Transcription
Rehabilitation of the CorningCenterway Arch BridgeChristineChi ti SharkeySh kEmily Smith, PE
Presentation Outline¾¾¾¾¾History of Centerway BridgeProject ComponentsIInspectionti ProgramPRepair RecommendationsCConstructionttiPhPhaseCorning
Project LocationCorning
Bridge Street(1937)CenterwayArch Bridge(1922)CorningP i t dPaintedPost HighSchoolBriscoBridge(1987)
CorningPainted PostHigh SchoolBriscoBridgeCenterway ArchBridgeFlooding
1928 Bridge Elevation
Original Construction
Flooding
1972 - Agnes
1989 – Deck Modifications
Centerway as a Pedestrian Bridge3636’
Key Project Partnership
Key Project Components¾¾Bridge RehabilitationMaintain HistoricIntegrity
Centerway Arch Bridge¾¾¾ConstructedCt t d iin 19227 – 92 ft. (clear) spans720 ftft. overall length
Arch Section¾C ti lCast-in-placeearth-filledth fill d reinforcedi fd concretet archh
Preliminary Engineering¾ InIn-depthdepth Bridge Inspection– Define repair scope & quantities to get the most accuratecost estimates¾ Testing– Non-destructive testing: impact echo, GPR, LIDAR,concrete sounding– Concrete coring for chlorides, petrographic analysis,strength¾ Reports–––––Inspection Condition ReportGPR (deck)Concrete Coring and Powder testingPetrographic AnalysisService Life Assessment
Inspection ComponentsParapetsD kDeckSpandrel WallsArchPiers
In-depth Bridge Inspection¾Bestt way toBt defined fi repairi scope & quantitiestiti tto gett thethmost accurate cost estimates
Spandrel Walls
Abutments and Piers
Reflective Markings from Sounding
Assembling of Field Markings
Testing¾¾IImpactt EchoE h (NDT)Concrete Coring & Testing
Alkalai-Silica Reaction (ASR) in Petrograph
GPR on Deck¾D l i tiDelaminations/Voids/V id
Condition Summary¾¾¾ConcreteCt iin AbAbutments,tt Wingwalls,Will anddSSpandreld lWWallsllshow spalling, advanced concrete degradation due tomoisture retention from coatingg appliedppin 1989 due toAlkali-Silica Reaction (ASR).Concrete Arches were not coated, but exhibited advancedASR crackingASR,cracking, and some delaminationdelamination.Complete loss of integrity from ASR. Restoration/overlayis not feasible due to condition.
Recommended Repairs: Piers and Abutments¾¾RehabilitationRh bilit ti att upstream/downstreamt/dtendsd ddue ttospalling/cracking of surface.Repair cracks and perform partial depth concrete repairs;seal surfaces.
Recommended Repairs: Spandrel Walls¾RResurfacefwithith PPrecasttPanels and reinforce toobtain desired design life:minimum 25 years.¾ Provide surface texturingi panelsinl tto evokekhistoric façade.¾ Precast concreteparapets removed andreplaced in-kind. Bumpouts removed andreplaced in-line for newlighting.gg
Recommended Repairs: Arch¾¾StrengtheningStth i recommendedd d tto maintaini t i minimumi i25 yr.life expectancy.Undersides: Repair cracks and perform partial depthconcrete repairs as necessary.
Bridge Design Section
Project Costs¾TOTAL 5,530,021 5 530 021¾Inspection, Investigation and Design: 521,000Inspection 521 000Final Construction Cost: 4,356,021Construction Inspection:p 653,000 ,¾¾
Construction Timeline¾¾¾¾¾Bid AdAdvertisementtit – MayM 3131, 2012Bid Opening – June 28, 2012Award – July 2323, 2012Substantial Completion - August 1, 2013Final Completionp- October 30,, 2013
Construction Access From Approaches
Construction Access From Deck
Construction Access From Scaffolding
Construction Access From Suspended Platforms
Construction Access From Suspended Platforms
Construction Access From Suspended Platforms
Weather Impacts: Hurricane Sandy
Pier Reconstruction
Pier Reconstruction: Match Existing Texturing
Concrete Arch Beam
Arch Reinforcement
Winter Arch Construction
Self-Consolidating Concrete
Vacuum Injection Crack Repairs
Parapet Removal
Spandrel Walls
Prep for Precast Wall Panels
Wall Reinforcement
Precast Panel Fabrication
Precast Panel Placement
Parapet Construction
Membrane, Drainage and Electrical
Completed Bridge Elevation
Deck Treatment
Center Span Maze
Finished Product
Learning Assessment Questions¾¾¾Whatt ttestingWhti methodsth d were usedd tto evaluatel t ththe existingi ticondition of the bridge?What was determined to be the cause of most of thedamage to the structure?What treatment was used to restore the spandrel walls?
Questions
Repair Recommendations Ct tiPhCons truc tion Ph ase Corning. Project Location Corning. Bridge Street (1937) Corning Pitd Centerway Arch Bridge (1922) Painted Post High School Brisco . Arch St th i d d t i t i i i 25Strengthening recommendedto maintain minimum 25 yr. life expectancy. Undersides: Repair cracks and perform partial depth .
