Trail Connections Meeting Presentation - June 24 & 25
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Seymour River Canyon Trail Connections
Transcript of Trail Connections Meeting Presentation - June 24 & 25
Seymour River Canyon Trail Connections
Seymour River Rockslide ‐ Location
Rockslide
Seymour Capilano Filtration Plant
Aerial view of LSCR
Seymour‐Capilano Filtration Plant
Former Twin Bridge location
Lower Seymour Conservation Reserve (LSCR)
TrailsRockslide
Hyannis Point
Dec. 7, 2014
Aerial view of slide siteWest at top
View of slide looking upriver
Seymour River Rockslide
Emergency Response ‐ Incident Command
• Emergency services on site• Ongoing monitoring of river and slide• Assessments• Closed unsafe trail sections• Removed Twin Bridge (immediate railing removal)• Provided information to public
Emergency Response: Trail Closures
Fisherman’s Trail closed
Bottle Top Trail closed
Twin Bridge removed
Former Twin Bridge
Rockslide
Closed sections
Emergency Response: Trail Closures cont.
Flooding on Fisherman’s Trail
Posted advisory signage
Emergency Response: Twin Bridge Removal
Pre‐rockslide
Submerged bridge anchor after removal
Emergency Response: Twin Bridge Removal
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Post‐rockslide: Dec 10, 2014
S
Post‐rockslide: looking up river
Permanent Changes
Flooding after significant rainfall
Rockslide
Former Twin Bridge location
River Dynamics
Pre‐rockslide Water Levels (2013)
Former Twin Bridge Elevation
Heavy Rain Events
Post‐rockslide Water Levels (2015)
Assessments
1) Twin Bridge removal‐ All‐Span Engineering and Construction Ltd.‐ Associated Engineering
2) Geotechnical assessment of slide site ‐ BGC Engineering Inc.
3) Hydrology of the Seymour River and change in channel structure‐ Northwest Hydraulic Consultants
4) Slope stability of flooded area ‐ Cordilleran Geoscience
5) Tree mortality in flooded area‐ Diamond Head Consulting
Assessments: Geotechnical analysis of slide site BGC Engineering Inc.
Assessments: Hydrology of the Seymour RiverNorthwest Hydraulic Consultants
Assessments: Tree Mortality and Slope StabilityDiamond Head Consulting and Cordilleran Geoscience
Flooded forest floor
Public Safety
PICTURE OFF NEW SAAFETY SIGN
Public Safety
• Patrolling and creating awareness for public about hazards
• Decommissioning unauthorized trails that lead down to the river
• Continuing geological monitoring of rockslide site
• Monitoring tree mortality in flooded area
• Gathering data on fluctuating river levels
Future Options & Opportunities
Future Opportunities: Investigations Spur 4 Bridge
RockslideFormer Twin Bridge location
Baden‐Powell Bridge
Suicide Branch
Bottle Top
Canyon Creek Bridge (north of Riverside
Dr.)
Future Opportunities: A New Pedestrian Bridge
Rockslide
Former Twin Bridge location
Example of pedestrian bridge structure
Riverside Drive: Access to Water Infrastructure
Seymour Water Main
Riverside Dr.
Canyon Creek Bridge
Future Opportunities: Canyon Creek Bridge
Canyon Creek pedestrian bridge at Riverside Drive
Planned & Proposed Trail Improvements
Trail Improvements: New Trail Connections
Rockslide
Former Twin Bridge location
Baden‐Powell Trail
New Richard Juryn – Twin Bridges trail connector
New Fisherman’s Trail
Trail Improvements: Baden‐Powell Trail
Baden‐Powell Bridge
Next Steps & Staying Informed
Timeline for Construction & Community Relations
Timeframe Summer‐Fall 2015
Fall 2015 2015 2016 2017‐2018
Activity Construction:
Baden‐Powell Trail upgrades
Construction:
Powerline to Twin Bridge trail connection
Conceptual Design:
Pedestrian crossing and Canyon Creek Bridge
DetailedDesign:
Pedestrian crossing and Canyon Creek Bridge
Proposed Construction:
Pedestrian crossing and Canyon Creek Bridge
Outreach Email, web and signage updates
Email, web, Twitter and signage updates
Email, web, twitter and signage updates
Email, web, twitter and signage updates
Email, web, Twitter, signage & hand‐deliveredcommunication updates
Metro Vancouver is committed to keeping you informed
How to Stay Informed
• Website: www.MetroVancouver.org/TrailConnections
• Twitter: @MetroVancouver
• Your Community Liaison Officer, Steve Billington
Next Steps
• Metro Vancouver is gathering input at this stage of this review process
• A summary of the input provided will be distributed via email in July 2015
• Metro Vancouver staff will continue to provide updates during this process
