Designated Historic Landmark

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25 Νοε 2013 (πριν από 3 χρόνια και 8 μήνες)

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1

Designated Historic Landmark

Opened to Traffic in 1883

Construction is Scheduled 2009
-
2014

Overnight Construction

Limited Weekend Construction

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)

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

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

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

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

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

Aging Roadway

Promenade

Aging Roadway

Brick Arch

Typical Section Through Arch

Fill

Crown of Arch

Deteriorated

Closure Walls (Typ)

Failed Membrane

System

Approach Roadway Rehabilitation

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)

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

Existing
Steel Beam

Limits of Deck Removal

13

Ramp Structures Rehabilitation

Existing
Steel Beam

Limits of Temporary Bridge
Units

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.

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

Bridge Cross
-
Section

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




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

21

Westbound Detours C & D

Manhattan Bridge

3.0 Miles


Brooklyn Battery Tunnel
7.0 Miles

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.

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.


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

25

Brooklyn Bridge Staging (Night time & Weekends)

26

Brooklyn Bridge Staging (Nighttime & Weekends)

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

28

Community Outreach Program



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


29

Program Elements
:



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

30

Thank You

Q&A