Utah Department of Transportation -our experiences-

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Transcript Utah Department of Transportation -our experiences-

Work Zone Safety Using Accelerated
Bridge Construction (ABC)
Rukhsana Lindsey, UDOT
Presented by Jim McMinimee
Principal Engineer, Applied Research
Associates
Utah
 Small State
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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 Cost
Project Cost
• Public Praise
• Political Capital
Lowest
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
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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
Innovative
Accelerated
Bridge
Construction
Precast
Concrete
Elements
Modular
Construction
Structure
Placement
Methods
Accelerated
Geotech
Work
Fast Track
Contracting
Benefits of ABC
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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
User Savings Valued Added
$30,000,000
$25,000,000
$20,000,000
$15,000,000
$10,000,000
$5,000,000
$0
I-215; 4500 South
I-80; State St. to 1300 I-80; Mt. Delle to Lambs 3300 South over I-215
East
Canyon
I-15; Widening, 500
North to I-215
Pioneer Crossing
Animation
Media Support
UDOT ABC History
ABC Element
Projects
Bridges
Self Propelled Modular Transporters (SPMT)
8
17
Half Thickness Deck Panels
5
74
Full Depth Deck Precast Deck Panels
15
21
Precast Voided Slabs
1
2
Approach Slab Panels
10
15
Precast Sleeper Slabs
12
19
Precast Abutments
3
5
Precast Bent Caps
2
2
Precast Deck – Slide-in Technique
3
5
Precast Box Culvert
3
7
Heavy Lift Cranes
3
4
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
2009 Slide ins
Projects
Echo Canyon Bridge; Slide-in
UDOT Research Study
 Reviewing status of ABC Program
 161 ABC projects
 Started with SPMT projects
Preliminary Results
 18 Accelerated Bridge Projects- SPMTs
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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.
Public Support for ABC
Public Overall Satisfaction With Project Results
(1 = not satisfied, 7 = very satisfied)
2; 3; 1.40%
4; 1.40%
5; 2.80%
0.00%
1; 0.00%
6; 18.30%
7; 76.10%
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Questions?