San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s –...
Transcript of San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s –...
![Page 1: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/1.jpg)
San Francisco-Oakland Bay Bridge West Span
Bicycle/Pedestrian/Maintenance Path
![Page 2: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/2.jpg)
Project overview Background Project goals San Francisco downtown connections Path on West Span YBI/TI connections Project schedule, cost & phasing Next step
Presentation Overview
2
![Page 3: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/3.jpg)
Project Overview
![Page 4: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/4.jpg)
1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans West Span Bike/Ped/Maint.
Pathway Feasibility Study Completed 2004 – West Span Seismic Retrofit Completed 2006 – West Span Deck Overlay Completed 2009 – BATA authorizes preparation of a Project
Study Report for West Span Bike/Ped/Maint. Pathway
Background
![Page 5: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/5.jpg)
Project Goals San Francisco downtown bicycle &
pedestrian link to East Bay &
Treasure Island
Caltrans maintenance access to
reduce daily maintenance closure
![Page 6: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/6.jpg)
San Francisco Downtown Design Considerations
ADA requirements Design requirements Lack of right of way Planned development Connectivity Safety Costs Environmental impact
![Page 7: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/7.jpg)
Downtown SF Planned Development
![Page 8: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/8.jpg)
San Francisco-Alt SFN – 1A
![Page 9: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/9.jpg)
San Francisco-Alt SFN – 1CX3
![Page 10: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/10.jpg)
San Francisco-Alt SFN – 1F
![Page 11: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/11.jpg)
Alternative SFS – 2 and 2B
![Page 12: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/12.jpg)
Alternatives Considered & Deferred
![Page 13: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/13.jpg)
Pier W1 Elevator & Stairs Tower
![Page 14: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/14.jpg)
Main Span Design Considerations
Seismic
Wind
Constructability
Maintenance considerations
Shipping channel clearance
![Page 15: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/15.jpg)
Main (West) Span
![Page 16: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/16.jpg)
Main Span Cross Section
![Page 17: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/17.jpg)
Shipping Channel Clearance
Two Options
Suspender cable shortening
• Never been done before
Deck replacement
• Savings For BPM Path Project
• Minimize traffic disruption
![Page 18: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/18.jpg)
YBI Design Considerations ADA requirements Steep terrain Planned development Lack of right of way Maintenance of USCG operations Safety Cost Environmental impact
![Page 19: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/19.jpg)
Treasure Island/YBI Circulation Plan
![Page 20: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/20.jpg)
Alternative YBI – N1
![Page 21: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/21.jpg)
Alternative YBI – 2A
![Page 22: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/22.jpg)
Alternatives Considered & Deferred
![Page 23: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/23.jpg)
Alternatives Considered & Deferred
![Page 24: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/24.jpg)
Project Schedule
0 2 4 6 8
Funding Commitment Made
Preliminary Design
Environmental
Final Design Acquire Right
of Way
10
Identify Project Funding
Construction
Project Environmental Approval
![Page 25: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/25.jpg)
Project Cost High project cost is a challenge
Estimate being developed
2001 Study Estimate $300 to $350 million
(2011 Dollars)
Additional escalation of $200 million if
project proceeds today
Cost escalation for future start undetermined
![Page 26: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/26.jpg)
Proposed Project Phasing Phased/Initial phased segment approach
• North side - public access
• South side - maintenance only
• Does not preclude further south side access
Cost reduction w/Deck replacement
Potential savings $70 million range (2011$)
![Page 27: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/27.jpg)
Next Step
PID completion : Summer 2012
Allows for programming of funds to
develop project
![Page 28: San Francisco-Oakland Bay Bridge West Span Bicycle ... · 1936 – Bay Bridge Opened 1950’s – Rail Removed from Lower Deck 1989 – Loma Prieta Earthquake Damage 2001 – Caltrans](https://reader036.fdocuments.net/reader036/viewer/2022062505/5ebdba01c7e014794d5d8403/html5/thumbnails/28.jpg)
Information Request/Comments/Ideas
MTC/BATA - Peter Lee [email protected] (510) 817-5716 Caltrans - Robert Blanco [email protected] (510) 286-8676 TYLin - Francis Lo [email protected] (510) 457-3038
For Project Information
go to: www.mtc.ca.gov