenue and this was needed to allow for construction of the new station. The second area is beside the existing Carling station and this was to lengthen the existing platform to accommodate the longer trains. The final and longest stretch will take place in the trench from the south side of Gladstone Avenue to Beech Street. This work is required so that the guideway can be widened to allow for the installation of a second track.

Q. Why do you need to excavate, why can’t rock blasting be used?

Although explosives were originally expected to be used for the purpose of rock removal in the area between Gladstone Ave. and Beech St., there are certain restrictions in place surrounding the use of explosives in proximity to the new 417 overpass. Therefore, an alternative means was required in this area to remove the rock. The method to be used is referred to as hoe ramming.The contractor will first drill multiple holes into the rock wall which will render it easier to break. Using a hoe ram, the contractor then breaks up the rock and will carry it away by truck.

Q. What is a hoe ram, how does it work?

A hoe ram is a piece of heavy equipment used for rock excavation. It consists of an excavator fitted with a jack hammer at the end of its boom, in the place of a bucket.

Q. How long will this construction go on?

Given the distance that requires excavating, the contractor has predicted that once excavation begins in December, it will go on for a period of up to 3 to 4 months.

Q. Is there anything being done to reduce construction noise and disturbances in the area?

The City has requested that this work only be carried out during weekday daytime hours (Monday to Friday from 7 am – 5 pm). In addition, the City and it’s the Contractor are investigating the use of noise dampening panels to help reduce noise impacts to nearby residences.

Q. How do you know what a safe level of vibration is near homes?

TNEXT will be following a strict set of specifications outlined in the Trillium Line Extension Project Agreement. Contained within are Environment Obligations specific to noise and vibration that specify maximum noise and vibration thresholds. These regulations dictate the acceptable limits on vibrations in order to protect the nearby structures. Using a monitoring station installed near the work zone, the engineering firm DST Consulting Engineers receives and monitors data in real time to ensure levels remain compliant. If they record any exceedances, they notify the contractor.

Q. Will the construction vibration damage my foundation?

The foundation is the strongest part of a house. No matter what your foundation is made of, vibration regulations and standards are designed to protect the weakest parts of the house, such as the plaster and drywall. Ground vibrations strong enough to crack foundations consisting of concrete and masonry would have to greatly exceed the vibration limits set by typical regulations.

Q. What if I find damage, who do I speak to?

Although all measures are taken to prevent damage to neighbouring properties, you may be put in contact with the engineering firm if you have any additional questions or concerns. To do so, please contact the City’s representative:

Michael Brossoit
Stakeholder Relations, Rail Construction Program 
City of Ottawa
Email: michael.brossoit@ottawa.ca
Website: ottawa.ca/stage2

Stage 2 Trillium Line Gladstone MUP Detour & Access Roads Construction

As part of the Stage 2 O-Train Trillium Line South Extension, a section of the Trillium Pathway on the north side of Gladstone Avenue will be closed and replaced with a temporary multi-use pathway (MUP) that will detour pedestrians and cyclists around construction activity.

WHAT: A section of the Trillium Pathway will close and will be replaced by a paved, temporary MUP.

WHEN: Wednesday, May 20, 2020 until the end of the construction period.

WHY: Construction of the new Gladstone station is ready to commence. To provide crews the necessary space for construction activity while ensuring that cyclists and pedestrians maintain access to the pathway system, a temporary MUP has been created that will safely detour around the construction zone.

WHERE: Please see the image below.

This image is a respresentation of the mutli-use pathway detour at Gladstone
Gladstone Multi-use Pathway Detour

DATES AND HOURS OF WORK
Construction activity is primarily scheduled to occur during typical daytime construction hours between 7 am and 10 pm Monday through Friday. Intermittent night work may be required at times and will be communicated in advance through the project website at ottawa.ca/stage2 or by e-newsletter.

ANTICIPATED IMPACTS
Vehicles accessing the construction site from Gladstone Avenue will use a temporary access road that intersects with the temporary MUP. Flaggers will be positioned at this location to help manage construction vehicle access and egress and ensure the safety of cyclists and pedestrians.Pedestrians and cyclists will be required to adhere to detour signage and use the temporary MUP to detour around construction activity.The temporary MUP will be paved with painted lines and will be lit to the same levels as the Trillium Pathway.

If you have questions about this work, please contact the City’s representative:

Michael Brossoit
Stakeholder Relations, Rail Construction Program
City of Ottawa
Email: michael.brossoit@ottawa.ca
Website: ottawa.ca/stage2

Stage 2 Trillium Line Rock Excavation Frequently Asked Questions (FAQ)

Q. Why does rock excavation need to take place to proceed with the Trillium Line South Extension?
Rock excavation needs to take place in three main locations along the existing Trillium Line. The first location is north of Gladstone Avenue and this is needed to allow construction of the new station. The second area will occur beside the existing Carling station and this is needed in order to lengthen the existing platform to accommodate the longer trains. The final and longest stretch will take place in the trench from the south side of Gladstone Avenue to Beech Street. This work is required so that the guideway can be widened to allow for the installation of a second track.

Q. Why do you need to “blast”, why can’t the rock be dug out?
The use of highly regulated and controlled explosives and detonating accessories allows the rock to be excavated efficiently. While rock blasting creates intermittent disruption (noise and vibration), it is considered much less impactful to area residents than the other available method, called hoe ramming, which involves using large equipment to chip out rock and creates loud noise, vibration and dust and is quite disruptive. The overall excavating operation period is greatly reduced through the use of controlled blasting.

Q. What experience does the blasting company have?
TransitNEXT, the City of Ottawa’s contractor, has retained M-Roc Ltd, an Ottawa-based precision blasting contractor that has been the primary blasting contractor in downtown Ottawa for over 20 years. Projects they have worked on includes blasting at Parliament Hill, the World Exchange Plaza, the Museum of Civilization (beside heritage structures) and for condominium underground parking garages in downtown Ottawa.

Q. What qualifications must a rock blaster have?
Blasting is a highly specialized occupation that requires training and knowledge of the storage, transportation and field application of explosives and detonation accessories. Blasters are certified and work under the supervision of a Professional Engineer. Blasting is regulated by the provincial government.

Q. I live very close to the blasting site. I am very concerned about potential damage to my property because I am so close to the blasting.
Explosives are commonly used in very close proximity to man-made structures. For example, controlled blasting is done to create swimming pools next to existing homes, utilities are installed beside roads and buildings, and foundations are built in developed areas.It is the level/frequency of vibration that causes damage to structures, not the distance from the building/structure. Regulations have been adopted to ensure that vibration levels are lowered the closer the blast is to the existing structures.

Q. How do you know what a safe level of vibration is near homes?
M-Roc Ltd. will be following a strict set of specifications outlined in both the Trillium Line Extension Project Agreement and the City of Ottawa’s Special Provision F-1201. The vibration limit criteria in the City’s Special Provision is based on data from the U.S. Department of Mines, which has performed thousands of research studies on blasting near structures. These regulations dictate the acceptable limits on vibrations in order to protect the nearby structures.All blasts are designed to meet regulatory limits and are monitored by an independent monitoring company to ensure compliance with these limits.

Q. How will you know if the vibration level is safe during blasting?
Blasting seismographs will be placed near properties close to blasting. These seismographs measure and record the ground and airwaves from each blast. This information is used to verify that the ground and air vibrations are within the standards set to protect local structures. This data is reviewed with each blast and is independently recorded to demonstrate compliance. Should readings approach the set limits, blasting activities are put on hold until the vibration levels can be better controlled.

Q. Where will seismographs be placed?
Seismographs are strategically placed by Explotech Consulting Engineers who select the most optimum location to record vibrations. It will not be necessary for a seismograph to be placed at each property. One seismograph will monitor and record vibration levels in the neighbouring buildings as well as the building that it is near.

Q. Can the data on a seismograph be altered?
No. Blasting seismograph data is stored digitally and coded internally to prevent tampering.

Q. Why don’t you monitor the vibrations inside my house?
Research has shown that the most consistent way to measure ground waves is to attach the seismograph to the ground outside the property. The measured vibration level can then be compared with vibration regulations.

Q. Will the blasting vibration damage my foundation?
The foundation is the strongest part of a house. No matter what your foundation is made of, vibration regulations and standards are designed to protect the weakest parts of the house, such as the plaster and drywall. Ground vibrations strong enough to crack foundations consisting of concrete and masonry would have to greatly exceed the vibration limits set by typical regulations.

Q. Is there a greater risk of damage with repeated blasts near my property?
The United States Bureau of Mines has studied the repeated effect of vibration on structures. This study included continuous, daily blasting for 28 years. The goal was to investigate the cumulative effects of blasting on a building. They concluded that, as long as the vibration levels were below regulated limits, cumulative or repeated effects were not seen.

Q. Is there any danger from flying debris created from a blast?
Layers of heavy blasting mats are used with every blast to prevent flying debris. Each blast is actually made up of a series of small blasts that are sequenced to reduce the risk of any flying rock and keep vibration levels to a minimum.

Q. What will I hear and feel during blasting?
A series of air whistles will be sounded before and after a blast:• 5 short whistles will sound 1 minute before a blast• 3 short whistles will sound immediately prior to a blast• 1 long whistle will signal the all-clear after a blastPeople (and animals) are very perceptive to a small amount of ground motion.However, without scientific instruments, people cannot accurately put a value on the amount of motion that is created. Homes take quite a lot of vibration on a daily basis. Door slamming, thunderstorm activity and wind all produce vibrations that we feel and take for granted since these are everyday events. The level of vibration from controlled blasting will be similar to these types of events.

Q. Will some of the blasts feel stronger than others?
The position and orientation of a blast at a construction site may cause the perception that one blast is stronger than another. Your location (outside, inside, upper, or lower floor of your house) will also change your perception. Human perception is not a good measure of blast effect, which is why seismographs are used to scientifically measure vibration.

Q. How long after blasting can my house be affected?
Vibration energy is not stored in the house and has no potential to be cumulative. Each blast affects your home as a single event and rarely lasts for more than a few seconds. As ground and airwaves pass, the house will vibrate. When the ground and airwaves end, the vibration will end.

Q. How will you know if my house has been affected?
Prior to blasting, pre-construction surveys are offered to nearby property owners to document the existing condition of the building and identify any sensitive structures or building components. Notifications are being delivered to homes within the impact zone and these exterior surveys are currently being completed in stages by DST Consulting Engineers. If you have not yet had a survey done but you would like to schedule an appointment, please contact the project coordinator at 613-858-2287 or via email at telasmar@dstgroup.com.In addition to pre-condition surveys, seismograph data before and after each blast helps ensure that vibration levels are within set limits to prohibit damage to nearby structures.

Q. Is there anything I should do to prepare for blasting?
You may wish to check picture frames and wall-hangings to ensure they are secure, as it will be difficult to make a claim for such damages.

Q. What if I find damage, who do I speak to?
Although all measures are taken to prevent damage to neighbouring properties, you may contact the vibration monitoring company or the blasting company if you wish to file a damage complaint. A successful claim is not common as long as vibration readings are within allowable vibration limits.

If you have any additional questions or concerns, please contact the City’s representative:
Michael Brossoit
Stakeholder Relations, Rail Construction Program
City of Ottawa
Email: michael.brossoit@ottawa.ca | Website: ottawa.ca/stage2