Post on 21-Oct-2020
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
Nassau County Department of Public Works
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
Nassau County Department of Public Works
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
Nassau County Department of Public Works
Permitting
!Coast Guard!Army Corps of Engineers!NYS Department of Environmental
Conservation!NY Department of State – Coastal
Management Program!Environmental Protection Agency
Nassau County Department of Public Works
Bridge Elevation
Nassau County Department of Public Works
Bridge Section
Nassau County Department of Public Works
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
Nassau County Department of Public Works
Cross-over at South Approach(2 lanes maintained each direction)
Nassau County Department of Public Works
Merged Traffic on Southbound Bridge
Nassau County Department of Public Works
Maintenance of Traffic
!Local Street Detours in City of Long Beach at South Approach Intersections
!Additional Pedestrian Cross Walks and Signalization at North Approach
Nassau County Department of Public Works
Maintenance of Traffic
!Marine Traffic (coordinated openings during construction)
Nassau County Department of Public Works
Bridge Opening
Nassau County Department of Public Works
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
Nassau County Department of Public Works
Existing Structural Steel –Bascule Span
Nassau County Department of Public Works
Bascule Leafs - Painting
Nassau County Department of Public Works
Paint Containment / Floor System Replacement
Nassau County Department of Public Works
Shear Lock Repairs
Nassau County Department of Public Works
Deck Repairs
!New Wearing Surface over Bascule Counterweights (Class D Concrete)
!New Approach Span Deck Joints (Strip Seal and HP Concrete)
!Minor Patch Repairs
Nassau County Department of Public Works
Existing Counterweight Wearing Surface and Steel Grid Deck
Nassau County Department of Public Works
New Counterweight Wearing Surface
Nassau County Department of Public Works
Damaged Existing Deck JointsApproach Spans
Nassau County Department of Public Works
Deck Joint Replacement
Nassau County Department of Public Works
New Deck Joint
Nassau County Department of Public Works
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
Nassau County Department of Public Works
Scaffolding / Bearing Replacement
Nassau County Department of Public Works
Jacking of Existing Bearings
Nassau County Department of Public Works
Jacking System
Nassau County Department of Public Works
New Elastomeric Bearings
Nassau County Department of Public Works
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
Nassau County Department of Public Works
Existing Piers
Nassau County Department of Public Works
Granite Facing – Deteriorated Joints
Nassau County Department of Public Works
Underwater View – Concrete Voids
Nassau County Department of Public Works
Underwater View – Deteriorated Masonry Joint
Nassau County Department of Public Works
Fender System Repairs
!Replace Deteriorated Timber Sections and Connection Hardware
!New Handrails
!Replace Deteriorated Dolphin Wrapping
!New Floating Boat Dock (Nassau County Maintenance)
Nassau County Department of Public Works
Deteriorated Dolphin Wrapping
Nassau County Department of Public Works
Retaining / Sea WallRepairs
!Repair Eroded Seawall – Stone Fill and Geotextile Material
!Construct New Soldier Pile Retaining Wall (existing metal crib wall)
Nassau County Department of Public Works
Erosion of Existing Sea Wall
Nassau County Department of Public Works
Damaged Sea WallConstruction of New Retaining Wall
Nassau County Department of Public Works
Replacement of Crib Retaining Wall
Nassau County Department of Public Works
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
Nassau County Department of Public Works
Current Operator’s House Repairs
Nassau County Department of Public Works
Asbestos Removal Completed
Nassau County Department of Public Works
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
Nassau County Department of Public Works
Main Drive Motor and Brakes
Nassau County Department of Public Works
Rack and Pinion
Nassau County Department of Public Works
Main Rack (pitch line alignment)
Nassau County Department of Public Works
Bull Gear and Bearing (liner replaced)
Nassau County Department of Public Works
Air Buffer / Tail Lock Strap
Nassau County Department of Public Works
Air Buffer (check and needle valve replacement)
Nassau County Department of Public Works
Fuel Tank / Generator
!New Generator Fuel System and Tank
!High Fuel Level Alarm / Spill Containment / Venting
!Access Facilities
!Remove Existing Fuel Tank
Nassau County Department of Public Works
Existing Generator Fuel Tank
Nassau County Department of Public Works
Electrical Operating Systems
!New Tail Lock Motors / Brakes / Relays and Limit Switches
!Rehabilitate Leaf Motors
!New Emergency and Motor Thruster Brakes
!Recondition Control Console
Nassau County Department of Public Works
Main Drive Motor
Nassau County Department of Public Works
Main Span Limit Switch
Nassau County Department of Public Works
Existing Operators’ Control Center
Nassau County Department of Public Works
Bridge Lightingand Signals
!New Electric Lights (signal, navigation and interior) / Switches / Receptacles / Wiring and Conduits
!New Traffic Safety Gates
Nassau County Department of Public Works
Bridge Lights / Signals and Gates
Nassau County Department of Public Works
Submarine Cables
!New Channel and Electrical Service Submarine Cables (installed by water jetting)
Nassau County Department of Public Works
Service Channel
Cable Locations
Nassau County Department of Public Works
Existing Submarine Cables
Nassau County Department of Public Works
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
Nassau County Department of Public Works
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
Nassau County Department of Public Works
Acknowledgements
!NYSDOTGene Gaye, Project Manager (Region 10)Anthony DiLapi (Region 10)Byron Alford (Construction)
Nassau County Department of Public Works
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