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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Delivering Major Minnesota Bridges
Hastings Bridge Design Build ProjectRedundancyand Service Life
March 5, 2013 Vincent Gastoni, PE
MnDOT – ACEC/MN Annual Conference
Leading Together-Innovative Solutions for an Evolving Industry
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Project Location Map
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Base Map Source: Google Maps
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Project Overview - Existing Bridge
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• Project replaces 1950 steel arch truss
• Lowest 1% in the state for overall sufficiency
• Highway 61 over Mississippi River
• Highest daily two-lane highway traffic volume in the state
• MnDOT Chapter 152 Bridge
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Project Overview - Aerial Plan
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Project Overview - Design-Build Process
• Design-Build SOQ Issued: October 2009
• Design Build Selection: June 2010
• MnDOT identified two acceptable alternatives
• RFP allowed Alternative Technical Concepts (ATC’s)
• Design Build Team:
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Project Overview - Design-Build Process
INNOVATIVE RFP FEATURES
• Alternative Technical Concepts (ATC’s)– Allow innovation and flexibility
• Pre Approved Elements (PAE)– Reduce risk and provide best value opportunities
o Redundancy Concepts for the Main Structure Segmento Scour Analysis Methodo Bridge Fixity and Thermal Expansion of Bridge No. 19004o Refined Analysis Method
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Project Overview - Design-Build Process
TECHNICAL PROPOSAL SCORING
• Bridge 34 Points
• Environmental Management 6 Points
• Maintenance of Traffic 5 Points
• Public Communications 2 Points
• Schedule 3 Points
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Project Overview - Design-Build Process
TECHNICAL PROPOSAL SCORING
• Bridge 34 Points
– Durability/Quality of Bridge No. 19004 13 Points
– Inspection/Maintenance 9 Points
– Geotechnical 5 Points
– Erection of Bridge No. 19004 4 Points
– Demolition of Bridge No. 5895 3 Points
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
SCORING DRIVES INNOVATION
• Selection =
Bid Price Technical Score
Project Overview - Design-Build Process
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
SCORING DRIVES INNOVATION
• Selection =
• Win Strategy=
Bid Price Technical Score
Minimize Bid PriceMaximize Technical Score
Project Overview - Design-Build Process
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
SCORING DRIVES INNOVATION
• Selection =
• Win Strategy=
• Use innovative ATC’s & PAE’s to:– Minimize Risks– Optimize Design Solution
Bid Price Technical Score
Minimize Bid PriceMaximize Technical Score
Project Overview - Design-Build Process
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Need A Better Mouse Trap
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Design-Build Process – Base Concepts
MnDOT RFP Baseline Options
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Design-Build Process – Base Concepts
MnDOT Cable Stayed Option
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Design-Build Process – Base Concepts
MnDOT Arch Option
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Base Concept Evaluation
• Evaluate Base Designs
– Preliminary engineering analysis
– Cost estimating exercises
• Produce Comprehensive Evaluation Matrix Tool
– Material costs & risks
• Develop Alternative Designs
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovation – Develop Alternatives
• Evaluate Alternative Designs
– Prescriptive design/performance criteria
– Aesthetic requirements
– Technical scoring criteria
– Cost & schedule impacts
• Add to Comprehensive Evaluation Matrix Tool
• Develop Overall Best Value Technical Approach
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovation – Develop Alternatives
Lunda/Ames-Parsons Alternatives
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovation – Develop Alternatives
•
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovation – Develop Alternatives
•
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Winning Alternative
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Project Architect: Bradley Touchstone, Touchstone Architecture
• Successful Proposal-Free Standing Tied Arch $120M
• 545 ft. Main Span
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Winning Alternative
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Project Architect: Bradley Touchstone, Touchstone Architecture
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Visual Quality Process & Color Selection
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Aesthetic Lighting
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Lighting Design: Illumination Arts
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Features - Concrete Tie
• Best value solution
• Higher level of redundancy
• Ease of inspection/maintenance
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• More durable than steel box
• No shop assembly and fit-up issues
• Active tension control
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Features - Concrete Knuckle
• Framed into pier and rib
• Improved durability/fit-up
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• Post-tensioned anchorage
• Highly redundant
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Features – Steel Box Arch Rib
• Aesthetically pleasing
• Improved maintenance
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• Simplified fabrication
• Best Value solution
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Features - Floor System Redundancy
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Features - Erection
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Features - Erection
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• Build low
TEMP TIE & FORMS
TEMP BRACING
FLOOR SYSTEM
ARCH RIB
TEMP LIFTING CONNECTION
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Features - Erection
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• Build Low On Land
TEMP TIE & FORMS
TEMP BRACING
FLOOR SYSTEM
ARCH RIB
TEMP LIFTING CONNECTION
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Features - Erection
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• Build Low On Land
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Erection
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• Move onto Barges Using SPMT’s
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Features - Erection
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• Move onto Barges Using SPMT’s
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Features - Erection
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• Float
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Features - Erection
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• Float
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Features - Erection
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• Skid
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Features - Erection
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• Skid
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Features - Erection
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• Skid
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Features - Erection
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• Lift
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Features - Erection
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• Lift
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Features - Erection
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• Lockoff
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Innovative Features - Erection
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• Get Some Sleep
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Other Innovative Features
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• Column Supported Embankment
• Long Span Precast Concrete Beams
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Other Innovative Features
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COLUMN SUPPORTED EMBANKMENT• 4” over 25 years• CSE -10’x10’ Pile Grid• Conc. Caps• Sand/Geogrid
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Other Innovative Features
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LONG SPAN PRECAST BEAMS
• Precast Pretensioned Concrete Beams
• 5 Spans of 9-Girder Lines
• 173’-7” Long Span
• Longest Beam Overall length = 174’-3”
• Innovative beam design became the basis of MnDOT’s new MW Long Span Precast Concrete Beam Standards
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Other Innovative Features
Photos: Joel Mich, Cretex
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LONG SPAN PRECAST BEAMS
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Other Innovative Features
Photos: Joel Mich, Cretex
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LONG SPAN PRECAST BEAMS
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Other Innovative Features
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LONG SPAN PRECAST BEAMS
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Summary
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• Innovative RFP Process
• Best Value Approach Drives Innovation
• MnDOT Partnering in Innovation
• Continued Commitment to Innovation
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HASTINGS TIED ARCH BRIDGE | REDUNDANCY AND SERVICE LIFE
Thank You
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