Grade	  Separa)on	  and	  Rail	  Alignments	  
Benefits	  of	  Grade	  Separa0on	   •    Improve	  safety	   •    Enable	  higher	  train	  speeds	   •    Minimize	  dela...
Mission	  Bay	  Street	  Under	  Tracks	                                Source:	  CaHSRA	  
16th	  Street	  Under	  Tracks	                                                            Kaiser	                        ...
16th	  Street	  Under	  Tracks	  DaggeQ	  Place	                                            Kaiser	  MOB	  site	          ...
7th	  Street	  Underpass,	  Oakland	   •  Inhospitable	  pedestrian	  realm	   •  Exacerbates	  barrier	  between	  neighb...
Preferred	  design	  would	  depress	  tracks	  under	  street	  	                             –	  like	  a	  subway	    •...
Alterna0ve	  Rail	  	      Alignments	  Considered	  West	  Route	  •  Conflicts	  with	  Moscone	  &	  SFMOMA	  •  No	  Mi...
Constraints	  on	  Poten0al	  Rail	                    Alignments	  1.    Connect	  to	  DTX	  at	  4th/Townsend	  Sta0on?...
Op0on	  1:	  	  Trench	  in	  between	  freeway	  pilings	  •  Simplest	  op0on	  •  May	  not	  be	  physically	  or	  st...
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Gillian Gillett 01-10-12 SPUR

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Gillian Gillett 01-10-12 SPUR

  1. 1. Grade  Separa)on  and  Rail  Alignments  
  2. 2. Benefits  of  Grade  Separa0on   •  Improve  safety   •  Enable  higher  train  speeds   •  Minimize  delay  to  16th  Street  Bus  Rapid  Transit   •  Incompa0ble  train  and  bus  overhead  wire  systems   •  Minimize  traffic  delay  and  queuing   •  Prevent  neighborhood  traffic  diversion   •  Eliminate  train  horn  noise  To  create  grade  separa0on,  either  the  streets  or   the  tracks  need  to  be  depressed  
  3. 3. Mission  Bay  Street  Under  Tracks   Source:  CaHSRA  
  4. 4. 16th  Street  Under  Tracks   Kaiser   MOB  site   DaggeQ  Place   Development  (400   residen0al  units,  46K   office)   Source:  CaHSRA  
  5. 5. 16th  Street  Under  Tracks  DaggeQ  Place   Kaiser  MOB  site   Source:  CaHSRA  
  6. 6. 7th  Street  Underpass,  Oakland   •  Inhospitable  pedestrian  realm   •  Exacerbates  barrier  between  neighborhoods   •  Inhibits  access  to  adjacent  land  uses  
  7. 7. Preferred  design  would  depress  tracks  under  street     –  like  a  subway   •  Reconnect  neighborhoods   •  Improve  aesthe0cs   •  Reduce  noise   •  Enable  access  to  adjacent  land  uses  Underground  tracks  enable  poten0ally  straighter  or  shorter   route  than  exis0ng  alignment  
  8. 8. Alterna0ve  Rail     Alignments  Considered  West  Route  •  Conflicts  with  Moscone  &  SFMOMA  •  No  Mission  Bay  sta0on  (except  spur)  DTX  Route  •  Retain  0ght  curve  at  7th/Townsend  •  Mission  Bay  sta0on  remains  East  Route  •  Poten0al  conflicts  with  Mission  Bay   building  pilings  •  Relocated  Mission  Bay  sta0on  to  east   Source:    SFCTA  
  9. 9. Constraints  on  Poten0al  Rail   Alignments  1.  Connect  to  DTX  at  4th/Townsend  Sta0on?  2.  Avoid  major  sewer  infrastructure  3.  Avoid  structures  on  pilings  4.  During  construc0on:   •  Maintain  Caltrain  opera0on   •  Minimize  disrup0on  to  local  land  uses   •  Accommodate  local  circula0on  and  regional  traffic  
  10. 10. Op0on  1:    Trench  in  between  freeway  pilings  •  Simplest  op0on  •  May  not  be  physically  or  structurally   feasible  
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