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Brooklyn Bridge Restoration Project - Contract 6

Historic landmark opened in 1883 is undergoing restoration from 2009-2014. Project scope includes bridge deck replacement, ramp and approach rehabilitation, seismic retrofitting, and painting. Limited overnight and weekend construction.

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Brooklyn Bridge Restoration Project - Contract 6

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  1. Designated Historic Landmark Opened to Traffic in 1883 Construction is Scheduled 2009-2014 Overnight Construction Limited Weekend Construction

  2. Main Street (South View) York Street (South View) Washington Street (South View) Prospect Street (South View) Sands Street (South View) Arch Blocks (South View) Brooklyn Approach

  3. 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)

  4. Project Scope – Contract 6 • 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.

  5. 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

  6. Project Scope Continued 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.

  7. 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)

  8. Approach Roadway Rehabilitation Failed Membrane System Aging Roadway Aging Roadway Promenade Fill Brick Arch Crown of Arch Deteriorated Closure Walls (Typ) Typical Section Through Arch

  9. Approach Roadway Rehabilitation (Precast) Grouting Pocket and Doweling Requirements Grouting Ports Dowel Bar (Typ) Distribution Channel Fine Fill (Bedding) 3” Thickness Sprayed-On Waterproofing Membrane Existing Concrete Fill Precast Concrete Panel

  10. 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 Rehabilitation

  11. 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

  12. Ramp Structures Rehabilitation Limits of Deck Removal Existing Steel Beam

  13. Ramp Structures Rehabilitation Limits of Temporary Bridge Units Existing Steel Beam

  14. Main Span – Seismic Retrofitting • Install Slide Bars In Distribution Truss • Bottom Chords At Bridge Expansion Joints • Install Lateral Bracing Between PP 115 and 122 • Reconfigure Floorbeam Diagonals At PP 116 Thru 121. • Replace Bottom Chord Bearing Beams At PP 122. • Replace Bottom Chords Between PP 121 And 122.

  15. Franklin Square – Seismic Retrofitting • Install clamping devices on eye bar members. • Install new lower lateral bracing diagonals. • Replace sway bracings. • Install arch column bracing. • Install new seismic shoes.

  16. Bridge Cross-Section

  17. 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

  18. 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

  19. Westbound Detours C & D Manhattan Bridge 3.0 Miles Brooklyn Battery Tunnel 7.0 Miles

  20. 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.

  21. 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.

  22. 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

  23. Brooklyn Bridge Staging (Night time & Weekends)

  24. Brooklyn Bridge Staging (Nighttime & Weekends)

  25. 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

  26. Full time, senior community liaison in the field 24-Hour community hotline Project Brochure Project page on DOT website Media Outreach Radio Announcements VMS Boards Project Newsletters Important Notices Local Bulletin Boards Community Outreach Program

  27. Full time senior level Community Liaison: Presentations to: Elected officials Community Boards Business Improvement Districts Civic, community, merchant, tenant groups Participation on District and Borough Service Cabinets Regular visits to: Local schools Medical facilities Libraries NYCHA facilities Door to door visits with businesses in the areas of impact Program Elements:

  28. Q&A Thank You

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