SFOBB West Span BPM Path Feasibility and Environmental Public - PowerPoint PPT Presentation

SFOBB West Span BPM Path Feasibility and Environmental Public Workshop Pier 1 – Bayside Room January 20, 2016

2 2 Welcome!

Workshop Agenda • Arrival (6:00) • Presentation (6:10-6:45) • General Q&A (6:45-7:00) • Feedback Stations (7:00-7:40) Project Process, Funding, and Environmental o San Francisco o Main Span o Yerba Buena Island (YBI) o • Station Reports (7:40-7:45) • Adjourn (7:45) 3 3

Previous Studies • Feasibility Study (2002) PSR-PDS (2014) 4 4

Project Goals • Downtown San Francisco bicycle & pedestrian link to East Bay & Treasure Island • Facilitate and not hinder Caltrans maintenance access • Buildable and fundable alternative Affordable Approvable Inspiring 5 5

Project Description • San Francisco touchdown ~2500 feet or ½ mile • Main Span 10,000 feet or ~ 2 miles • YBI touchdown and path ~ ½ mile Downtown Yerba Buena Main Span San Francisco Island Profile to follow 6 6

Project Benefits • Transportation link from East Bay and Treasure Island to/from San Francisco. • Connects to East Span Pathway (Bay Bridge Trail) • Tourism, health and recreation • Closure link for the Bay Trail • Class 1 - Protected from vehicular traffic • Accessible (ADA) – 5% or less continuous or 12H:1V w/landings 7 7

Workshop Goals • Project information and process • Feedback on initial alternatives • How will you use the path? • Where should the path connect? • Features and Amenities • Suggestions or Concerns 8 8

Pathway Options

The Distance • How far and how long ? Length Pathway Segments (miles) (mins) (mins) BPM Pathway 2.9 17 57 SF Approach 0.5 Main Span (West) 2.0 YBI Approach and Path 0.4 Bay Bridge Trail 4.4 26 88 East Span 2.3 Approach 1.1 Emeryville(Shellmound) 1.0 Total Bay Bridge Trail & Pathway 7.3 44 145 10 10

Ohlone Greenway: El Cerrito 11 11 Pathway Section

Pathway Width East Span 15½’ Golden Gate:10’ max Tilikum Crossing 2 x 14’ Brooklyn 8’ to 16’ 12 12

Amenities • Benches • Look Out • Lighting • Safety/ Call Boxes • Wayfinding • Interpretive Displays 13 13

San Francisco Landing Options

Downtown SF Approaches Where should the path connect in San Francisco? • 19 Alternatives  6 Alternatives • Touchdown locations range from Essex Street to The Embarcadero • North and South bridge connections 15 SFOBB West Span BPM Path 15

Downtown SF North Approaches • 3 Alternatives considered for further study Essex Street 1. Caltrans Paint Yard 2. The Embarcadero 3. 1 2 3 16 SFOBB West Span BPM Path 16

Downtown SF South Approaches • 3 Alternatives considered for further study 1. Beale Street 2. Caltrans Paint Yard 3. The Embarcadero 3 2 1 17 SFOBB West Span BPM Path 17

Elevator Option • At Pier W1 – touchdown just west of Embarcadero • Elevator Only Option – no ramps • Dual High Speed – high capacity 18 18

19 Essex Street Landing 19

20 Paint Yard Landing 20

Embarcadero Landing 21 21

Attach to Existing On-deck San Francisco Path Options 22 22 Cross-Sections Stand-alone

Yerba Buena Island Options

YBI Options • Interface with ongoing projects 24 SFOBB West Span BPM Path 24

YBI Options • 6 major options 25 SFOBB West Span BPM Path 25

YBI - East Bike/ Ped Vista Point • Connection from East Span Trail • Vista Point w/bathrooms, water, bike racks, signage/info 26 SFOBB West Span BPM Path 26

YBI – Below Hillcrest-1 • Cut or retained fill with some structures • Interference with Cost Guard Access Retained Wall - Fill 27 27

YBI – Below Hillcrest-2 • Cut or retained fill with some structures • Steep terrain and slopes Typical Viaduct Retained Wall - Fill Retained Wall - Cut 28 28

YBI – Above Hillcrest – N/ S • Cut or retained fill above Hillcrest (to inside) • North option – use of west side ramps 29 SFOBB West Span BPM Path 29

YBI – Suspended & Tunnel Options • Tie-in to Main Span Suspended Option • Option to continue through crown of existing tunnel Suspended Path at West Portal 30 SFOBB West Span BPM Path 30

Main Span Options

Main Span Alignments • North or South Options; similar alignments • Suspended Elevated Deck Option • Structural and architectural alternatives 32 32

Do you prefer the path on the north or south side of the bridge? 33 33 North or South

Propped Cantilever Options 34 34

Cantilever Beam w/ Moment 35 35 Connection

Pinned Boomerang Deck Extended Alternate 36 36

Outboard Deck w/ Existing Suspension Cable 37 37

Tamar Bridge Path Addition Deck Uplift w/ stay cables 38 38

Suspended Elevated Deck 39 39

Suspended Elevated Deck 40 40

Project Timeline • Funding required to advance design and construction Current BPM Project Future Phases (Est. 8 ‐ 10 Years) 2015 2016 Alternatives Screening Conceptual Design Preliminary Design Environmental Studies Final Design (PS&E) Funding/Procurement Construction Public Workshops 41 41

Agenda – Q&A • Arrival (6:00) • Presentation (6:10-6:45) • General Q&A (6:45-7:00) • Feedback Stations (7:00-7:40) Project Process and Environmental o San Francisco o Main Span o Yerba Buena Island (YBI) o • Station Reports (7:40-7:45) • Adjourn (7:45) 42 42

Breakout Stations • Arrival (6:00) • Presentation (6:10-6:45) • General Q&A (6:45-7:00) • Feedback Stations (7:00-7:40) Project Process and Environmental o San Francisco o Main Span o Yerba Buena Island (YBI) o • Station Reports (7:40-7:45) • Adjourn (7:45) 43 43

Summary of Breakouts • Project Overview and Planning • San Francisco Touchdown • Main Span • Yerba Buena Island YBI Main Span SF 44 44

Next Steps • Evaluate Feedback – inform design process • Conceptual design and initial cost estimates • 2 nd Workshop – Fall 2016 • Complete Environmental Studies • Final Design • Funding • Construction 45 SFOBB West Span BPM Path 45

Thank you!