Technical Presentation to City of Victoria Council June 14, 2010 With: Stafford Bandlow | Jonathan Yardley Architects | Wilkinson Eyre Architects | H.W. Lochner| Advicas Quantity Surveyors| Sharp and Diamond | CN Ryzuk & Associates
Presentation Outline • Project Requirements – Project Objectives – Seismic Considerations – Rail Considerations – Lane Considerations • Replacement Option • Rehabilitation Option • Technical Questions • Costs • Economic Impact • Summary 6/13/2010 2
Project Objectives – 1 • Replace or rehabilitate the JSB to provide for safe and long-lasting infrastructure and as a traffic calmed corridor • Provide 2-lanes outbound and 1-lane inbound • Provide on-street bike lanes • Provide pedestrian walkway (south side) • Provide multi-use path (north side) • Provide dedicated rail crossing • Improve navigation channel to be in accordance with current standards 6/13/2010 3
Project Objectives – 2 • Provide improved cycling/pedestrian/vehicular access at bridge heads to minimize conflict & improve safety • Integration with existing and proposed pathways • Seismic performance to M8.5 earthquake • 100 year service life • Maintain traffic flow during construction (vehicles, marine, pedestrians, bikes) • Meet historic guideline requirements including “ Standards and Guidelines for the Conservation of Historic Places in Canada” and “City of Victoria Old Town Guidelines”. 6/13/2010 4
Seismic Considerations • 35% probability of major quake (M7.0 to M7.9) in next 50 years • Recent earthquake in Washington (2001) was M6.8 • Existing Johnson Street Bridge will collapse in less than M6.5 earthquake (2009 Condition Assessment) • Point Ellice Bridge upgraded in 2001 to not collapse in a M6.5 earthquake but repairs would be needed. No Emergency Access after M6.5. • Required seismic performance driven by life safety, disaster response, protection of investment, post- disaster economic recovery. 6/13/2010 5
Seismic Considerations* Seismic Design After M6.5 After M8.5 Category Earthquake Earthquake Lifeline No damage No collapse Repair needed Other No collapse Replacement needed Repair needed * Earthquake magnitudes (M) have been referenced rather than design seismic events to provide a point of reference for non-technical audience 6/13/2010 6
Seismic Considerations • Recommendation: Replacement bridge be designed for M8.5 earthquake • Recommendation: Rehabilitated bridge be designed for M8.5 earthquake Note: Potential for loss of major investment if seismic performance is reduced below M8.5. 6/13/2010 7
Railway Considerations • Base options for replacement & rehabilitation include railway bridge with station on downtown side • Significant savings realized in all options if railway terminated in Victoria West • Existing rail bridge could be converted to multi-use trail with rehabilitation option • Replacement bridge could be narrowed • Corridor for potential future commuter rail should be preserved 6/13/2010 8
Roadway Bridge - Lane Considerations • Base options for replacement & rehabilitation include 2 westbound and 1 eastbound lanes of traffic • Trip growth of at least 40% expected by 2026 per Regional Growth Strategy & Travel Choices • Elimination of 1 westbound lane results in LOS F with queuing/congestion past Government Street and past Yates Street • Emergency responders are concerned that lane reductions and more congestion will increase response times. 6/13/2010 9
Replacement Option 6/13/2010 10
Replacement Option - Scope Establish trail head for Improved navigation Galloping Goose / Trans channel in accordance with Canada Trail current regulations multi-use trail with Main bridge with 3 lanes, on Elimination of “S” curve and connection to street bike lanes, rail. install traffic signal Galloping Designed as a traffic calmed Goose/ENR Trail corridor. Improved downtown approaches including Integration with Harbour sidewalks along west of Pathway Wharf St. Pedestrian Sidewalk with connections to adjacent pathways Consolidated green space New Railway Station 6/13/2010 11
Replacement Option - Scope Multi-Use Sidewalk Road/Train/On-Street Bike Deck Trail 5.0 m 3 -3.0 m 1.8 m 1.8 m 2.5 m 5.0 m 6/13/2010 12
Replacement Option - Scope 6/13/2010 13
Replacement Option - Scope 6/13/2010 14
Replacement Option - Scope • New bridge to north of existing • “S” curve removed with new signal added at Harbour and Esquimalt • 30 km/h retained and landscaping added to provide traffic calming • Vehicle traffic flow maintained during construction (no closures) • 2-lanes outbound; 1-lane inbound • On-street bike lanes • Pedestrian walkway (south side) • Multi-use pathway (north side) 6/13/2010 15
Replacement Option - Scope • Dedicated rail crossing • Integration with existing pathways on east and west • Upgraded navigation channel • No collapse after M 8.5 earthquake • 100 year design life • Meets historic / aesthetic guidelines 6/13/2010 16
Replacement Option – Schedule* Year Activity 2011 Complete design & tender 2012 Remove rail bridge & procure/fabricate long lead time components; foundations 2013 Continue construction 2014 Complete construction & open new bridge 2015 Remove old roadway bridge * Based on conventional delivery (Design-Bid-Build) 6/13/2010 17
Replacement Option – Staging 2011/2012 Early 2015 2013/2014 Under Construction 6/13/2010 18
Rehabilitation Option 6/13/2010 19
Rehabilitation Option - Scope Navigation channel width is Establish trail head for limited by existing bridges Galloping Goose / Trans Canada Trail New multi-use trail bridge with Rehabilitated railway bridge connection to Green space remains “Land- Galloping Locked” (similar on east) Goose/ENR Trail Existing railway station Existing downtown Rehabilitated existing road approach roads with No dedicated on-street bike bridge with improved deck improved sidewalk along lanes for bikes; new sidewalk Wharf Street decking Existing “S” curve 6/13/2010 20
Rehabilitation Option - Scope Multi-Use Sidewalk Trail Rail Deck 2.5m Road Deck, Bridge 5 m 3-3 m lanes 5 m 6/13/2010 21
Rehabilitation Option - Scope 6/13/2010 22
Rehabilitation Option - Scope 6/13/2010 23
Rehabilitation Option – Scope • New 5 m wide multi-use trail bridge to the north • Replace all electrical/mechanical systems • Upgrade road and railway bridges to withstand M8.5 earthquake • Repair corrosion and repaint for road and railway bridges • New non-skid riding surface on road bridge for on-street bikes • Existing pedestrian walkway on south side of road bridge improved with new non-slip deck 6/13/2010 24
Rehabilitation Option - Scope 6/13/2010 25
Rehabilitation Option – Future Maintenance Repair* Frequency Starting ** Paint touch-up and steel repairs 5 years 2020 Repaint and steel repairs 15 15 years 2030 years Approach span concrete deck Once 2035 replacement * Full closures of several month durations are anticipated for future rehabilitation works ** Assuming completion of construction in 2015 6/13/2010 26
Future Maintenance – Both Options Repair Frequency of Repairs (years) Rehabilitation Replacement Existing New Multi-Use Bridges Trail Bridge Annual Maintenance annually annually annually Engineering Inspections bi-annual bi-annual bi-annual Paint Touch-Up 10 5 10 Repairs to wearing surface 5 5 --- Electrical Mechanical Repairs once once once Repaint 20 15 20 Approach Span deck replacement --- once --- Repave 15 15 --- 6/13/2010 27
Rehabilitation Option – Schedule* Year Activity 2011 Complete design & tender 2012 Procurement/fabrication of long lead time components, site preparation, foundations 2013 Construct new multi-use trail bridge and continue with upgrade to existing bridge foundations 2014 Rehabilitate railway bridge 2015 Rehabilitate road bridge Early 2016 Open * Based on conventional delivery (Design-Bid-Build) 6/13/2010 28
Rehabilitation Option – Staging 2015 2011/2012 2013 Early 2016 2014 Under Construction Detour 6/13/2010 29
Rehabilitation Option – Construction Impacts • Traffic limited to 2-lanes for 1 year with Multi- Use Trail Bridge available for detour.* • Transit, commercial vehicles, trucks, pedestrian & bike access reduced during construction * Note: 12 month full closure if Multi-Use Trail Bridge is not available for detour. 6/13/2010 30
Technical Questions 6/13/2010 31
Replacement Option ($ millions) Cost Item 2008 Estimate Class “C” Difference Estimate Construction Items* Mobilization, site preparation, traffic 1 3 +2 management 3 3 0 Demolition of existing bridges 44 48 +4 New bridge Civil works (includes Telus duct, 5 6 +1 contaminated soil) Subtotal Construction 53 60 +7 Contingency (15%) 4 9 +5 Engineering 6 8 +2 Property 0 1 +1 Escalation, Financing, taxes 0 11 +11 Total Estimated Cost 63 89 +26 * General conditions provided in detailed estimate distributed to other construction items to reflect bid numbers 6/13/2010 32
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