Upload
johnathan-lief
View
230
Download
0
Tags:
Embed Size (px)
Citation preview
Work Zone Safety Using Accelerated Bridge Construction (ABC)
Rukhsana Lindsey, UDOTPresented 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 PriceBalance of good price vs other themes
New Business Model
• Societal Costs Minimized • Societal cost model includes safety costs• Lowest Construction Cost Lowest
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 4400+ 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 PlacementMethods
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 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
Animation
Media Support
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
ProjectsI-84 Riverdale Road; Lego Bridge
Projects800 North; Precast Deck Panels
Projects4500 South over I-215; SPMT
ProjectsEagle Canyon Bridge; Precast Deck Panels
2009 Slide ins
2009 Slide ins
ProjectsEcho 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
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)
Questions?