No 7 Secaucus Extension Final Report - NYCEDC

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No. 7 Secaucus ExtensionFeasibility Analysis Final ReportGrand CentralAt Grand Central, six VCEs were studied – West End Core, Transfer Underpass, Center EscalatorCore, 3 rd Avenue Core, Southbound Lexington Lines to the No. 7 Transfer Passageway andNorthbound Lexington Lines to Flushing Transfer Passageway. Each VCE has a peak 15-minutelevel of service of B, C or C/D, and the current VCEs are considered adequate for the currentpassenger flows.The No-Build scenario would cause failures (LOS E or F) at the Transfer Underpass, 3 rd AvenueCore and South or Northbound Transfer Passageway (depending on the AM or PM peak, seeTable 3). To accommodate the No-Build condition, NYCT would recommend modifications tothe west end escalators and the east end stairways. The two existing West End escalators that goup one level and switch back to reach the mezzanine would be removed and replaced withfour escalators that would land at a new lower mezzanine and stairs to bring people from thelower to upper mezzanine. The existing stairs at the east end of the platform would also bewidened.Table 3:Grand Central Pedestrian VCE AnalysisFlushing to SecaucusGrand Central - 42 StLevel of ServiceA B C D E F2011 Baseline Conditions 2035 No-Build 2035 No-Build 2035 Build 2035 Build 2035 BuildWith West & EastWith West & East West, East & New Core7 to Times Square 7 to Hudson Yards 7 to Hudson Yards 7 to Secaucus 7 to Secaucus 7 to SecaucusWest End Core EscalatorsE207, E209 E207, E209 E207, E209 + two new (24") escE207, E209 2 new (24") escalators 2 new (24") escalatorsONS OFFS ONS OFFSV/C LOS C V/C LOS C V/C LOS C V/C LOS D V/C LOS C D V/C LOS C DLexington Transfer UnderpassPL1AB PL1AB PL1AB PL1AB PL1ABLOS D LOS F LOS D LOS F LOS F LOS DCenter Escalator CorePL4AB PL4AB PL4AB PL4AB PL4ABLOS C/D LOS D LOS D LOS F LOS F LOS DR241A: 3rd AvenuePL8-9 PL8-9 PL8/9 widened to 14' PL8-9 PL8/9 widened to 14' PL8/9 widened to 14'LOS D E LOS C/D LOS E LOS C LOS CSB Lexington Platform to FlushingLOS C LOS E LOS C LOS F LOS E LOS CNB Lexington Platform to FlushingU-stairs U-stairs U-stairs U-stairs U-stairs U-stairsLOS B LOS D LOS B/C LOS D LOS C LOS B/CNEW Center Escalator Core2 new 7' splayed stairs, new core toLOSDSource: MTA NYCT Operations Planning, 2011In order to carry additional volumes with the No. 7 Secaucus Extension, a new VCE core isproposed with new passageways providing street access via both the Chrysler Building andMobil Passageway (see Figure 5). By adding new street access, some people who currently usetransfer passages to reach the street level would be rerouted, freeing capacity for additionaltransfers while increasing overall capacity for street access.If no improvements are implemented to serve customers under the 2035 No-Build condition, theBuild scenario would exacerbate congestion that would already exist. The Transfer Underpass,Center Escalator Core, 3 rd Avenue Core, and Southbound Lexington Lines to the No. 7 TransferPassageway and Northbound Lexington Lines to the No. 7 Transfer Passageway would all fall toLOS F for one or both of the peak periods. However, even with the improvements proposed toalleviate pressure caused during the No-Build, the Transfer Underpass, Center Escalator Core,14
No. 7 Secaucus ExtensionFeasibility Analysis Final Reportand Southbound Lexington Lines to the No. 7 Transfer Passageway and Northbound LexingtonLines to the No. 7 Transfer Passageway would fall to either LOS E or F for at least one of the peakperiods without further improvements.5 th Avenue/Bryant ParkAs platform stairs at the 5 th Avenue/Bryant Park station generally have available capacity,analysis at this station focused on the 6 th Avenue Passageway (see Table 4). It has a current LOSof B, and with the additional 2035 No-Build volumes, it would function at LOS D, which would notrequire improvements. However, the No. 7 Secaucus Extension would bring the LOS down to Ewithout improvements. NYCT would propose reopening a passageway to the north side of 42 ndStreet to offset this condition (see Figure 6).Table 4:5 th Avenue/Bryant Park Pedestrian VCE AnalysisFlushing to SecaucusLevel of ServiceA B C D2011 Baseline Conditions 2035 No-Build 2035 Build 2035 Build: With 42 St North7 to Times Square 7 to Hudson Yards 7 to Secaucus 7 to Secaucus5th Avenue6th Avenue Passageway 6th Avenue Passageway 6th Avenue Passageway 6th Avenue PassagewayOpen 42 St N PassagewayTotal 9.4 Total 17.1 Total 21.7 Total 18.1LOS B LOS D LOS E LOS DSource: MTA NYCT Operations Planning, 2011Times SquareFive circulation elements were studied at Times Square – the 8 th Avenue Passageway, the threeescalators from the No. 7 to the BMT, the three stairs from the No. 7 to the mezzanine and thestairs from the mezzanine to the uptown and downtown platforms of the 7 th Avenue Line.Currently, these have LOS A, B or C (see Table 5).The 2035 No-Build scenario would cause the No. 7 stairs to the mezzanine and the mezzaninestairs to the 7 th Avenue uptown and downtown platforms to fall to level of service E or F. Toimprove these conditions, NYCT would recommend two new 8-foot stairwells nested under theexisting 7 th Avenue stairs from both the northbound and southbound platforms to increasecapacity to the mezzanine. They also would propose removing the existing escalator from theNo. 7 platform to the BMT and replacing it with three new 10-foot-wide stair wells. These twoimprovements will increase the level of service on all circulation elements to LOS C or D.As with Grand Central, if no improvements were put in place to remedy the increases that wouldoccur with the No-Build period, the No. 7 Secaucus Extension would cause LOS to furtherdegrade as compared to the unimproved No-Build scenario. However, even if the No-Buildcondition is improved as described above, the No. 7 Secaucus Extension would cause thetransfer from the No. 7 to the BMT to degrade to LOS E without further improvements.In order to accommodate the additional volumes associated with the No. 7 Secaucus Extension,NYCT would propose adding a new lower mezzanine escalator core, which would add oneescalator between the lower mezzanine and the upper mezzanine at the corner of 41 st Street15
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No 7 Secaucus Extension Final Report - NYCEDC

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