1 Rehabilitation of 188 th Street over Grand Central Parkway PIN: X Contract #: D Deck Replacement October 2015

2 188 th Street Bridge over Grand Central Parkway Elevation (Looking West) Top of Bridge (Looking North)

3 Existing Bridge Cross-Section - (Looking North) Built in ’ wide x 193’ long 4 simple spans 12 steel girders 2 lanes in each direction ’ wide sidewalks Has two (2) watermains under the southbound sidewalk Carries multiple electrical and telephone conduits Project Goal: Replace the deteriorated concrete deck with a new deck which will extend the useful life of the structure for 30+ years

4 Accelerated Bridge Deck Construction Pre-Cast Deck Panel  The accelerated bridge deck construction uses pre-cast deck panels (cast off site) which are placed on the bridge over four weekends during the summer, when traffic on the bridge is reduced.  One sidewalk will be open to pedestrians at all times.

5 Accelerated Bridge Deck Construction (Stage 1) 3 MONTH DURATION WORK ZONE 188 TH STREET SIDEWALK OPEN 2 LANES NORTHBOUND 2 LANES SOUTHBOUND SIDEWALK CLOSED  Work will include bearing replacement, substructure repairs, steel repairs and Verizon utility repairs as well as the installation of the East sidewalk panels.  The west sidewalk will remain open to pedestrians.  All four (4) lanes will remain open to traffic. Temporary off-peak lane closures.

6  Work will include replacement and installation of roadway deck panels in the Northbound direction.  The West sidewalk will remain open and traffic will be reduced to one lay in each direction during the two weekend closure periods. Lane reduction hours are from Friday 10 PM thru Monday 5 AM.  All four lanes of traffic will be open between weekend closures.  Traffic Enforcement Agents will be present from 9 PM Friday thru 6 AM Monday for the weekend closures. WORK ZONE WEEKENDS #1 and #2 Accelerated Bridge Deck Construction (Stages 2 & 3) 188 TH STREET 1 LANE SOUTHBOUND 1 LANE NORTHBOUND SIDEWALK CLOSED SIDEWALK OPEN 3A 2A

7  Work will include replacement and installation of roadway deck panels in the Southbound direction.  The west sidewalk will remain open and traffic will be reduced to one lay in each direction during the two weekend closure periods. Lane reduction hours are from Friday 10 PM thru Monday 5 AM.  All four lanes of traffic will be open between weekend closures.  Traffic Enforcement Agents will be present from 9 PM Friday thru 6 AM Monday for the weekend closures. WEEKENDS #3 and #4 Accelerated Bridge Deck Construction (Stages 4 & 5) WORK ZONE 188 TH STREET 1 LANE SOUTHBOUND 1 LANE NORTHBOUND SIDEWALK CLOSED SIDEWALK OPEN 4A 5A

8 Accelerated Bridge Deck Construction (Stage 6) 188 TH STREET 2 LANES NORTHBOUND 2 LANES SOUTHBOUND SIDEWALK CLOSED SIDEWALK OPEN  Work will include replacement of the West sidewalk and water main.  The east sidewalk will remain open during this stage.  All four (4) lanes will remain open to traffic. Temporary off-peak lane closures.  Traffic Enforcement Agents will be present from Monday to Friday (daytime). WORK ZONE 3 MONTH DURATION

9 Accelerated Bridge Deck Construction 8 Months: Preliminary Work Work performed on underside of bridge Lane closures only on Grand Central Parkway 3 Months: Stage 1 Northbound sidewalk closure on 188 th St. No reduction of traffic lanes during peak hours. Temporary off-peak lane closures. Southbound sidewalk remains open 4 Weekends of Lane Reductions over 2 Summer Months: Stages Two lanes and one sidewalk closure on 188 th Street each weekend for 4 weekends One lane in each direction will be maintained during weekend closures Alternate routes will be in place with use of traffic enforcement agents to facilitate traffic flow 3 Months: Stage 6 Southbound sidewalk closure on 188 th St. Replace watermains beneath bridge under Southbound sidewalk Northbound sidewalk remains open No reduction of traffic lanes during peak hours. Temporary off-peak lane closures. 2 Months: Miscellaneous Work Miscellaneous items – lighting, striping, painting during off peak closures Site restoration TOTAL DURATION FOR DECK REPLACEMENT: 2 MONTHS TOTAL DURATION OF 188 TH STREET TRAFFIC IMPACTS: 4 WEEKENDS

10 Accelerated Bridge Deck Construction Summary Total duration for roadway deck replacement: 2 months Total duration for 188 th Street traffic impacts: 4 summer weekends Overall construction duration reduction of 6-7 months over conventional construction Lane closures on 4 summer weekends – Two lanes in each direction will be reduced to one lane in each direction – Alternate routes will be in place with the use of traffic enforcement agents to facilitate traffic control – Weekdays between weekend closures all lanes and sidewalks will be opened 20% additional construction cost over conventional cost Minimum of one sidewalk on the bridge open at all times

11 Current Schedule Construction Contract Letting: October 2015 Construction Contract Award: December 2015 Construction Completion April 2017 Contact Information: New York State Department of Transportation Mr. James Romanovsky, P.E. (718)