Second Avenue Subway Past, Present & Future

Transcription

1 Second Avenue Subway Past, Present & Future 1948 Board of Transportation Plan 0

2 Second Avenue Subway Brief History Second Avenue Elevated opened 1880, closed 1942 A new subway along Second Avenue under consideration since the 1920s 1929 Plan Bronx to Water Street in Lower Manhattan 6 tracks north of 61st Street 4 tracks between Chambers Street and 61 st Street 2 tracks south of Chambers Street 1

3 Second Avenue Subway Brief History 1948 Plan Lower Manhattan portion of proposed line south of Chrystie Street eliminated, but with track connections to Nassau Street Line, 6 th Avenue Line, Williamsburg Bridge and Manhattan Bridge 1968 Plan 2-track line from Bronx to Water Street, with links via 63 rd Street to Queens and Broadway 1970s Construction 3 sections built before work was suspended due to fiscal crisis Second Avenue, 110 th 120 th Streets Second Avenue, 99 th 105 th Streets Manhattan Bridge area 2

4 Planning Process Project Goals Reduce overcrowding and delays on existing transit system (especially the Lexington Ave subway line) Improve accessibility to transit for residents on the far East Side of Manhattan Study Area 3

5 Planning Process Preliminary Long List New Subway Lines Short List evaluated in MESA DEIS SDEIS Alternatives List 2nd Ave Subway from 125th St - 63rd St 2nd Ave Subway from 125th St - 63rd St combined with Lower East Side Light Rail Full-Length 2nd Ave Subway Public Hearing 1999 Call for Full-Length SAS May 2000 $1.05 billion in Capital Plan for Full-Length SAS April 2001 Start of SDEIS Mid-2004 Completion of FEIS and Record of Decision 4

6 Full-Length Second Avenue Subway Issues 125 St transfer to 456 and Metro-North Evaluation of additional station at 116 St 3-track vs. 2-track station at 72 St Track connections to 63 St line Transfer to L Transfer to F Potential transfer to EM Potential transfer to 7 and Grand Central Evaluation of Water St & Nassau St subway line options 5

7 Second Avenue Subway Alignment & Phasing Plan Full-Length Second Avenue Subway 8.5 route miles 16 new stations 1 renovated station with new entrances (Lexington Av-63 St) 2 services: Linked to existing line Transfers to other rail lines Phase 1 Phase 2 Lexington Ave / 63 rd St Station (Existing) Phase 3 Phase 4 6

8 Phase 1 Scope 1 of Work Scope: Tunnels from 92 nd St to 63 rd St New stations at 96 th St, 86 th St, and 72 nd St 63 rd St subway connection Track & systems from 105 th St to 63 rd St Service between 96 th St & Brooklyn via Broadway Line (Q) Lexington Ave / 63 rd St Station (Existing) 72 nd Street Station Existing Tunnel 96 th Street Station 86 th Street Station Benefits: Relieves overcrowded Lexington Av line Connects to existing system (storage and maintenance) Early use of tunnel section built in 1970 s 7

9 Phase 1 Alignment 1 (Existing) Lexington Av/ 63rd St Station 72nd St Station 86th St Station 96th St Station Cut-and-cover station Mined stations Cut-and-cover tunnels Existing tunnels 8

10 Station Design Longitudinal Section 86 th Street Station 83 rd Street 84th Street 85th Street 86th Street 85 Platform & mezzanine Ancillary Facilities Deep stations require escalators Deep mezzanines reduce cut and cover Escalator runs extend station reach (catchment area) Elevators provided 9

11 Station Design Platform Plan 86 th Street Station 83 rd Street 84 th Street 85 th Street 86 th Street NORTH Platform Entrance Ancillary Facilities Elevator 10

12 Station Design Cross Section of Public Area

13 Station Entrances Goals Meet alignment constraints Match ridership requirements Integrate with surface transport Provide relatively even spacing between station entrances Types of Entrances Plaza Off-Street (building) Sidewalk 12

14 Station Entrances Plaza 13

15 Station Entrances Off Off-Street 14

16 Station Entrances Sidewalk 15

17 Phase 1 Construction Contracts Contracts Tunneling CONTRACTS DURATION (MONTHS) C1 TBM Launch Box, Tunneling from 92nd St. to 63rd St & shafts at 69th & 72nd Streets 51 96th Street Station: C2A 96th - Site Work & Heavy Civil 43 C2B 96th - Station Shell Concrete, Backfill, Perm. Utilities & Street Restoration, MEP & Finishes 45 63rd Street Station C3 63rd Street Station Upgrade 30 72nd Street Station C4A/4B 72nd - Existing Building Demolition, Station Cavern Mine/ Line, G3 & G4 Mine/ Line & Heavy Civil 41 C4C 72nd - Station, Ancillaries, Entrances Concrete work, Finishes (Arch., MEP) & Street Restoration 31 86th Street Station C5A 86th - Open Cuts & Utilities Relocation 19 C5B 86th - Mining & Lining 38 C5C Systems 86th - Station, Entrances, Ancillaries Concrete work, Finishes (Arch., MEP) & Street Restoration 27 C6 SYSTEM 67 NYCT Pre-Revenue Operation Test 4 REVENUE SERVICE / PHASE I COMPLETION 16

18 Phase 1 Construction Tunneling 69 th Street 72 ND Street THIRD AVENUE 92 ND Street 95 th Street SECOND AVENUE TBM LAUNCH BOX Shaft Site Shaft Site Not to scale FIRST AVENUE 17 TBM Tunneling 92 nd Street TBM Launch Box Shaft Sites Mined Tunnel

19 Phase 1 Construction TBM Launch Box 18

20 Phase 1 Construction: TBM Launch Box 19

21 Phase 1 Construction Cut Cut-and-Cover Utility Relocation Street Decking Partial Full 20

22 Second Avenue Subway Full-Build 21