Riverside Overpass Master Planning Presenters: Sally Swanson & Magdy Abdalla June 11, SALLY SWANSON ARCHITECTS, INC. Riverside Elementary School West Contra Costa Unified School District 220 Sansome Street, Suite 1100, San Francisco CA | T: |

 Existing School Site  Master Plan Objectives  Caltrans Proposed Solution  Alternative Locations  Desired District Outcomes  Conclusion  Questions and Answers Agenda

Existing School Site

Master Plan Objectives The School’s Master Plan focuses on three elements Transportation & Circulation Buildings Open Space

Master Plan Objectives Open Space  Designate open spaces and create policies to ensure preservation and maintenance  Identify safe areas and pleasant open spaces  Landscape elements  Incorporate accessibility  Design standards that will increase safety and comfort 1

Master Plan Objectives  Minimal conflicts between pedestrians and vehicles  Increase parking facilities - visitor and disabled parking  Clearly identify entries into school - including signage and security Transportation & Circulation 2 6

Master Plan Objectives Buildings  High quality architecture and open space  In harmony with immediate surroundings  Facilitate accessibility and pedestrian circulation  Environmentally sustainable landscape  Economically feasible and functional  Support green and sustainable techniques 3

Master Plan Limitations 1. Site Approx. = Acres CA Department of Education Standards = 10 Acres 2. Hayward Fault 3. Noise from freeway 4. Lack of required District facilities 5. ADA code violations

Caltrans Proposed Solution

at I-80 and San Pablo Dam Road

Design not to ADA codes:  Path of Travel ‒In vehicular way ‒No designated path  Location to Administrative Entrance – 380 feet  Accessible space not compliant ‒Not Van accessible ‒Aisle not on passenger side Reconfiguration of parking necessary Parking Lots and Spaces Caltrans Proposed Solution

 4- story structure  Creates danger zone  Parking - Pedestrian movement in conflict  Location hides parking Design Security Concerns Caltrans Proposed Solution Danger Zone Fire Lane

 Four- story structure ‒reduces site square footage  Reduces available parking Space Concerns Caltrans Proposed Solution The scale of the overpass is not compatible with the height and design of Riverside Elementary

 Cars, copper piping, & Computers  Disabled access in conflict with vehicular traffic  Lack of site control Compromised Community Caltrans Proposed Solution

Noise Concerns  Landscaping removed  Does not improve site acoustics  Overpass traffic on school site cannot be controlled

Caltrans Solution Analysis Caltrans Design Pros Project is designed Approach is obtained Potential funding available Cons Creates security concerns Utilizes desired acreage Enhances compromised community Impacts landscaping ADA non-compliance

ALTERNATIVE LOCATIONS

Alternative #1: West side of Amador on Caltrans property Alternative Locations

Pros No property acquisition No utility line replacement Maximizes site utilization Cons Amador St. requires traffic controls Redesign required Additional timing Possible CEQA Conceptual Alternative Analysis Alternate #1

Alternative #2: Corner property at Riverside Avenue Alternative Locations

Pros Minimal traffic interface No utility line replacement Maximizes site utilization Appropriate scale Minimal redesign requirements Cons Property acquisition Additional timing Possible CEQA Conceptual Alternative Analysis Alternate #2

1. Safe staff student ingress/egress 2. Maximize available site acreage 3. Clearer line of site to all points on campus 4. Mutually agreeable overpass solution Desired District Outcomes

Conclusion Decision needs to be made due to cost constraints  Save Overpass Funding  Construct Overpass  Finalize Master Plan  Provide Best Development Outcomes

QUESTIONS AND ANSWERS

Alternative #3: Acoustic barrier adjacent to Amador Street Alternate 3

Alternative #4: Acoustic barrier adjacent to Amador Street Alternate 4