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 1 Prefabricated Bridge Prefabricated Bridge Elements and Systems Elements and Systems in Europe and Japan in Europe and Japan 2004 FHWA/AASHTO 2004 FHWA/AASHTO International Technology Scan International Technology Scan Harry Capers, P.E. , Harry Capers, P.E., Ne w Jersey Department of New Jersey Department of Transportation Transportation  Ap r il 15, 2005  A pr il 15, 2005 Overview Overview Need for Prefabricated Brid ges Need for Prefabric ated Bridges Mission and Sco pe of 200 4 Scan Mission and Scope of 2004 Scan Implementation Recommendations Implementation Recommendations Bridge Movement Systems Bri dge Movement Systems Superstructure Systems Superstructure Systems Deck Systems Deck Systems Substr ucture Systems Substructure Systems Current and Future Scan Activities Current and Future Scan Activi ties Initial DOT Implementation Efforts Initial DOT Implementation Effo rts

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  • 1Prefabricated Bridge Prefabricated Bridge Elements and SystemsElements and Systemsin Europe and Japanin Europe and Japan

    2004 FHWA/AASHTO 2004 FHWA/AASHTO International Technology ScanInternational Technology Scan

    Harry Capers, P.E., Harry Capers, P.E., New Jersey Department of New Jersey Department of

    TransportationTransportationApril 15, 2005April 15, 2005

    OverviewOverview Need for Prefabricated BridgesNeed for Prefabricated Bridges Mission and Scope of 2004 ScanMission and Scope of 2004 Scan Implementation RecommendationsImplementation Recommendations

    Bridge Movement SystemsBridge Movement Systems Superstructure SystemsSuperstructure Systems Deck SystemsDeck Systems Substructure SystemsSubstructure Systems

    Current and Future Scan ActivitiesCurrent and Future Scan Activities Initial DOT Implementation EffortsInitial DOT Implementation Efforts

  • 2National Bridge InventoryNational Bridge Inventory

    Over 150,000 bridges Over 150,000 bridges structurally deficient structurally deficient or functionally obsoleteor functionally obsolete

    3,000 added annually3,000 added annually Increasing traffic Increasing traffic

    volumes, weightsvolumes, weights Aging infrastructureAging infrastructure

    Over 130,000 bridges Over 130,000 bridges recommended for recommended for replacement, ~$70B+replacement, ~$70B+

    What is Driving the Change What is Driving the Change from Conventional from Conventional Construction?Construction? The infrastructure is aging needed

    now are innovative solutions that canbe built quicker and that last longer

    Goal: A minimum 75-yr service life Currently: Average bridge life is 42 yrs Average bridge deck life is 20-25 yrs

  • 3Challenge of Bridge Challenge of Bridge Repair and ReplacementRepair and Replacement

    Bridges must beBridges must berehabilitated or replacedrehabilitated or replacedwhile maintaining trafficwhile maintaining trafficflowflowFixing a car with Fixing a car with the engine runningthe engine running

    WorkWork--zone Concerns: zone Concerns: congestion, traffic speed, congestion, traffic speed, time delays, accidentstime delays, accidents

    Get in, Get out, Stay out!Get in, Get out, Stay out! Public prefers shortPublic prefers short--term term

    shutdowns with longshutdowns with long--term resultsterm results Accelerated ConstructionAccelerated Construction

    Reduces Construction Time &Reduces Construction Time &Traffic Control CostsTraffic Control Costs

    Minimizes Traffic CongestionMinimizes Traffic Congestion Reduces Highway Worker Reduces Highway Worker & Motorist Exposure& Motorist Exposure

    Enhances SafetyEnhances Safety Minimizes Impacts Minimizes Impacts Promotes Construction QualityPromotes Construction Quality

  • 4Focus on Prefabricated Focus on Prefabricated Elements and SystemsElements and Systems

    Scan MissionScan MissionTo investigate and document applications To investigate and document applications and experience of prefabricated bridges and experience of prefabricated bridges in Japan and select European countries, in Japan and select European countries, with emphasis on:with emphasis on:

    Routine bridges with 20 ftRoutine bridges with 20 ft140 ft spans140 ft spans Innovative systemsInnovative systems Replacement as well as new highway Replacement as well as new highway

    and railroad bridgesand railroad bridges Seismic considerations and Seismic considerations and

    emergency workemergency work

  • 5Scan TeamScan TeamFHWAFHWA Benjamin Tang, CoBenjamin Tang, Co--ChairChair Claude Napier, Jr., VAClaude Napier, Jr., VA Barry Brecto, WABarry Brecto, WA

    IndustryIndustry Shri Bhide, PCA, National Shri Bhide, PCA, National

    Concrete Bridge Council Concrete Bridge Council Henry G. Russell, Henry G. Russell,

    FacilitatorFacilitator Market Development Market Development

    Alliance, FRP (Invited)Alliance, FRP (Invited) National Steel Bridge National Steel Bridge

    Alliance (Invited)Alliance (Invited)

    State DOTState DOTss Mary Lou Ralls, CoMary Lou Ralls, Co--Chair, TXChair, TX Harry Capers, NJHarry Capers, NJ William Nickas, FLWilliam Nickas, FL Dan Dorgan, MNDan Dorgan, MN

    National Association of National Association of County EngineersCounty Engineers

    Eugene CalvertEugene Calvert

    AcademiaAcademia Eric Matsumoto, California Eric Matsumoto, California

    State University, SacramentoState University, Sacramento

    Scan OrganizerScan Organizer John OJohn ONeill, ATINeill, ATI

    Focus AreasFocus Areas Minimized traffic disruptionMinimized traffic disruption

    Improved work zone safetyImproved work zone safety

    Minimized environmental impactsMinimized environmental impacts

    Improved constructibilityImproved constructibility

    Improved product qualityImproved product quality

    Lower lifeLower life--cycle costscycle costs

  • 6ScopeScope Project Decision ProcessesProject Decision Processes

    Design and Construction MethodsDesign and Construction Methods

    Innovative and Conventional MaterialsInnovative and Conventional Materials

    Cost Considerations Cost Considerations

    Maintenance and InspectionMaintenance and Inspection

    Scan ProcessScan Process

    Interview owners, designers, Interview owners, designers, fabricators, and contractors fabricators, and contractors on project experienceson project experiences

    Examine and evaluate Examine and evaluate prefabricated bridges via prefabricated bridges via field visitsfield visits

    Evaluate documentationEvaluate documentation

    Report findings & develop Report findings & develop National Implementation PlanNational Implementation Plan

  • 7Scan CountriesScan Countries

    1. Japan1. Japan

    2. Netherlands2. Netherlands 3. Belgium3. Belgium

    4. Germany4. Germany5. France5. France

    HostsHostsJAPANJAPAN Japan Highway Public CorporationJapan Highway Public Corporation East Japan Railway CompanyEast Japan Railway Company Mitsubishi Heavy IndustriesMitsubishi Heavy Industries Sumitomo Mitsui Construction CompanySumitomo Mitsui Construction Company Mitsui Engineering and Shipbuilding Mitsui Engineering and Shipbuilding

    CompanyCompany Kajima CorporationKajima CorporationNETHERLANDS/BELGIUMNETHERLANDS/BELGIUM MammoetMammoet CorporationCorporation SarensSarens

  • 8HostsHostsGERMANYGERMANY Bavarian Construction Ministry, MunichBavarian Construction Ministry, Munich A3 A3 AnschlusstelleAnschlusstelle, Frankfurt, Frankfurt German Federal HighwayGerman Federal Highway Research Institute (Research Institute (BAStBASt), Cologne), Cologne

    FRANCEFRANCE SNCF (French National Railway Authority)SNCF (French National Railway Authority) SETRA (Tech. Dept. for Public Works & SETRA (Tech. Dept. for Public Works & TranspTransp.).) LCPC (Central Laboratory for Public Works)LCPC (Central Laboratory for Public Works) CERIB (CERIB (TechicalTechical CtrCtr of Concrete Industry)of Concrete Industry) CETE (Technical Studies CETE (Technical Studies CtrCtr for Public Works)for Public Works) CPCBTP (Producer)CPCBTP (Producer) Lafarge CementLafarge Cement

    HostsHosts

  • 9Implementation Implementation RecommendationsRecommendations

    Bridge Movement SystemsBridge Movement Systems Superstructure SystemsSuperstructure Systems Deck SystemsDeck Systems Substructure SystemsSubstructure Systems

    Bridge Movement Bridge Movement SystemsSystems

    SelfSelf--Propelled Modular Transporters Propelled Modular Transporters ((SPMTsSPMTs))

    Other Bridge Installation SystemsOther Bridge Installation Systems Horizontal SkiddingHorizontal Skidding Incremental LaunchingIncremental Launching Floating MethodsFloating Methods PivotingPivoting Vertical LiftingVertical Lifting

  • 10

    SPMTsSPMTs

    Construct bridge offConstruct bridge off--line line then move onthen move on--line in hoursline in hours

    44--6 axle lines, 33 tons/axle6 axle lines, 33 tons/axle ComputerComputer--controlled by one controlled by one

    operatoroperator Horizontal movement in any Horizontal movement in any

    direction, ~8% grades useddirection, ~8% grades used Equal loads maintained on Equal loads maintained on

    axles on irregular surfacesaxles on irregular surfaces

    The NetherlandsThe NetherlandsMammoetMammoet

  • 11

    BelgiumBelgiumSarensSarens

    Two 154Two 154--ton RR ton RR Bridges, GermanyBridges, Germany

    SPMTsSPMTs

    36003600--ton, 390ton, 390--ft Superft Super--structure Moved in structure Moved in

    2 hours, Netherlands2 hours, Netherlands

  • 12

    SPMTsSPMTs

    19001900--ton Bridge ton Bridge Movement, GermanyMovement, Germany

    390390--ft, 900ft, 900--ton Twin ton Twin Steel Arch Bridges Steel Arch Bridges

    Moved across CanalMoved across Canal

    Lifting and Rolling of Complete 2200Lifting and Rolling of Complete 2200--ton ton RR Bridge 1309, RR Bridge 1309, NohantNohant le Pin, Normandyle Pin, Normandy

    SPMTsSPMTs

  • 13

    Horizontal SkiddingHorizontal Skidding

    Skidding of Complete Skidding of Complete 36003600--ton Bridge Using ton Bridge Using

    Strand Jacks, NormandyStrand Jacks, Normandy

    7272--hour Skidding hour Skidding of 10,500of 10,500--ton ton

    Bridge/Abutments Bridge/Abutments on Track, UKon Track, UK

    Incremental LaunchingIncremental Launching

    ArimatsuArimatsu Viaduct, Viaduct, Above Route 23, Above Route 23, Nagoya, JapanNagoya, Japan

    Two 6Two 6--span, 2150span, 2150--ft, ft, 13,00013,000--ton bridgeston bridges

    Each span launched Each span launched in 12in 12--hour windowhour window

    56 synchronized 56 synchronized 550550--ton, 9ton, 9--in stroke in stroke jacks control jacks control movementmovement

    Course correction at Course correction at each benteach bent

    22--in gap maintainedin gap maintained

  • 14

    FloatingFloating

    Floating 950Floating 950--ton ton Box Culvert Underpass, Box Culvert Underpass,

    2222--hour installation, hour installation, St. Pierre St. Pierre dudu VauvrayVauvray

    PivotingPivoting

    Pivoting 2700Pivoting 2700--ton 262ton 262--ft Superstructure ft Superstructure 45 Degrees Using Synchronized Jacks 45 Degrees Using Synchronized Jacks and Guide Pin, and Guide Pin, ViaducViaduc do do VentabrenVentabren

  • 15

    LiftingLifting

    Hydraulic Jacks Used to Lift Hydraulic Jacks Used to Lift 13001300--ton Bridge Segmentton Bridge Segment

    Implementation Implementation RecommendationsRecommendations

    Bridge Movement SystemsBridge Movement Systems Superstructure SystemsSuperstructure Systems Deck SystemsDeck Systems Substructure SystemsSubstructure Systems

  • 16

    Superstructure SystemsSuperstructure Systems

    PoutrePoutre DalleDalle SystemSystem

    PartialPartial--Depth Concrete Decks Depth Concrete Decks Prefabricated on Steel/Concrete Prefabricated on Steel/Concrete Beams Beams

    UU--Shaped Segments Shaped Segments with Transverse Ribswith Transverse Ribs

    PoutrePoutre DalleDalle SystemSystem Eliminates formwork, proEliminates formwork, pro--

    vides safe working surfacevides safe working surface Precast, pretensioned Precast, pretensioned

    invertedinverted--tees sidetees side--byby--sideside Overlapping hooks and CIP Overlapping hooks and CIP

    for continuityfor continuity L~20L~20--82 ft, L/H~2882 ft, L/H~28--30 SS30 SS Width~16 inWidth~16 in--80 in (28 ton)80 in (28 ton) Fast, versatile, simple, Fast, versatile, simple,

    durable, economical, safedurable, economical, safe

  • 17

    PartialPartial--Depth Precast Depth Precast Decks on Steel or Concrete Decks on Steel or Concrete BeamsBeams

    Precast Deck on Precast Deck on PC/PS Beam, GermanyPC/PS Beam, Germany

    Precast Deck on Steel Precast Deck on Steel Beam, GermanyBeam, Germany

    UU--Shaped Segments Shaped Segments with Transverse Ribswith Transverse Ribs

    Restrictions: weight, height, environmentRestrictions: weight, height, environment Limited space for casting & stock yardLimited space for casting & stock yard Segments Segments 33 tons & 33 tons & 52 ft wide, haul 52 ft wide, haul

    from plants w/in 37 mifrom plants w/in 37 mi

    Furukawa Furukawa ViaductViaduct

    L=4800 ftL=4800 ft

    SideSide--byby--side PC/PS side PC/PS Box Girders Box Girders

    41 11241 112--148 ft spans148 ft spans

  • 18

    Hauling and Erection Hauling and Erection

    Hauling of SectionHauling of Section Placement of precast Placement of precast panels prior to CIP panels prior to CIP

    deck pourdeck pour

    FullFull--Scale simple span test (L=125 ft) Scale simple span test (L=125 ft) Tested for all construction stagesTested for all construction stages 33--D FEA also conductedD FEA also conducted

    MockMock--upup TestTest

  • 19

    New New TomeiTomei ExpresswayExpresswayNew New MeishinMeishin ExpresswayExpressway

    Implementation Implementation RecommendationsRecommendations

    Bridge Movement SystemsBridge Movement Systems Superstructure SystemsSuperstructure Systems Deck SystemsDeck Systems Substructure SystemsSubstructure Systems

  • 20

    Deck SystemsDeck Systems

    FullFull--Depth Prefabricated Depth Prefabricated Concrete DecksConcrete Decks

    Deck Joint Closure DetailsDeck Joint Closure Details Hybrid SteelHybrid Steel--Concrete Concrete

    Deck SystemsDeck Systems Multiple Level Corrosion Multiple Level Corrosion

    Protection Systems Protection Systems

    ReducesReduces construction construction timetime, , formworkformwork, CIP, CIP ProvidesProvides qualityquality, , workwork surface, surface, safetysafety Route 23 Nagoya, fRoute 23 Nagoya, fullull--width pretensioned panels width pretensioned panels

    (6.6 ft x 10.6 in x 49.2 ft) placed on steel girders(6.6 ft x 10.6 in x 49.2 ft) placed on steel girders Studs welded to girder, pockets grouted, closureStuds welded to girder, pockets grouted, closure

    FullFull--Depth Pretensioned Depth Pretensioned DecksDecks

  • 21

    Connection DetailsConnection DetailsOverlapping loopsOverlapping loops Full anchorage Full anchorage

    w/o splicingw/o splicing Minimizes CIPMinimizes CIP Rigid for handling Rigid for handling

    & placement& placement

    R/C vs. Pretensioned DecksR/C vs. Pretensioned Decks

    CIP Slab

    PS Slab

    Pretensioning Pretensioning allows allows longlong--span panels, span panels, reducing girder lines, reducing girder lines, minimizes tensionminimizes tension

  • 22

    Deck Joint Closure DetailsDeck Joint Closure Details Transverse & longitudinal Transverse & longitudinal

    joints for continuityjoints for continuity EpoxyEpoxy--coated loop barscoated loop bars Continuous center loopContinuous center loop Bars threaded throughBars threaded through FiberFiber--reinforced reinforced

    expansive concreteexpansive concrete Experimental testingExperimental testing Waterproof membrane & Waterproof membrane &

    asphalt wearing surfaceasphalt wearing surface

    Hybrid SteelHybrid Steel--ConcreteConcreteDeck SystemsDeck Systems

    LightLight--weight stayweight stay--inin--place formwork with place formwork with transverse joists for fast erectiontransverse joists for fast erection

    Transverse joists support formwork & rebarTransverse joists support formwork & rebar Shear studs and CIP pour produce Shear studs and CIP pour produce

    composite deck systemcomposite deck system

  • 23

    MultipleMultiple--Level Corrosion Level Corrosion Protection SystemsProtection Systems

    Asphalt wearing surf.Asphalt wearing surf.Asphalt protective layerAsphalt protective layerBituminous fabric sheetBituminous fabric sheetEpoxyEpoxy--coating covercoating coverConcrete coverConcrete cover

    Implementation Implementation RecommendationsRecommendations

    Bridge Movement SystemsBridge Movement Systems Superstructure SystemsSuperstructure Systems Deck SystemsDeck Systems Substructure SystemsSubstructure Systems

  • 24

    SPER SystemSPER SystemSSumitomo umitomo PPrecast form for resisting recast form for resisting

    EEarthquakes and for arthquakes and for RRapid construction apid construction

    Segmental Pier SystemSegmental Pier SystemFactoryFactory--manufactured manufactured staystay--inin--place precast place precast concrete panels concrete panels w/CIP concretew/CIP concrete

    Panels serve as both Panels serve as both formwork & structural formwork & structural elements. elements.

    SPERSPER--LP SystemLP System Piers up to ~40 ftPiers up to ~40 ft 50% less construction time (660 ft total ht):50% less construction time (660 ft total ht):

    formwork and curing time savingsformwork and curing time savings

  • 25

    FormworkFormwork

    After Casting After Casting & Formwork Removal& Formwork Removal In StockIn Stock

    Rebar FabricationRebar Fabrication

    SPERSPER--LP FabricationLP Fabrication

    Lifting SegmentLifting Segment

    Placing SegmentPlacing Segment

    SPERSPER--LP LP Construction SequenceConstruction Sequence

    Completed PiersCompleted Piers

  • 26

    Hollow sectionHollow section Two C sections w/ lateral rebarTwo C sections w/ lateral rebar Lateral rebar coupled in fieldLateral rebar coupled in field Ties anchored w/ UTies anchored w/ U--barsbars

    SPERSPER--HPHP SystemSystem Piers up to ~164 ftPiers up to ~164 ft 1/3 less in construction time (328 ft total ht):1/3 less in construction time (328 ft total ht):

    formwork & lateral rebar installationformwork & lateral rebar installationHigh Strength Ti

    LongitudinalPanel Re

    Dowe

    Casting BedCasting Bed FormworkFormwork

    Casting ConcreteCasting Concrete CuringCuring StockStock

    Rebar InstallationRebar Installation

    SPERSPER--HP FabricationHP Fabrication

  • 27

    SPERSPER--HP TransportationHP Transportation

    Arrival at SiteArrival at Site

    Leaving PlantLeaving Plant

    ScaffoldingScaffolding Rebar InstallationRebar Installation

    Coupling of Long. BarsCoupling of Long. Bars Coupled BarsCoupled Bars

    Construction SequenceConstruction Sequence

  • 28

    Construction SequenceConstruction SequencePrePre--Assembling FormsAssembling Forms Erecting Outer Form Erecting Outer Form

    Applying Epoxy JointApplying Epoxy Joint

    Construction SequenceConstruction SequenceForms Between SectionsForms Between Sections

    Casting Between PanelsCasting Between Panels Completed PiersCompleted Piers

    Intermediate HS Tie barsIntermediate HS Tie bars

  • 29

    Current and Future Current and Future ActivitiesActivities

    Disseminate Final ReportDisseminate Final Report Scan Technology Implementation PlanScan Technology Implementation Plan Implementation through Federal Implementation through Federal

    Funding Programs, etc.Funding Programs, etc. Innovative Bridge Research and Innovative Bridge Research and

    Deployment (IBRD)Deployment (IBRD) Highways for LIFEHighways for LIFE Federal BridgeFederal Bridge

    STIPSTIP Identified 10 technologies in four Identified 10 technologies in four

    categories for implementation in U.S. categories for implementation in U.S. STIP includes:STIP includes:

    BackgroundBackground Implementation StrategyImplementation Strategy Scan Team LeadsScan Team Leads DeliverablesDeliverables TimeframeTimeframe Funds RequiredFunds Required

    $85K Request for Development and $85K Request for Development and DisseminationDissemination

  • 30

    STIP EffortsSTIP Efforts Disseminate technology via meetings, Disseminate technology via meetings,

    workshops, articles, and websiteworkshops, articles, and website Solicit Pilot ProjectsSolicit Pilot Projects Obtain further informationObtain further informationdesign basis, design basis,

    drawings, specifications, photosdrawings, specifications, photosfrom hostsfrom hosts Prepare Project Planning Guide and Draft Prepare Project Planning Guide and Draft

    Specifications for use of Specifications for use of SPMTsSPMTs Translate documents, conduct lit searchTranslate documents, conduct lit search Recommend research Recommend research Coordinate with NCHRP and other Coordinate with NCHRP and other

    organizationsorganizations

    Initial DOT EffortsInitial DOT Efforts MNDOTMNDOTPoutrePoutre DalleDalle

    PoutrePoutre DalleDalle--type deck slab for two bridges type deck slab for two bridges under development based on Scanunder development based on Scan

    Interaction with Interaction with PrecastersPrecasters to develop feasible to develop feasible section without overhauling bedssection without overhauling beds

    TxDOTTxDOTSPMTsSPMTs: Bridge Replacements : Bridge Replacements along Ialong I--35 corridor widening through 35 corridor widening through central Texas.central Texas.

    FDOTFDOTSPMTsSPMTs: Rapid Repair of I: Rapid Repair of I--10 after 10 after Hurricane Ivan DamageHurricane Ivan Damage

  • 31

    Hurricane Ivan IHurricane Ivan I--10 10 DamageDamage

    East SideEast Side

    West sideWest side

    II--10 East Side Repair10 East Side Repair Phase 1: 24Phase 1: 24--day contractday contract Shifted 12 spans from East Shifted 12 spans from East

    bound to open West boundbound to open West bound $250K/day incentive/$250K/day incentive/disincdisinc.. Contractor finished 7 days Contractor finished 7 days

    earlyearly$1.75M bonus$1.75M bonus SPMTsSPMTs were instrumental to were instrumental to

    moving 265moving 265--ton spanston spans

  • 32

    Future DirectionsFuture DirectionsWidespread use of accelerated Widespread use of accelerated

    construction (e.g., PBES) for bridges in construction (e.g., PBES) for bridges in urban areasurban areasIn each case, engineering the solution In each case, engineering the solution

    to meet the unique constraints; i.e.,to meet the unique constraints; i.e., Reduced traffic disruptionReduced traffic disruption Improved workImproved work--zone safetyzone safety Reduced environmental impactReduced environmental impact Improved constructabilityImproved constructability Improved qualityImproved quality Lower lifeLower life--cycle costscycle costs

    Future Directions, Future Directions, contcontd.d. More elements combined offMore elements combined off--sitesite More efficient, innovative prefabricated More efficient, innovative prefabricated

    bridge systems using the enhanced bridge systems using the enhanced properties of high performance materialsproperties of high performance materials

    More prefabricated substructuresMore prefabricated substructures More innovative methods of More innovative methods of

    construction; e.g., use of selfconstruction; e.g., use of self--propelled propelled modular transporters (SPMTs), other modular transporters (SPMTs), other total bridge movements.total bridge movements.

  • 33

    Future Directions, Future Directions, contcontd.d.

    Increased focus on durability to extend Increased focus on durability to extend bridge service life to 75 yearsbridge service life to 75 years Rehabilitation of the existing Rehabilitation of the existing

    infrastructure, with more public infrastructure, with more public involvement (CSS solutions)involvement (CSS solutions) More owner, industry, consultant, More owner, industry, consultant,

    academia, public partnerships to find academia, public partnerships to find optimum solutionsoptimum solutions

    A Suggested Role for You

    Insist on consideration of innovativetechnologies to accelerate construction9 Be willing to specify the first use9 Select a large project or multiple projects

    with repetitive sections for the first use9 Use contracting strategies that are

    significant to the contractor9 Include cost trade-offs in project estimate9 Engage all stakeholders for their input,

    from initial planning through construction

  • 34

    Available ResourcesAvailable Resources

    For PBES bridges and contact information For PBES bridges and contact information http://http://www.fhwa.dot.govwww.fhwa.dot.gov/bridge/prefab/ /bridge/prefab/

    For Accelerated Construction Technology Transfer For Accelerated Construction Technology Transfer (ACTT) Workshop information (ACTT) Workshop information http://http://www.fhwa.dot.govwww.fhwa.dot.gov/construction/accelerate/construction/accelerated/ d/

    FHWA technical workshops on innovative FHWA technical workshops on innovative techniquestechniques

    Mark your calendars!

    FHWA National Prefabricated Bridge Elements & Systems Workshop

    December 12-14, 2005San Diego, California

  • 35

    The future is here!:

    Looking for a few champions

    Thank You

    SPMTSuperstructures & Decks

    Substructures