1 Designated Historic Landmark Opened to Traffic in 1883 Construction is Scheduled 2009-2014...
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Transcript of 1 Designated Historic Landmark Opened to Traffic in 1883 Construction is Scheduled 2009-2014...
11
Designated Historic Landmark
Opened to Traffic in 1883
Construction is Scheduled 2009-2014
Overnight Construction
Limited Weekend Construction
22
Brooklyn Approach
York Street (South View)
Main Street (South View)
Washington Street (South View)
Arch Blocks
(South View)
Sands Street (South View)Prospect Street
(South View)
33
Brooklyn Bridge Contract 6 - Project Challenges
• Replace waterproofing membrane under the approach roadway pavement
• Replace reinforced concrete decks (bridges)
• Correct deterioration of steel framing (bridges)
• Improve earthquake resistance
• Maintain traffic – no 24/7 closures
• Increase capacity of SB FDR exit ramp (widen ramp A)
• Meter traffic flow of NB FDR exit ramp
• Improve traffic flow at merge with main approach
• Widen road F (Brooklyn side)
44
Replace bridge deck. Ramps and approaches:
• Arch blocks A to G Manhattan.
• Arch blocks I to III Brooklyn
• Ramps A B C F G H and I Manhattan
• New pre-cast slab over arches
• Steel grid deck filled with concrete on the ramps
• Orthotropic deck for the Franklin square structure.
Project Scope – Contract 6
55
Complete replacement of superstructures for:
York street and main street structures- Brooklyn
Reconfiguration (widening) of ramp A at gore areas between: ramps A and C; ramps A and B; ramps A and G
Replacement of existing bearings with elastomeric bearings for all ramp and approach structures to meet current seismic requirements.
Repair or re-pointing of stone masonry structures.
Additional rehabilitation measures at both anchorages for seismic retrofitting the existing trusses.
Painting of the entire bridge
Provide maintenance and protection of traffic for all stages of construction.
Project Scope
Continued
66
Installation of new steel barriers and rehabilitation of existing historical barriers.
Replacement of expansion joints.
Installation of new drainage system.
Installation of new water proofing membrane.
Strengthening or replacement of deficient members.
Project Scope
Continued
77
Precast construction
• Precast panels will be placed overnight or weekend operations
• Waterproofing membrane field installed
100,000 sf of pavement
Repair voids (concrete fill)
Approach roadway reconstruction (masonry arches)
88
Aging Roadway
Promenade
Aging Roadway
Brick ArchBrick Arch
Typical Section Through Arch
FillFill
Crown of ArchCrown of ArchDeteriorated Closure Walls (Typ)Deteriorated Closure Walls (Typ)
Failed Membrane
System
Approach Roadway Rehabilitation
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Grouting Pocket and Doweling Requirements
Dowel Bar(Typ)
Precast Concrete Panel
Sprayed-On
Waterproofing
Membrane
DistributionChannel
GroutingPorts
Existing Concrete FillFine Fill (Bedding)
3” Thickness
Approach Roadway Rehabilitation (Precast)
1010
• Night time/weekend construction
• Bearing replacement – Elastomeric bearings
• Steel strengthening upgrade to H20 capacity
Park Row – strengthen existing framing + grid filled deck system
Franklin Square – New floor beams + Orthotropic deck
Main and York Street – New steel girders + grid filled deck system
Prospect, Washington, Sand Street - Strengthen existing framing + grid filled deck system
Approach Structures RehabilitationApproach Structures Rehabilitation
1111
• Night time construction
• Superstructure: precast grid filled deck system
• Gore area widening of ramps A & C, A & B and A & G
• Bearing replacement – elastomeric bearings
• Steel strengthening upgrade to H20 capacity
• Painting will follow rehabilitation
• Road F (Brooklyn approach) widening
Ramp Structures Rehabilitation
1212
Ramp Structures RehabilitationRamp Structures Rehabilitation
Existing Steel Beam
Limits of Deck Removal
1313
Ramp Structures Rehabilitation
Existing Steel Beam
Limits of Temporary Bridge Units
1414
• Install Lateral Bracing Between PP 115 and 122• Reconfigure Floorbeam Diagonals At PP 116 Thru 121.
Main Span – Seismic Retrofitting
• Install Slide Bars In Distribution Truss
• Bottom Chords At Bridge Expansion Joints
• Replace Bottom Chord Bearing Beams At PP 122.• Replace Bottom Chords Between PP 121 And 122.
1515
Install clamping devices on eye bar members.
Install new lower lateral bracing diagonals.
Replace sway bracings.
Install arch column bracing.
Install new seismic shoes.
Franklin Square – Seismic Retrofitting
1717
Bridge Cross-SectionBridge Cross-Section
1818
All three travel lanes will be maintained (peak hours)
Minimum four crews are expected (1.5 year)
Equipment will be placed on barges (Manhattan side)
Equipment on land and barges (Brooklyn side)
Dust collector ~ 30,000 lbs ea. (2 needed)
Compressor ~ 20,000 lbs ea. (4 needed)
Vacuum/recycle units ~ 120,000 lbs. (2 needed)
Main Span Painting Staging / Equipment
2020
Temporarily close Brooklyn bridge west bound weekends and overnight traffic
Maintain Brooklyn bridge east bound weekends and overnight traffic
Divert Brooklyn bridge west bound weekend and overnight traffic to Manhattan bridge
Implement disincentive and incentives clauses (user cost based)
Maintenance & Protection of Traffic
2121
Westbound Detours C & D
Manhattan Bridge 3.0 Miles
Brooklyn Battery Tunnel 7.0 Miles
2222
Night time Full Closures (One Direction)
Closure Hours
West & Eastbound Lanes
Sunday Night to Friday 11:00 P.M. to 6:00 A.M.
Saturday 12:01 A.M. to 7:00 A.M.
Sunday 12:01 A.M. to 9:00 A.M.
2323
Closure Hours
Daytime Single Lane Closures
Westbound
Weekdays None
Saturday None
Sunday 6:00 A.M. to 12:00 Noon
Eastbound
Weekdays 7:00 A.M. to 3:00 P.M.
Saturday 2:00 A.M. to 2:00 P.M.
Sunday 2:00 A.M. to 2:00 P.M.
2424
Weekend Full Closures
Westbound
•Saturday 12:00 A.M. through Monday 5:00 A.M. = 53 hours
•Eastbound
•Saturday 1:00 A.M. through Monday 6:00 A.M. = 53 hours
Total number 24 (12 EB and 12 WB)
Closure Hours
2525
Brooklyn Bridge Staging (Night time & Weekends)
2626
Brooklyn Bridge Staging (Nighttime & Weekends)
2727
Incentive & Disincentive Clauses
Disincentives
Penalty Cost = $1000 per minute
Incentives
Will be Established Based on Attainment of Milestones
Reduction in Number of Weekend Closures
User Cost Studies
2828
Community Outreach ProgramCommunity Outreach Program
Full time, senior community liaison in the fieldFull time, senior community liaison in the field 24-Hour community hotline24-Hour community hotline Project BrochureProject Brochure Project page on DOT websiteProject page on DOT website Media OutreachMedia Outreach Radio AnnouncementsRadio Announcements VMS BoardsVMS Boards Project NewslettersProject Newsletters Important NoticesImportant Notices Local Bulletin BoardsLocal Bulletin Boards
2929
Program ElementsProgram Elements::
Full time senior level Community Liaison:Full time senior level Community Liaison: Presentations to:Presentations to:
• Elected officialsElected officials• Community BoardsCommunity Boards• Business Improvement DistrictsBusiness Improvement Districts• Civic, community, merchant, tenant groupsCivic, community, merchant, tenant groups
Participation on District and Borough Service CabinetsParticipation on District and Borough Service Cabinets Regular visits to: Regular visits to:
• Local schools Local schools • Medical facilitiesMedical facilities• LibrariesLibraries
NYCHA facilitiesNYCHA facilities Door to door visits with businesses in the areas of impactDoor to door visits with businesses in the areas of impact
3030
Thank YouThank You
Q&AQ&A