Sunnyvale City Council
May 23, 2023

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BERNARDO AVENUE

UNDERCROSSING PROJECT
City Council
City of Sunnyvale
May 16, 2023

2City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023 Project Purpose and Limits

3City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023 Project Purpose
Existing Access – Evelyn Avenue Intersection

4City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023 Project Purpose
Existing Access – Central Expressway Intersection

5City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023 Project Purpose
Existing Bicycle and Pedestrian Routes

1.5 miles, 8 min
Bicycle Route

1.6 miles, 25 min
Pedestrian Route
6City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023 Project Description and Partners
Central Expressway
Undercrossing
Caltrain
Undercrossing
7City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023  Agreement with Mountain View
 Awarded consultant contract
 Developed conceptual options
 Joint Bicycle and Pedestrian Advisory
Commission/Committee (BPAC) Presentation
 Caltrain/Joint Powers Board project approval
 Refined options
 Public outreach
 On-going stakeholder coordination
Project to Date
8City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023 Project Alternatives
Western Alternative
9City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023 Project Alternatives
Western Alternative
 Pros:
 One tunnel
 Straight
 Shorter
 Cons:
 More utilities
 Construction staging in
roadways
 Small skylight option
 Tree loss in Central
median
10City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023 Project Alternatives
Eastern Alternative
11City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023 Project Alternatives
Eastern Alternative
 Pros:
 Less utilities
 Opening in middle lets
in air and light
 Open space for
construction staging
 Less tree loss
 Cons:
 Two tunnel segments
 Visibility
 Longer
12City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023 Local Examples – Santa Clara Caltrain Station
Comfort, Accessibility, Lighting, etc.

13City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023 Local Examples – California Ave, Palo Alto

14City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023 Local Examples
Homer Avenue, Palo Alto
Stevens Creek Trail at El Camino Real,
Mountain View
15City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023  Significant outreach effort
 Supportive of project
 Eastern option preferred
 Mid-crossing opening
 Natural light
 Less expensive
 Drainage concerns
Community Meeting, Feb. 2, 2023
 Other comments:
 Separation of bicyclists and pedestrians
 Flatten ramp areas
 Concerns about sharp turns
 Protect ramp openings
16City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023  Supportive of project
 Comments:
 Most like midway opening
 Ramp and tunnel widths
 Connections to roadways
 Compatibility with Evelyn
Avenue plans
 Prefer no bollards or chicanes
Mountain View BPAC Meeting, Feb. 22, 2023
 Passed motion to recommend eastern option
 4 in favor
 1 abstention

17City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023  Supportive of project
 Comments:
 Like midway opening
 Interest in protected intersection
 Compatibility with Evelyn
Avenue plans
 Concerns about sharp turns at
tunnel
 Interest in including art
Sunnyvale BPAC Meeting, March 16, 2023
 Passed motion to recommend eastern option to
Sunnyvale City Council
 5 in favor
 1 absence

18City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023  Supportive of project
 Comments:
 Like eastern option
 Interest in funding plan
 Interest in including art
 Include safety/security
considerations
Mountain View Council Transportation
Committee Meeting, April 10, 2023
 Passed motion to recommend eastern option to
Mountain View City Council
 3 in favor

19City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023  Consent calendar
 No public comments
 No Councilmember comments
 Passed on consent to recommend eastern option
 7 in favor
Mountain View City Council Meeting, April 25,
2023

20City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023  Finalize Caltrain Agreement
 Complete environmental clearance
 Caltrain to develop Request for Proposals for final
design
 Secure remaining funding
 Approximate gap of $44M
Next steps
21City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023 Staff Recommendation
Selection of the Eastern Alignment as the Preferred
Alignment of the Bernardo Avenue Undercrossing
Project

22City of Sunnyvale – Bernardo Avenue Undercrossing – May 2023 Q&A
Thank you!