BRIDGES
Content
Prefabricated Bridge
Elements and Systems
in Europe and Japan
2004 FHWA/AASHTO
International Technology Scan
Harry Capers, P.E.,
New Jersey Department of
Transportation
April 15, 2005
Overview
• Need for Prefabricated Bridges
• Mission and Scope of 2004 Scan
• Implementation Recommendations
•
•
•
•
Bridge Movement Systems
Superstructure Systems
Deck Systems
Substructure Systems
• Current and Future Scan Activities
• Initial DOT Implementation Efforts
1
National Bridge Inventory
• Over 150,000 bridges
structurally deficient
or functionally obsolete
• 3,000 added annually
• Increasing traffic
volumes, weights
• Aging infrastructure
• Over 130,000 bridges
recommended for
replacement, ~$70B+
What is Driving the Change
from Conventional
Construction?
The infrastructure is aging – needed
now are innovative solutions that can
be built quicker and that last longer
¾ Goal: A minimum 75-yr service life
Currently:
Î Average bridge life is 42 yrs
Î Average bridge deck life is 20-25 yrs
2
Challenge of Bridge
Repair and Replacement
• Bridges must be
rehabilitated or replaced
while maintaining traffic
flow—“Fixing a car with
the engine running”
• Work-zone Concerns:
congestion, traffic speed,
time delays, accidents
Get in, Get out, Stay out!
• Public prefers short-term
shutdowns with long-term results
• Accelerated Construction
• Reduces Construction Time &
Traffic Control Costs
• Minimizes Traffic Congestion
• Reduces Highway Worker
& Motorist Exposure
• Enhances Safety
• Minimizes Impacts
• Promotes Construction Quality
3
Focus on Prefabricated
Elements and Systems
Scan Mission
To investigate and document applications
and experience of prefabricated bridges
in Japan and select European countries,
with emphasis on:
• Routine bridges with 20 ft–140 ft spans
• Innovative systems
• Replacement as well as new highway
and railroad bridges
• Seismic considerations and
emergency work
4
Scan Team
FHWA
State DOT’s
• Benjamin Tang, CoCo-Chair
• Claude Napier, Jr., VA
• Barry Brecto, WA
•
•
•
•
Industry
• Shri Bhide, PCA, National
Concrete Bridge Council
• Henry G. Russell,
Facilitator
• Market Development
Alliance, FRP (Invited)
• National Steel Bridge
Alliance (Invited)
Mary Lou Ralls, CoCo-Chair, TX
Harry Capers, NJ
William Nickas, FL
Dan Dorgan, MN
National Association of
County Engineers
• Eugene Calvert
Academia
• Eric Matsumoto, California
State University, Sacramento
Scan Organizer
• John O’
O’Neill, ATI
Focus Areas
• Minimized traffic disruption
• Improved work zone safety
• Minimized environmental impacts
• Improved constructibility
• Improved product quality
• Lower life-cycle costs
5
Scope
• Project Decision Processes
• Design and Construction Methods
• Innovative and Conventional Materials
• Cost Considerations
• Maintenance and Inspection
Scan Process
• Interview owners, designers,
fabricators, and contractors
on project experiences
• Examine and evaluate
prefabricated bridges via
field visits
• Evaluate documentation
• Report findings & develop
National Implementation Plan
6
Scan Countries
2. Netherlands
3. Belgium
1. Japan
5. France
4. Germany
Hosts
JAPAN
• Japan Highway Public Corporation
• East Japan Railway Company
• Mitsubishi Heavy Industries
• Sumitomo Mitsui Construction Company
• Mitsui Engineering and Shipbuilding
Company
• Kajima Corporation
NETHERLANDS/BELGIUM
• Mammoet Corporation
• Sarens
7
Hosts
GERMANY
• Bavarian Construction Ministry, Munich
• A3 Anschlusstelle, Frankfurt
• German Federal Highway
• Research Institute (BASt), Cologne
Hosts
FRANCE
• SNCF (French National Railway Authority)
• SETRA (Tech. Dept. for Public Works & Transp.)
• LCPC (Central Laboratory for Public Works)
• CERIB (Techical Ctr of Concrete Industry)
• CETE (Technical Studies Ctr for Public Works)
• CPCBTP (Producer)
• Lafarge Cement
8
Implementation
Recommendations
• Bridge Movement Systems
• Superstructure Systems
• Deck Systems
• Substructure Systems
Bridge Movement
Systems
• Self-Propelled Modular Transporters
(SPMTs)
• Other Bridge Installation Systems
• Horizontal Skidding
• Incremental Launching
• Floating Methods
• Pivoting
• Vertical Lifting
9
SPMTs
• Construct bridge off-line
then move on-line in hours
• 4-6 axle lines, 33 tons/axle
• Computer-controlled by one
operator
• Horizontal movement in any
direction, ~8% grades used
• Equal loads maintained on
axles on irregular surfaces
The Netherlands—Mammoet
10
Belgium—Sarens
SPMTs
Two 154-ton RR
Bridges, Germany
3600-ton, 390-ft Superstructure Moved in
2 hours, Netherlands
11
SPMTs
390-ft, 900-ton Twin
Steel Arch Bridges
Moved across Canal
1900-ton Bridge
Movement, Germany
SPMTs
Lifting and Rolling of Complete 2200-ton
RR Bridge 1309, Nohant le Pin, Normandy
12
Horizontal Skidding
Skidding of Complete
3600-ton Bridge Using
Strand Jacks, Normandy
72-hour Skidding
of 10,500-ton
Bridge/Abutments
on Track, UK
Incremental Launching
Arimatsu Viaduct,
Above Route 23,
Nagoya, Japan
• Two 6-span, 2150-ft,
13,000-ton bridges
• Each span launched
in 12-hour window
• 56 synchronized
550-ton, 9-in stroke
jacks control
movement
• Course correction at
each bent
• 2-in gap maintained
13
Floating
Floating 950-ton
Box Culvert Underpass,
22-hour installation,
St. Pierre du Vauvray
Pivoting
Pivoting 2700-ton 262-ft Superstructure
45 Degrees Using Synchronized Jacks
and Guide Pin, Viaduc do Ventabren
14
Lifting
Hydraulic Jacks Used to Lift
1300-ton Bridge Segment
Implementation
Recommendations
• Bridge Movement Systems
• Superstructure Systems
• Deck Systems
• Substructure Systems
15
Superstructure Systems
• Poutre Dalle System
• Partial-Depth Concrete Decks
Prefabricated on Steel/Concrete
Beams
• U-Shaped Segments
with Transverse Ribs
Poutre Dalle System
• Eliminates formwork, provides safe working surface
• Precast, pretensioned
inverted-tees side-by-side
• Overlapping hooks and CIP
for continuity
• L~20-82 ft, L/H~28-30 SS
• Width~16 in-80 in (28 ton)
• Fast, versatile, simple,
durable, economical, safe
16
Partial-Depth Precast
Decks on Steel or Concrete
Beams
Precast Deck on
Precast Deck on Steel
PC/PS Beam, Germany
Beam, Germany
U-Shaped Segments
with Transverse Ribs
Furukawa
Viaduct
L=4800 ft
SideSide-byby-side PC/PS
Box Girders
41 112112-148 ft spans
• Restrictions: weight, height, environment
• Limited space for casting & stock yard
• Segments ≤ 33 tons & ≤ 52 ft wide, haul
from plants w/in 37 mi
17
Hauling and Erection
Hauling of Section
Placement of precast
panels prior to CIP
deck pour
Mock-up Test
• Full-Scale simple span test (L=125 ft)
• Tested for all construction stages
• 3-D FEA also conducted
18
New Tomei Expressway
New Meishin Expressway
Implementation
Recommendations
• Bridge Movement Systems
• Superstructure Systems
• Deck Systems
• Substructure Systems
19
Deck Systems
• Full-Depth Prefabricated
Concrete Decks
• Deck Joint Closure Details
• Hybrid Steel-Concrete
Deck Systems
• Multiple Level Corrosion
Protection Systems
Full-Depth Pretensioned
Decks
• Reduces construction time, formwork, CIP
• Provides quality, work surface, safety
• Route 23 Nagoya, full-width pretensioned panels
(6.6 ft x 10.6 in x 49.2 ft) placed on steel girders
• Studs welded to girder, pockets grouted, closure
20
Connection Details
Overlapping loops
• Full anchorage
w/o splicing
• Minimizes CIP
• Rigid for handling
& placement
R/C vs. Pretensioned Decks
CIP Slab
Pretensioning allows
long-span panels,
reducing girder lines,
minimizes tension
PS Slab
21
Deck Joint Closure Details
• Transverse & longitudinal
joints for continuity
• Epoxy-coated loop bars
• Continuous center loop
• Bars threaded through
• Fiber-reinforced
expansive concrete
• Experimental testing
• Waterproof membrane &
asphalt wearing surface
Hybrid Steel-Concrete
Deck Systems
• Light-weight stay-in-place formwork with
transverse joists for fast erection
• Transverse joists support formwork & rebar
• Shear studs and CIP pour produce
composite deck system
22
Multiple-Level Corrosion
Protection Systems
Asphalt wearing surf.
Asphalt protective layer
Bituminous fabric sheet
Epoxy-coating cover
Concrete cover
Implementation
Recommendations
• Bridge Movement Systems
• Superstructure Systems
• Deck Systems
• Substructure Systems
23
SPER System
Sumitomo Precast form for resisting
Earthquakes and for Rapid construction
Segmental Pier System
Factory-manufactured
stay-in-place precast
concrete panels
w/CIP concrete
Panels serve as both
formwork & structural
elements.
SPER-LP System
• Piers up to ~40 ft
• 50% less construction time (660 ft total ht):
formwork and curing time savings
24
SPER-LP Fabrication
Rebar Fabrication
Formwork
After Casting
& Formwork Removal
In Stock
SPER-LP
Construction Sequence
Lifting Segment
Completed Piers
Placing Segment
25
SPER-HP System
• Piers up to ~164 ft
• 1/3 less in construction time (328 ft total ht):
formwork & lateral rebar installation
High Strength Ti
Longitudinal
Panel Re
Dowe
• Hollow section
• Two C sections w/ lateral rebar
• Lateral rebar coupled in field
• Ties anchored w/ U-bars
SPER-HP Fabrication
Casting Bed
Rebar Installation
Casting Concrete
Curing
Formwork
Stock
26
SPER-HP Transportation
Arrival at Site
Leaving Plant
Construction Sequence
Scaffolding
Coupling of Long. Bars
Rebar Installation
Coupled Bars
27
Construction Sequence
Pre-Assembling Forms
Erecting Outer Form
Applying Epoxy Joint
Construction Sequence
Intermediate HS Tie bars Forms Between Sections
Casting Between Panels
Completed Piers
28
Current and Future
Activities
• Disseminate Final Report
• Scan Technology Implementation Plan
• Implementation through Federal
Funding Programs, etc.
• Innovative Bridge Research and
Deployment (IBRD)
• Highways for LIFE
• Federal Bridge
STIP
• Identified 10 technologies in four
categories for implementation in U.S.
• STIP includes:
• Background
• Implementation Strategy
• Scan Team Leads
• Deliverables
• Timeframe
• Funds Required
• $85K Request for Development and
Dissemination
29
STIP Efforts
• Disseminate technology via meetings,
workshops, articles, and website
• Solicit Pilot Projects
• Obtain further information—design basis,
drawings, specifications, photos—from hosts
• Prepare Project Planning Guide and Draft
Specifications for use of SPMTs
• Translate documents, conduct lit search
• Recommend research
• Coordinate with NCHRP and other
organizations
Initial DOT Efforts
• MNDOT—Poutre Dalle
• “Poutre Dalle”-type deck slab for two bridges
under development based on Scan
• Interaction with Precasters to develop feasible
section without overhauling beds
• TxDOT—SPMTs: Bridge Replacements
along I-35 corridor widening through
central Texas.
• FDOT—SPMTs: Rapid Repair of I-10 after
Hurricane Ivan Damage
30
Hurricane Ivan I-10
Damage
East Side
West side
I-10 East Side Repair
•
•
Phase 1: 24-day contract
•
•
$250K/day incentive/disinc.
•
SPMTs were instrumental to
moving 265-ton spans
Shifted 12 spans from East
bound to open West bound
Contractor finished 7 days
earlyÆ$1.75M bonus
31
Future Directions
¾Widespread use of accelerated
construction (e.g., PBES) for bridges in
urban areas
¾In each case, engineering the solution
to meet the unique constraints; i.e.,
–
–
–
–
–
–
Reduced traffic disruption
Improved workwork-zone safety
Reduced environmental impact
Improved constructability
Improved quality
Lower lifelife-cycle costs
Future Directions, cont’d.
• More elements combined off-site
• More efficient, innovative prefabricated
bridge systems using the enhanced
properties of high performance materials
• More prefabricated substructures
• More innovative methods of
construction; e.g., use of self-propelled
modular transporters (SPMTs), other
total bridge movements.
32
Future Directions, cont’d.
Increased focus on durability to extend
bridge service life to 75 years
Rehabilitation of the existing
infrastructure, with more public
involvement (CSS solutions)
More owner, industry, consultant,
academia, public partnerships to find
optimum solutions
A Suggested Role for
You
Insist on consideration of innovative
technologies to accelerate construction
9 Be willing to specify the first use
9 Select a large project or multiple projects
with repetitive sections for the first use
9 Use contracting strategies that are
significant to the contractor
9 Include cost trade-offs in project estimate
9 Engage all stakeholders for their input,
from initial planning through construction
33
Available Resources
For PBES bridges and contact information
http://www.fhwa.dot.gov/bridge/prefab/
For Accelerated Construction Technology Transfer
(ACTT) Workshop information
http://www.fhwa.dot.gov/construction/accelerate
d/
• FHWA technical workshops on innovative
techniques
Mark your calendars!
FHWA National Prefabricated Bridge
Elements & Systems Workshop
December 12-14, 2005
San Diego, California
34
The future is here!:
Substructures
Looking for
a few champions
Thank You
Superstructures
& Decks
SPMT
35
Elements and Systems
in Europe and Japan
2004 FHWA/AASHTO
International Technology Scan
Harry Capers, P.E.,
New Jersey Department of
Transportation
April 15, 2005
Overview
• Need for Prefabricated Bridges
• Mission and Scope of 2004 Scan
• Implementation Recommendations
•
•
•
•
Bridge Movement Systems
Superstructure Systems
Deck Systems
Substructure Systems
• Current and Future Scan Activities
• Initial DOT Implementation Efforts
1
National Bridge Inventory
• Over 150,000 bridges
structurally deficient
or functionally obsolete
• 3,000 added annually
• Increasing traffic
volumes, weights
• Aging infrastructure
• Over 130,000 bridges
recommended for
replacement, ~$70B+
What is Driving the Change
from Conventional
Construction?
The infrastructure is aging – needed
now are innovative solutions that can
be built quicker and that last longer
¾ Goal: A minimum 75-yr service life
Currently:
Î Average bridge life is 42 yrs
Î Average bridge deck life is 20-25 yrs
2
Challenge of Bridge
Repair and Replacement
• Bridges must be
rehabilitated or replaced
while maintaining traffic
flow—“Fixing a car with
the engine running”
• Work-zone Concerns:
congestion, traffic speed,
time delays, accidents
Get in, Get out, Stay out!
• Public prefers short-term
shutdowns with long-term results
• Accelerated Construction
• Reduces Construction Time &
Traffic Control Costs
• Minimizes Traffic Congestion
• Reduces Highway Worker
& Motorist Exposure
• Enhances Safety
• Minimizes Impacts
• Promotes Construction Quality
3
Focus on Prefabricated
Elements and Systems
Scan Mission
To investigate and document applications
and experience of prefabricated bridges
in Japan and select European countries,
with emphasis on:
• Routine bridges with 20 ft–140 ft spans
• Innovative systems
• Replacement as well as new highway
and railroad bridges
• Seismic considerations and
emergency work
4
Scan Team
FHWA
State DOT’s
• Benjamin Tang, CoCo-Chair
• Claude Napier, Jr., VA
• Barry Brecto, WA
•
•
•
•
Industry
• Shri Bhide, PCA, National
Concrete Bridge Council
• Henry G. Russell,
Facilitator
• Market Development
Alliance, FRP (Invited)
• National Steel Bridge
Alliance (Invited)
Mary Lou Ralls, CoCo-Chair, TX
Harry Capers, NJ
William Nickas, FL
Dan Dorgan, MN
National Association of
County Engineers
• Eugene Calvert
Academia
• Eric Matsumoto, California
State University, Sacramento
Scan Organizer
• John O’
O’Neill, ATI
Focus Areas
• Minimized traffic disruption
• Improved work zone safety
• Minimized environmental impacts
• Improved constructibility
• Improved product quality
• Lower life-cycle costs
5
Scope
• Project Decision Processes
• Design and Construction Methods
• Innovative and Conventional Materials
• Cost Considerations
• Maintenance and Inspection
Scan Process
• Interview owners, designers,
fabricators, and contractors
on project experiences
• Examine and evaluate
prefabricated bridges via
field visits
• Evaluate documentation
• Report findings & develop
National Implementation Plan
6
Scan Countries
2. Netherlands
3. Belgium
1. Japan
5. France
4. Germany
Hosts
JAPAN
• Japan Highway Public Corporation
• East Japan Railway Company
• Mitsubishi Heavy Industries
• Sumitomo Mitsui Construction Company
• Mitsui Engineering and Shipbuilding
Company
• Kajima Corporation
NETHERLANDS/BELGIUM
• Mammoet Corporation
• Sarens
7
Hosts
GERMANY
• Bavarian Construction Ministry, Munich
• A3 Anschlusstelle, Frankfurt
• German Federal Highway
• Research Institute (BASt), Cologne
Hosts
FRANCE
• SNCF (French National Railway Authority)
• SETRA (Tech. Dept. for Public Works & Transp.)
• LCPC (Central Laboratory for Public Works)
• CERIB (Techical Ctr of Concrete Industry)
• CETE (Technical Studies Ctr for Public Works)
• CPCBTP (Producer)
• Lafarge Cement
8
Implementation
Recommendations
• Bridge Movement Systems
• Superstructure Systems
• Deck Systems
• Substructure Systems
Bridge Movement
Systems
• Self-Propelled Modular Transporters
(SPMTs)
• Other Bridge Installation Systems
• Horizontal Skidding
• Incremental Launching
• Floating Methods
• Pivoting
• Vertical Lifting
9
SPMTs
• Construct bridge off-line
then move on-line in hours
• 4-6 axle lines, 33 tons/axle
• Computer-controlled by one
operator
• Horizontal movement in any
direction, ~8% grades used
• Equal loads maintained on
axles on irregular surfaces
The Netherlands—Mammoet
10
Belgium—Sarens
SPMTs
Two 154-ton RR
Bridges, Germany
3600-ton, 390-ft Superstructure Moved in
2 hours, Netherlands
11
SPMTs
390-ft, 900-ton Twin
Steel Arch Bridges
Moved across Canal
1900-ton Bridge
Movement, Germany
SPMTs
Lifting and Rolling of Complete 2200-ton
RR Bridge 1309, Nohant le Pin, Normandy
12
Horizontal Skidding
Skidding of Complete
3600-ton Bridge Using
Strand Jacks, Normandy
72-hour Skidding
of 10,500-ton
Bridge/Abutments
on Track, UK
Incremental Launching
Arimatsu Viaduct,
Above Route 23,
Nagoya, Japan
• Two 6-span, 2150-ft,
13,000-ton bridges
• Each span launched
in 12-hour window
• 56 synchronized
550-ton, 9-in stroke
jacks control
movement
• Course correction at
each bent
• 2-in gap maintained
13
Floating
Floating 950-ton
Box Culvert Underpass,
22-hour installation,
St. Pierre du Vauvray
Pivoting
Pivoting 2700-ton 262-ft Superstructure
45 Degrees Using Synchronized Jacks
and Guide Pin, Viaduc do Ventabren
14
Lifting
Hydraulic Jacks Used to Lift
1300-ton Bridge Segment
Implementation
Recommendations
• Bridge Movement Systems
• Superstructure Systems
• Deck Systems
• Substructure Systems
15
Superstructure Systems
• Poutre Dalle System
• Partial-Depth Concrete Decks
Prefabricated on Steel/Concrete
Beams
• U-Shaped Segments
with Transverse Ribs
Poutre Dalle System
• Eliminates formwork, provides safe working surface
• Precast, pretensioned
inverted-tees side-by-side
• Overlapping hooks and CIP
for continuity
• L~20-82 ft, L/H~28-30 SS
• Width~16 in-80 in (28 ton)
• Fast, versatile, simple,
durable, economical, safe
16
Partial-Depth Precast
Decks on Steel or Concrete
Beams
Precast Deck on
Precast Deck on Steel
PC/PS Beam, Germany
Beam, Germany
U-Shaped Segments
with Transverse Ribs
Furukawa
Viaduct
L=4800 ft
SideSide-byby-side PC/PS
Box Girders
41 112112-148 ft spans
• Restrictions: weight, height, environment
• Limited space for casting & stock yard
• Segments ≤ 33 tons & ≤ 52 ft wide, haul
from plants w/in 37 mi
17
Hauling and Erection
Hauling of Section
Placement of precast
panels prior to CIP
deck pour
Mock-up Test
• Full-Scale simple span test (L=125 ft)
• Tested for all construction stages
• 3-D FEA also conducted
18
New Tomei Expressway
New Meishin Expressway
Implementation
Recommendations
• Bridge Movement Systems
• Superstructure Systems
• Deck Systems
• Substructure Systems
19
Deck Systems
• Full-Depth Prefabricated
Concrete Decks
• Deck Joint Closure Details
• Hybrid Steel-Concrete
Deck Systems
• Multiple Level Corrosion
Protection Systems
Full-Depth Pretensioned
Decks
• Reduces construction time, formwork, CIP
• Provides quality, work surface, safety
• Route 23 Nagoya, full-width pretensioned panels
(6.6 ft x 10.6 in x 49.2 ft) placed on steel girders
• Studs welded to girder, pockets grouted, closure
20
Connection Details
Overlapping loops
• Full anchorage
w/o splicing
• Minimizes CIP
• Rigid for handling
& placement
R/C vs. Pretensioned Decks
CIP Slab
Pretensioning allows
long-span panels,
reducing girder lines,
minimizes tension
PS Slab
21
Deck Joint Closure Details
• Transverse & longitudinal
joints for continuity
• Epoxy-coated loop bars
• Continuous center loop
• Bars threaded through
• Fiber-reinforced
expansive concrete
• Experimental testing
• Waterproof membrane &
asphalt wearing surface
Hybrid Steel-Concrete
Deck Systems
• Light-weight stay-in-place formwork with
transverse joists for fast erection
• Transverse joists support formwork & rebar
• Shear studs and CIP pour produce
composite deck system
22
Multiple-Level Corrosion
Protection Systems
Asphalt wearing surf.
Asphalt protective layer
Bituminous fabric sheet
Epoxy-coating cover
Concrete cover
Implementation
Recommendations
• Bridge Movement Systems
• Superstructure Systems
• Deck Systems
• Substructure Systems
23
SPER System
Sumitomo Precast form for resisting
Earthquakes and for Rapid construction
Segmental Pier System
Factory-manufactured
stay-in-place precast
concrete panels
w/CIP concrete
Panels serve as both
formwork & structural
elements.
SPER-LP System
• Piers up to ~40 ft
• 50% less construction time (660 ft total ht):
formwork and curing time savings
24
SPER-LP Fabrication
Rebar Fabrication
Formwork
After Casting
& Formwork Removal
In Stock
SPER-LP
Construction Sequence
Lifting Segment
Completed Piers
Placing Segment
25
SPER-HP System
• Piers up to ~164 ft
• 1/3 less in construction time (328 ft total ht):
formwork & lateral rebar installation
High Strength Ti
Longitudinal
Panel Re
Dowe
• Hollow section
• Two C sections w/ lateral rebar
• Lateral rebar coupled in field
• Ties anchored w/ U-bars
SPER-HP Fabrication
Casting Bed
Rebar Installation
Casting Concrete
Curing
Formwork
Stock
26
SPER-HP Transportation
Arrival at Site
Leaving Plant
Construction Sequence
Scaffolding
Coupling of Long. Bars
Rebar Installation
Coupled Bars
27
Construction Sequence
Pre-Assembling Forms
Erecting Outer Form
Applying Epoxy Joint
Construction Sequence
Intermediate HS Tie bars Forms Between Sections
Casting Between Panels
Completed Piers
28
Current and Future
Activities
• Disseminate Final Report
• Scan Technology Implementation Plan
• Implementation through Federal
Funding Programs, etc.
• Innovative Bridge Research and
Deployment (IBRD)
• Highways for LIFE
• Federal Bridge
STIP
• Identified 10 technologies in four
categories for implementation in U.S.
• STIP includes:
• Background
• Implementation Strategy
• Scan Team Leads
• Deliverables
• Timeframe
• Funds Required
• $85K Request for Development and
Dissemination
29
STIP Efforts
• Disseminate technology via meetings,
workshops, articles, and website
• Solicit Pilot Projects
• Obtain further information—design basis,
drawings, specifications, photos—from hosts
• Prepare Project Planning Guide and Draft
Specifications for use of SPMTs
• Translate documents, conduct lit search
• Recommend research
• Coordinate with NCHRP and other
organizations
Initial DOT Efforts
• MNDOT—Poutre Dalle
• “Poutre Dalle”-type deck slab for two bridges
under development based on Scan
• Interaction with Precasters to develop feasible
section without overhauling beds
• TxDOT—SPMTs: Bridge Replacements
along I-35 corridor widening through
central Texas.
• FDOT—SPMTs: Rapid Repair of I-10 after
Hurricane Ivan Damage
30
Hurricane Ivan I-10
Damage
East Side
West side
I-10 East Side Repair
•
•
Phase 1: 24-day contract
•
•
$250K/day incentive/disinc.
•
SPMTs were instrumental to
moving 265-ton spans
Shifted 12 spans from East
bound to open West bound
Contractor finished 7 days
earlyÆ$1.75M bonus
31
Future Directions
¾Widespread use of accelerated
construction (e.g., PBES) for bridges in
urban areas
¾In each case, engineering the solution
to meet the unique constraints; i.e.,
–
–
–
–
–
–
Reduced traffic disruption
Improved workwork-zone safety
Reduced environmental impact
Improved constructability
Improved quality
Lower lifelife-cycle costs
Future Directions, cont’d.
• More elements combined off-site
• More efficient, innovative prefabricated
bridge systems using the enhanced
properties of high performance materials
• More prefabricated substructures
• More innovative methods of
construction; e.g., use of self-propelled
modular transporters (SPMTs), other
total bridge movements.
32
Future Directions, cont’d.
Increased focus on durability to extend
bridge service life to 75 years
Rehabilitation of the existing
infrastructure, with more public
involvement (CSS solutions)
More owner, industry, consultant,
academia, public partnerships to find
optimum solutions
A Suggested Role for
You
Insist on consideration of innovative
technologies to accelerate construction
9 Be willing to specify the first use
9 Select a large project or multiple projects
with repetitive sections for the first use
9 Use contracting strategies that are
significant to the contractor
9 Include cost trade-offs in project estimate
9 Engage all stakeholders for their input,
from initial planning through construction
33
Available Resources
For PBES bridges and contact information
http://www.fhwa.dot.gov/bridge/prefab/
For Accelerated Construction Technology Transfer
(ACTT) Workshop information
http://www.fhwa.dot.gov/construction/accelerate
d/
• FHWA technical workshops on innovative
techniques
Mark your calendars!
FHWA National Prefabricated Bridge
Elements & Systems Workshop
December 12-14, 2005
San Diego, California
34
The future is here!:
Substructures
Looking for
a few champions
Thank You
Superstructures
& Decks
SPMT
35
