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

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Presentation on theme: "1 Designated Historic Landmark Opened to Traffic in 1883 Construction is Scheduled 2009-2014 Overnight Construction Limited Weekend Construction."— Presentation transcript:

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2 1 Designated Historic Landmark Opened to Traffic in 1883 Construction is Scheduled Overnight Construction Limited Weekend Construction

3 2 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)

4 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)

5 4 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

6 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

7 6 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

8 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)

9 8 Aging Roadway Promenade Aging Roadway Brick Arch Typical Section Through Arch Fill Crown of Arch Deteriorated Closure Walls (Typ) Deteriorated Closure Walls (Typ) Failed Membrane System Approach Roadway Rehabilitation

10 9 Grouting Pocket and Doweling Requirements Dowel Bar (Typ) Precast Concrete Panel Sprayed-On Waterproofing Membrane Distribution Channel Grouting Ports Existing Concrete Fill Fine Fill (Bedding) 3 Thickness Approach Roadway Rehabilitation (Precast)

11 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

12 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

13 12 Ramp Structures Rehabilitation Existing Steel Beam Limits of Deck Removal

14 13 Ramp Structures Rehabilitation Existing Steel Beam Limits of Temporary Bridge Units

15 14 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.

16 15 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

17 16 Limits of Main Span Painting

18 17 Bridge Cross-Section

19 18 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

20 19

21 20 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

22 21 Westbound Detours C & D Manhattan Bridge 3.0 Miles Brooklyn Battery Tunnel 7.0 Miles

23 22 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.

24 23 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.

25 24 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

26 25 Brooklyn Bridge Staging (Night time & Weekends)

27 26 Brooklyn Bridge Staging (Nighttime & Weekends)

28 27 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

29 28 Community Outreach Program Full time, senior community liaison in the field Full time, senior community liaison in the field 24-Hour community hotline 24-Hour community hotline Project Brochure Project Brochure Project page on DOT website Project page on DOT website Media Outreach Media Outreach Radio Announcements Radio Announcements VMS Boards VMS Boards Project Newsletters Project Newsletters Important Notices Important Notices Local Bulletin Boards Local Bulletin Boards

30 29 Program 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 Cabinets Participation on District and Borough Service Cabinets Regular visits to: Regular visits to: Local schoolsLocal schools Medical facilitiesMedical facilities LibrariesLibraries NYCHA facilities NYCHA facilities Door to door visits with businesses in the areas of impact Door to door visits with businesses in the areas of impact

31 30 Thank You Q&A


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