Technical Briefing: Fixed price contract award for construction of - - PowerPoint PPT Presentation

Technical Briefing:

Fixed price contract award for construction of new Johnson Street Bridge

Project Overview

Project Overview

• Bridge is corridor to Region’s central business,

entertainment, and tourism districts

• Connects growing neighbourhood of Vic West and

Esquimalt, View Royal, Saanich, Colwood, and Langford

• 30,000 crossings per day
• 4,000 pedestrians and 3,000 cyclists

Project Overview

• New bridge will be built to a lifeline seismic standard

to withstand 8.5 M earthquake

• Widened marine navigation channel to 41m to meet

modern standards

• Project protects rail corridor, enhances safety and

improves viewscapes

• New bridge respects history of existing bridge and

Old Town guidelines

Project Overview

• Minimal traffic impacts as existing bridge remains
• pen during construction
• Open connection during years of construction

supports the economic vitality of Region’s downtown

• Transit route across bridge is one of top 5 routes in

Capital Region

• Improves active transportation with dedicated bike

lanes, pedestrian walkway and multi‐use path

Project Overview

• Project estimated to generate 900 short‐term jobs
• New opportunities for local businesses, industry and

contractors

• Urban Development Institute estimates construction to

generate half billion $ in economic development

• Large infrastructure projects are catalyst for

revitalization

Features of New Bridge

Construction of new Johnson Street Bridge

Fixed Price Contract Award

• Following competitive process with 3 world class

construction companies, City awarded fixed price contract to PCL Constructors Westcoast Inc.

• Fixed price award is $63,235,000
• Contract is within approved budget
• PCL is largest contracting organization in Canada,

and 6th largest in US. PCL has built large scale bridges across North America.

Contract Scope

• Fixed price contract to PCL to construct new bridge to

meets requirements of Project Charter and Project Definition Report and includes six design optimizations approved by City.

• Is consistent with plans on file during referendum
• Contract incl: roadway, landscaping, paths, trails,

decommissioning of old bridge and new lifting bridge

• In addition to bridge project, PCL will build retaining

wall as lease improvement to adjacent City property on Harbour Road

Through collaborative process, proponents identified

• pportunities to optimize design for further benefit to

the City, e.g.: reduce capital costs, reduce maintenance costs, expedite timeline, reduce environmental impacts, manage project risks etc. Optimizations are consistent with the objectives of the Project Charter.

Engineering Optimizations

• 1. Bascule Pier – reduction in size
• 2. Hydraulic mechanical system
• 3. Rest Pier – simplified geometry
• 4. Simplified truss sections
• 5. Concrete approach spans rather than steel
• 6. Concrete Multi‐use Trail Overpass rather than steel

Engineering Optimizations

Engineering Optimizations

#4 Simplified Truss Sections #1 Bascule Pier Size Reduction, #2 Hydraulic Mechanical System #3 Rest Pier – Simplified Geometry #5 Concrete Approach #5 Concrete Approach

Indicative Design Optimized Design

Bascule Pier – Reduced Size

• Eliminates need for cofferdam
• No excavation of harbour bed required
• Reduces environmental disturbance/footprint
• Accelerates construction schedule
• Reduces formwork and concrete quantity and cost
• Construction is independent of tidal fluctuations

and impacts of weather on water based construction

Bascule Pier – Reduced Size

Mechanical System ‐ Hydraulic

Indicative Design Optimized Design

• Hydraulic system
• Increases redundancy in brakes and motors
• Ease of service by heavy machinery and hydraulic

motor mechanics

• Roller system reduces point loading on truss wheel
• Allows for a balanced structure
• Relocation of drive machinery allows for resize of

bascule pier

• Readily available “off the shelf” equipment

Mechanical System ‐ Hydraulic

Indicative Design Optimized Design

Rest Pier – Simplified Geometry

• Eliminates need for cofferdam
• No excavation of harbour bed required
• Reduces environmental disturbance/footprint
• Accelerates construction schedule
• Reduces formwork and concrete quantity and cost
• Construction is independent of tidal fluctuations

and impacts of weather on water based construction

Rest Pier – Simplified Geometry

Indicative Design Optimized Design

Simplified Truss Chords

• Reduces fabrication costs
• 35% to 40% less welding
• Less steel members to handle
• Reduced geometric control required
• Simplifies product quality management
• Makes fabrication schedule easier to manage

Simplified Truss Chords

Concrete Approach Spans

Indicative Design Optimized Design

• Lower future maintenance costs
• Reduced construction cost
• Limited on‐site concrete/formwork
• BC supply
• Schedule reduction

Concrete Approach Spans

Concrete Multi‐Use Overpass

Optimized Design Indicative Design

• Lower future maintenance costs
• Reduced construction cost
• Limited on‐site concrete/formwork
• BC supply
• Schedule reduction

Concrete Multi‐Use Overpass

Fixed Walkway through the “Wheel”

• Additional opportunities to reduce costs have

been identified

• These further opportunities have a potential

savings as much as $2 million

• Savings realized will further increase contingency

Further Cost Reducing Opportunities

• West Abutment – make wall vertical, eliminate

cofferdams

• Optimization of bridge lighting design
• Replace West Pier with extended pile configuration
• Reduction of number of piles under Bascule Pier
• East Abutment – make wall vertical, eliminate

cofferdams, eliminate piled walls, shorten east end span.

Further Cost Reducing Opportunities

Project Budget

Total project budget: $ 92.8 million Construction budget (incl. contingency): $ 66 million Other project costs: $ 26.8 million

(engineering design, project mgmt, insurance, legal, City staff, costs to date)

Fixed Contract price: $ 63.235 million

Timeline Milestones

Contractor On‐site April 2013 Construction Begins Summer 2013 New Bridge Opens Fall 2015 Project Completion March 2016

Summary

• Contract award concludes competitive process

involving world’s top bridge construction firms

• The process has delivered a fixed price contract within

the approved budget

• The new bridge includes all outlined amenities and

benefits and includes six engineering optimizations

• Construction begins this summer
• Regular reporting to Council will continue to occur

quarterly

Thank you