Colorado Street Bridge Suicide Mitigation Enhancements Project - - PowerPoint PPT Presentation

Department of Public Works

Colorado Street Bridge – Suicide Mitigation Enhancements Project

Public Safety Commission February 3, 2020

Department of Public Works

Project Background

• April 17, 2019 – Public Safety Committee

directed staff to re-evaluate and streamline the project’s environmental and design scope of work, and return with a condensed project schedule and reduced design cost

• May 15, 2019- The Public Safety

Committee recommended the award of contract to Donald MacDonald Architects

• May 20, 2019, City Council authorized

award of contract to Donald MacDonald Architects for environmental and design services

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Department of Public Works

Task Force Recommendations

Design and Install:

• Full Length Vertical Barriers
• Minimum height above highest toehold of 7’-6”
• Extend both sides of the bridge for its entire length
• End Treatments
• Deter a person’s ability to walk the outside ledge to a location

where a jump would cause serious injury or death

• Complimentary Measures
• Work in concert with the measures above to mitigate suicides and

suicide attempts from the bridge to the greatest extent possible

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Department of Public Works

Project Meetings

• September 9, 2019 – Stakeholder Meeting
• September 26, 2019 – Community Meeting – Solicit comments

and public input

• October 29, 2019 – Community Meeting – Present various

concepts and solicit feedback

• November 15, 2019 – Pasadena Heritage and stakeholders
• November 19, 2019 – Historic Preservation Commission

(Advisory Review)

• November 26, 2019 – Design Commission (Advisory Review)
• February 3, 2020 – Public Safety Committee

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Department of Public Works

Guiding Principals of Design

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Department of Public Works

Guiding Principal - Effectiveness

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Department of Public Works

Guiding Principal - Effectiveness

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Department of Public Works

Guiding Principle – Historic and Character Defining Features

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Department of Public Works

Guiding Principle – Bridge Aesthetics

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Department of Public Works

Secretary of the Interior’s Standards A2 Mesh

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A2

Vertical Frame/Flexible Mesh (w/o Intermediate Posts)

14’

Department of Public Works

Secretary of the Interior’s Standards A2 Mesh

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A2

Vertical Frame/Flexible Mesh (w/o Intermediate Posts)

Secretary of the Interior’s Standards A2 Mesh

Department of Public Works

Secretary of the Interior’s Standards A2 Mesh

A2

Vertical Frame/Flexible Mesh (w/o Intermediate Posts)

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Department of Public Works

Secretary of the Interior’s Standards A2 Mesh

Vertical Frame/Flexible Mesh (w/o Intermediate Posts)

A2

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Department of Public Works

Secretary of the Interior’s Standards A2 Mesh Ver 2

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Vertical Frame/Rigid Mesh (w/ Intermediate Posts)

A2

14’

Department of Public Works

Secretary of the Interior’s Standards A2 Mesh Ver 2

Vertical Frame/Rigid Mesh (w/ Intermediate Posts)

A2

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Department of Public Works

Secretary of the Interior’s Standards A2 Pickets

A2

Vertical Frame/Pickets

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Department of Public Works

A2

Vertical Frame/Pickets

Secretary of the Interior’s Standards A2 Pickets

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Department of Public Works

Secretary of the Interior’s Standards A2 Pickets

A2

Vertical Frame/Pickets

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Department of Public Works

Secretary of the Interior’s Standards A2 Pickets

Vertical Frame/Pickets

A2

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Department of Public Works

Secretary of the Interior’s Standards B2 Mesh

B2

Curved Frame/Rigid Mesh (w/Intermediate Posts)

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13’

Department of Public Works

Secretary of the Interior’s Standards B2 Mesh

B2

Curved Frame/Rigid Mesh (w/Intermediate Posts)

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Department of Public Works

Secretary of the Interior’s Standards B2 Mesh

B2

Curved Frame/Rigid Mesh (w/Intermediate Posts)

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Department of Public Works

Secretary of the Interior’s Standards B2 Mesh

Curved Frame/Rigid Mesh (w/Intermediate Posts)

B2

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Department of Public Works

Secretary of the Interior’s Standards B2 Mesh - Hybrid

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B2

Hybrid Rigid Mesh (w/Intermediate Posts)

Department of Public Works

Secretary of the Interior’s Standards B2 Mesh - Hybrid

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B2

Hybrid Rigid Mesh (w/Intermediate Posts)

Department of Public Works

Comparative Heights of the Options

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Department of Public Works

Comparative Heights of the Options

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Department of Public Works

Top of Barrier and Lights

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Department of Public Works

Community Consensus

• Keep all alcoves open
• Position the barrier on top of the existing

balustrade

• Position the barrier on the bridge side of the lamp

poles to increase effectiveness

• Keep the existing lamps but modify the height to

maintain visibility on the bridge

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Department of Public Works

Pros and Cons

30 A2 B2 Flexible Mesh Rigid Mesh Pickets Curved Rigid Mesh

• Effective
• Fewer vertical posts
• Doesn’t look institutional
• Maximizes transparency
• Contingent on finding an

acceptable flexible mesh pattern that prevents toe holds

• Effective
• Additional vertical posts

compared to flexible mesh

• Doesn’t look institutional
• Maximizes transparency
• Fewer vertical posts at

alcoves

• Contingent on finding an

acceptable rigid mesh pattern that prevents toe holds

• Less effective
• Introduction of

horizontal toe holds

• More traditional look
• Vertical rods present

limited transparency looking down the bridge

• Most effective
• Decorative look
• Contingent on

finding an acceptable flexible mesh pattern

Department of Public Works

Next Steps

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DESCRIPTION DATE Full-Scale Mock-Up Installation March 2020 Historic Preservation Commission: Follow-Up Review April 2020 Design Commission: Follow-Up Review April 2020 Public Safety Committee/ City Council: Design Recommendation and Approval May 2020