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 Big Transportation Program 250+ projects $3+ B under construction

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

Department Themes Accelerate Delivery Decrease and Minimize Detours or Delays Encourage Innovation that speeds project or provides value Get a Good Price Balance of good price vs other themes

New Business Model Societal Costs Minimized Societal cost model includes safety costs Lowest Construction CostLowest Project Cost Public Praise Political Capital

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 accidents over Traditional 14 Lives Saved

What is ABC? Innovative methods to decrease bridge construction time Build elements offsite/outside traffic area Transport to site and install rapidly

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.

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

Utah Precast Deck Panel Projects

Family of Innovative ABC Elements and Methods Precast Concrete Elements Modular Construction Structure Placement Methods Innovative Accelerated Bridge Construction Accelerated Geotech Work Fast Track Contracting

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

Utah ABC Costs 18 projects $45M

Animation

Media Support

UDOT ABC History ABC ElementProjectsBridges Self Propelled Modular Transporters (SPMT)817 Half Thickness Deck Panels574 Full Depth Deck Precast Deck Panels1521 Precast Voided Slabs12 Approach Slab Panels1015 Precast Sleeper Slabs1219 Precast Abutments35 Precast Bent Caps22 Precast Deck – Slide-in Technique35 Precast Box Culvert37 Heavy Lift Cranes34

Projects I-84 Riverdale Road; Lego Bridge

Projects 800 North; Precast Deck Panels

Projects 4500 South over I-215; SPMT

Projects Eagle Canyon Bridge; Precast Deck Panels

2009 Slide ins

Projects Echo Canyon Bridge; Slide-in

UDOT Research Study Reviewing status of ABC Program 161 ABC projects Started with SPMT projects

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

Public Support for ABC Public Overall Satisfaction With Project Results (1 = not satisfied, 7 = very satisfied)

Questions?