BASCULE BRIDGE REPAIRS Long Beach Bridge Rehabilitation...Peter Gerbasi, Commissioner John Waltz,...

BASCULE BRIDGE REPAIRSLong Beach Bridge Rehabilitation

October 23, 2003

County of NassauDepartment of Public Works

Nassau County Department of Public Works

Project Summary

!General Rehabilitation Project

!Dual (north- and southbound) Structures

!Estimated Construction Cost: $12.4 Million

!Federal / State and County Funding


Structure Description

!Dual-Leaf Rolling Lift Bascule (122 feet)

!Steel-Beam Approaches (11 spans @ 60 feet each)

!Both Structures - Three Traffic Lanes and Sidewalk

!Bridges Constructed in 1953 / 1954


Project Coordination

!Nassau County Department of Public Works

!New York State Department of Transportation, Region 10

!United States Coast Guard!Utilities!City of Long Beach


Permitting

!Coast Guard!Army Corps of Engineers!NYS Department of Environmental

Conservation!NY Department of State – Coastal

Management Program!Environmental Protection Agency


Bridge Elevation


Bridge Section


Maintenance of Traffic!Two Traffic Stages (one bridge closed /

one bridge remains open)

!Two Lanes of Traffic Each Direction and a Single Sidewalk Accommodated in Each Stage


Cross-over at South Approach(2 lanes maintained each direction)


Merged Traffic on Southbound Bridge


Maintenance of Traffic

!Local Street Detours in City of Long Beach at South Approach Intersections

!Additional Pedestrian Cross Walks and Signalization at North Approach


Maintenance of Traffic

!Marine Traffic (coordinated openings during construction)


Bridge Opening


Superstructure Repairs

! Replacement of Bascule Span Floor Systems and Steel Grid Deck

! Fatigue Retrofit of Welded Floor Beam Cover Plates (new bolted members)

! Clean and Paint Structural Steel! Realign Shear Locks! Strain Gauge Load Balancing System –

Permanent Installation


Existing Structural Steel –Bascule Span


Bascule Leafs - Painting


Paint Containment / Floor System Replacement


Shear Lock Repairs


Deck Repairs

!New Wearing Surface over Bascule Counterweights (Class D Concrete)

!New Approach Span Deck Joints (Strip Seal and HP Concrete)

!Minor Patch Repairs


Existing Counterweight Wearing Surface and Steel Grid Deck


New Counterweight Wearing Surface


Damaged Existing Deck JointsApproach Spans


Deck Joint Replacement


New Deck Joint


Bearing ReplacementSeismic Retrofit

!Work Limited to Approach Spans –Bascule Span and Main Pier Retrofits Considered Too Costly For “Benefit versus Deficiencies”

!Replace Steel Sliding Plate Bearings on Approach Piers and Abutments w/ Elastomeric Bearings – Base Isolation


Scaffolding / Bearing Replacement


Jacking of Existing Bearings


Jacking System


New Elastomeric Bearings


Substructure Repairs

!Minor Patching of Existing Piers

!Re-Pointing of Granite Masonry

!Underwater Repairs – Re-Pointing / Spall and Void Repairs – No Need for Cofferdams and Minor Environmental Concerns


Existing Piers


Granite Facing – Deteriorated Joints


Underwater View – Concrete Voids


Underwater View – Deteriorated Masonry Joint


Fender System Repairs

!Replace Deteriorated Timber Sections and Connection Hardware

!New Handrails

!Replace Deteriorated Dolphin Wrapping

!New Floating Boat Dock (Nassau County Maintenance)


Deteriorated Dolphin Wrapping


Retaining / Sea WallRepairs

!Repair Eroded Seawall – Stone Fill and Geotextile Material

!Construct New Soldier Pile Retaining Wall (existing metal crib wall)


Erosion of Existing Sea Wall


Damaged Sea WallConstruction of New Retaining Wall


Replacement of Crib Retaining Wall


Operators’ House Repairs

! Repair Water Damage (interior surfaces)

! New Insulated Windows and Doors

! New Heating / Cooling Systems

! New Washroom and Kitchen Facilities

! Improved Space for Work Areas

! Asbestos Mitigation

! Exterior Waterproofing and Roof Repairs


Current Operator’s House Repairs


Asbestos Removal Completed


Mechanical Operating Systems

! Rehabilitation of Drive and Locking Machinery

! New Motor and Machinery Brakes

! Rack Re-alignment / Shimming

! New Bronze Bearing Liners – Main Shafts

! Rehabilitate Air Buffers

! Rehabilitate Live Load Shoes


Main Drive Motor and Brakes


Rack and Pinion


Main Rack (pitch line alignment)


Bull Gear and Bearing (liner replaced)


Air Buffer / Tail Lock Strap


Air Buffer (check and needle valve replacement)


Fuel Tank / Generator

!New Generator Fuel System and Tank

!High Fuel Level Alarm / Spill Containment / Venting

!Access Facilities

!Remove Existing Fuel Tank


Existing Generator Fuel Tank


Electrical Operating Systems

!New Tail Lock Motors / Brakes / Relays and Limit Switches

!Rehabilitate Leaf Motors

!New Emergency and Motor Thruster Brakes

!Recondition Control Console


Main Drive Motor


Main Span Limit Switch


Existing Operators’ Control Center


Bridge Lightingand Signals

!New Electric Lights (signal, navigation and interior) / Switches / Receptacles / Wiring and Conduits

!New Traffic Safety Gates


Bridge Lights / Signals and Gates


Submarine Cables

!New Channel and Electrical Service Submarine Cables (installed by water jetting)


Service Channel

Cable Locations


Existing Submarine Cables


Project Credits

!Owner: County of Nassau, New York!Engineer: URS Corporation!Design Coordination: NYSDOT

Region 10!Construction Management: NYSDOT

Region 10!General Contractor: J. D. Posillico


Acknowledgements!Nassau County Department of Public

Works

Peter Gerbasi, CommissionerJohn Waltz, Commissioner (retired)Donna Boyle, Project ManagerMike Russo, Project Manager (retired)Joe Corr, Bridge Maintenance SupervisorMike Scanlan, Bridge Maintenance


Acknowledgements

!NYSDOTGene Gaye, Project Manager (Region 10)Anthony DiLapi (Region 10)Byron Alford (Construction)


Questions and Answers

Project SummaryStructure DescriptionProject CoordinationPermittingMaintenance of TrafficMaintenance of TrafficMaintenance of TrafficSuperstructure RepairsDeck RepairsBearing ReplacementSeismic RetrofitSubstructure RepairsFender System RepairsRetaining / Sea Wall RepairsOperators’ House RepairsMechanical Operating SystemsFuel Tank / GeneratorElectrical Operating SystemsBridge Lightingand SignalsSubmarine CablesProject CreditsAcknowledgementsAcknowledgementsQuestions and Answers

BASCULE BRIDGE REPAIRS Long Beach Bridge Rehabilitation...Peter Gerbasi, Commissioner John Waltz,...

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