Details of Anti-Noise Walls City of Montreal New Champlain Bridge Corridor Project June 15, 2016

1. › Details of Anti-Noise Walls
› City of Montreal
New Champlain Bridge Corridor Project
June 15, 2016

2. New Champlain Bridge Corridor Project
Presentation Outline
1. Noise study
2. Visual and urban integration of the
anti-noise walls
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3. New Champlain Bridge Corridor Project
Verdun
L’Île-des-Soeurs
Sud-Ouest
Impact study criteria for selecting sensitive areas:
- Residential and institutional areas
- Areas located in a 300-metre radius of expressways and on-ramps
Areas under Review
Base map: Utilisation du sol 2014, Communauté métropolitaine de Montréal
Agglomération de Montréal feuillet 66-08-US 2014
Areas under Review
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4. New Champlain Bridge Corridor Project
Noise Criteria
Definition of ambient noise
• Audible noise recorded prior to the project
• Measured over a 24-hour span (Leq 24 h)
• Used to establish the project's noise criteria
Noise criteria for the project
The average sound level over 24 h (Leq 24 h) generated by expressways
and on-ramps must not exceed:
• 55 dBA if the initial ambient noise was below 55 dBA
• An increase of 1 dBA if the initial ambient noise was between 55 and
59 dBA
• 60 dBA if the initial ambient noise was greater than or equal to
60 dBA
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5. New Champlain Bridge Corridor Project
Noise Criteria
Project noise
• Noise modelled for 24-hour periods (Leq 24 h)
• Based on the following key data:
 Average daily traffic in summer in 2050
 Design of expressways and their on-ramps
 Type of asphalt
 Speed
 Topography
Mitigation measures
• Must mitigate noise from expressways and on-ramps in 2050 for
compliance with noise criteria
• The goal is not to mitigate the noise from other sources (trains,
factories, provincial and municipal roads, etc.)
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6. New Champlain Bridge Corridor Project
Initial Ambient Noise (May 2015)
LaSalle/Wellington Area
M1
M2
M3
Railways
LaSalle
Sensitive area
- Residential
- Institutional
- Public park
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7. New Champlain Bridge Corridor Project
Initial Ambient Noise (May 2015)
L’Île-des-Soeurs Area
I1
I2
I3
Sensitive area
- Residential
- Institutional
- Public park
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8. New Champlain Bridge Corridor Project
1. (T): noise transmitted through the wall (negligible)
2. (D): noise diffracted on the edges of the wall
3. (A) and (R): noise absorbed and reflected by the wall
Source:Citéacoustique,UniversitéduMaine,France
How an Anti-Noise Wall Works
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9. New Champlain Bridge Corridor Project
Assessment of Project Noise in 2050 ---
without Anti-Noise Walls
M1
M2
M3
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10. New Champlain Bridge Corridor Project
Assessment of Project Noise in 2050 ---
with Anti-Noise Walls
Concrete barrier
Anti-noise wall
M1
M2
M3
LaSalle
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11. New Champlain Bridge Corridor Project
Assessment of Project Noise
in 2050 --- without Anti-Noise Walls
I1
I2
I3
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12. New Champlain Bridge Corridor Project
Assessment of Project Noise
in 2050 --- with Anti-Noise Walls
I1
I2
I3
Anti-noise wall
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13. New Champlain Bridge Corridor Project
Visual and Urban Integration

14. New Champlain Bridge Corridor Project
New Champlain Bridge Corridor Project:
Entrance Integrated into its Environment
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15. New Champlain Bridge Corridor Project
Corridor Artwork Elements Inspired by
the Main Bridge
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16. New Champlain Bridge Corridor Project
Architectural Elements of the Anti-Noise
Walls
TYPE A OPAQUE TYPE C
TRANSPARENT
Highway side Residential side
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17. New Champlain Bridge Corridor Project
Rushbrooke
Gibbons
Wellington
De la Poudrière
Butler
Location and Height of Anti-Noise Wall
De la Poudrière and May Street Area
Railway
Type A opaque wall made of panels 500 mm
high
Barrier H: 1.14 m
Standard height in relation to the inside of the
runway
Vertical scale 1x1
Runway
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Jacques-Lauzon

18. New Champlain Bridge Corridor Project
Details of the Visual Integration
TYPE A
May Street
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19. New Champlain Bridge Corridor Project
Detailed Elevations of the Anti-Noise
Walls
1 2
2 3
2 3
1 2
LaSalle
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20. New Champlain Bridge Corridor Project
Detailed Elevations of the Anti-Noise
Walls
2 3
2 3
1 2
1 2
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LaSalle

21. New Champlain Bridge Corridor Project
Detailed Elevations of the Anti-Noise
Walls
4 5
3 4
3 4
4 5
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22. New Champlain Bridge Corridor Project
Detailed Elevations of the Anti-Noise
Walls
3 4
3 4
4 5
4 5
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23. New Champlain Bridge Corridor Project
Detailed Elevations of the Anti-Noise
Walls
5 6
5 6
Wellington
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24. New Champlain Bridge Corridor Project
Detailed Elevations of the Anti-Noise
Walls
5 6
5 6
Wellington
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25. New Champlain Bridge Corridor Project
Site Integration of the Anti-Noise Wall
Gibbons Street Area
Section A before and after
A B C
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26. New Champlain Bridge Corridor Project
Site Integration of the Anti-Noise Wall
De la Poudrière Area
Section B before and after
A B C
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27. New Champlain Bridge Corridor Project
Site Integration of the Anti-Noise Wall of
May Street Area
Section C before and after
A B C
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28. New Champlain Bridge Corridor Project
Elevation of the Anti-Noise Wall
L’Île-des-Soeurs Area
Type C barrier and
transparent wall
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29. Thank You