work zone safety using accelerated bridge construction (abc)
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Work Zone Safety Using Accelerated Bridge Construction (ABC). Rukhsana Lindsey, UDOT Presented by Jim McMinimee Principal Engineer, Applied Research Associates. Utah. Small State 2.5 M people $350 M Federal Program DOT 1650 employees Currently 6% unemployment statewide - PowerPoint PPT PresentationTRANSCRIPT
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Work Zone Safety Using Accelerated Bridge Construction (ABC)
Rukhsana Lindsey, UDOTPresented by Jim McMinimee
Principal Engineer, Applied Research Associates
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Utah Small State
• 2.5 M people• $350 M Federal Program• DOT 1650 employees • Currently 6% unemployment statewide
Big Transportation Program• 250+ projects• $3+ B under construction
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Our Need for Speed Customer driven culture Willing to take risks Implement new
technologies:• Accelerated Bridge Construction• Accelerate Pavement Construction• Diverging Diamond Interchanges
Increased partnerships
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Department Themes Accelerate Delivery Decrease and Minimize Detours or
Delays Encourage Innovation that speeds project or
provides value Get a Good PriceBalance of good price vs other themes
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New Business Model
• Societal Costs Minimized • Societal cost model includes safety costs• Lowest Construction Cost Lowest
Project Cost • Public Praise• Political Capital
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I-15 Design Build a Case Study in Project Acceleration
I-15 Design Build – SEP 14• $1.6 B Contract• 17 Miles, 130 Bridges, 7 Urban/3 Interstate Interchanges• 10 Year Maintenance Period
Drivers for Project• Public Support – 4 Years Instead of 9 Years• 2002 Winter Olympics
I – 15 Incentives• Quality, Project Management, MOT, Early Completion• Potential $50M
Post Mortem User Cost Study UofU Dr Martin• USER COSTS SAVED > $500M• Saved estimated 4400+ accidents over Traditional• 14 Lives Saved
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What is ABC? Innovative methods to decrease
bridge construction time Build elements offsite/outside traffic
area Transport to site and install rapidly
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Benefits of ABC Minimized traffic disruption – from
months to days Improved work zone safety – improved
worker safety Improved product quality – controlled
environment, cure times, easier access, etc.
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Innovative Technology
• First implementation costs more• Potential for new methods to cost less• Promise of time savings• Positive cost-benefit ratios• Promise of cost savings
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Utah Precast Deck Panel Projects
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Family of Innovative ABC Elements and Methods
Precast Concrete Elements
Modular Construction
Structure PlacementMethods
Innovative Accelerated
Bridge Construction
Accelerated Geotech
Work
Fast Track Contracting
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Benefits of ABC
Minimizes traffic disruption from months to days Improves work zone and worker safety User savings Improves product quality
• Controlled environment• Cure times• Easier access
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Utah ABC Costs18 projects $45M
I-215; 4500 South I-80; State St. to 1300 East
I-80; Mt. Delle to Lambs Canyon
3300 South over I-215 I-15; Widening, 500 North to I-215
Pioneer Crossing$0
$5,000,000
$10,000,000
$15,000,000
$20,000,000
$25,000,000
$30,000,000
User Savings Valued Added
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Animation
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Media Support
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UDOT ABC HistoryABC Element Projects Bridges
Self Propelled Modular Transporters (SPMT) 8 17Half Thickness Deck Panels 5 74Full Depth Deck Precast Deck Panels 15 21Precast Voided Slabs 1 2Approach Slab Panels 10 15Precast Sleeper Slabs 12 19Precast Abutments 3 5Precast Bent Caps 2 2Precast Deck – Slide-in Technique 3 5Precast Box Culvert 3 7Heavy Lift Cranes 3 4
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ProjectsI-84 Riverdale Road; Lego Bridge
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Projects800 North; Precast Deck Panels
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Projects4500 South over I-215; SPMT
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ProjectsEagle Canyon Bridge; Precast Deck Panels
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2009 Slide ins
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2009 Slide ins
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ProjectsEcho Canyon Bridge; Slide-in
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UDOT Research Study
Reviewing status of ABC Program 161 ABC projects Started with SPMT projects
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18 Accelerated Bridge Projects- SPMTs• Traffic impacts Closures and Detours of 2-3 days• Channelizing work zones of usual durations• Zero crashes within work zone(!)• Bridge built away from traffic with better
worker safety and productivity.• One statistical surprise – Slightly more accidents after
construction over.
Preliminary Results
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Public Support for ABC
3; 1.40% 4; 1.40% 5; 2.80%
6; 18.30%
7; 76.10%
1 2 3 4 5 6 7
Public Overall Satisfaction With Project Results(1 = not satisfied, 7 = very satisfied)
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Questions?