I-710 Freeway CorridorUrban Design Concepts and Analysis

May 13, 2010

Concepts in process (subject to change)

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Purpose of Today’s Meeting• Review information

- Design Principles- Issues and Opportunities Matrix- Gateways and Linkages

• Identify any concerns and provide input

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2009 Discussions with Working Group• Initial Alternative Themes

- Conventional Treatments with LA River Theme- Eco / High Technology Concept- Contemporary Art Concepts

• Design Principles- Overall Theme- Sustainability- Sound Walls and Privacy Walls- Greening/Landscaping- Artistic Treatments- Connectivity with Communities- Freight Corridor- Bridges

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Overall Theme• Unified theme for the corridor through color, materials andstructural elements with unique gateway, entry arttreatments for individual communities

• References to adjoining L.A. River, sustainability andinnovative technology

Sustainability• Drought-tolerant landscaping• Water quality elements• Alternative energy generation• LED lighting• Continue bike and pedestrian connections to L.A. River trails, Metro Blue Line stops and to surroundingcommunities

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Sound Walls Adjacent to Residential

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I-405, Costa Mesa

Sound Walls and Privacy WallsTextured masonry with vines Offset design where space allows

Transparent sound walls at unique vista pointsAdjoining cities to require attractive landscaping and

screening on private property

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Opportunities for Greening / Landscaping

- Drought tolerant and nativelandscaping

- Plants that change color withthe seasons

45 15 15

44 1

34 2

13

21

4 31511

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Opportunities for GreeningSingle Point Urban Interchange

Landscape

Potential Water Infiltration /Retention Areas

1

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Opportunities for GreeningPartial Cloverleaf Interchange

Landscape

Potential Water Infiltration /Retention Areas

2

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Opportunities for GreeningFreeway to Freeway Interchanges

Landscape

Potential Water Infiltration /Retention Areas

3

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Opportunities for GreeningVacated Ramps & Excess R.O.W.

Landscape

Potential Water Infiltration /Retention Areas

4

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Opportunities for GreeningL.A. River

Landscape

Potential Water Infiltration /Retention Areas

- Plant palette consistent withLA River guidelines

- Dramatic water feature- Pathway/Recreation underthe freight corridor?

5

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Opportunities for GreeningCommunity side of the sound wall- Leave five feet minimum for treesat end of local cul-de-sacs, iffeasible

- Use vines when space is limited- Consider easements on privateproperty for trees

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Connectivity with CommunitiesCurrent and Proposed Bicycle Connections

Willow

Wardlow

Del Amo

Artesia

ClaraGage

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Connectivity with CommunitiesCurrent and Potential Pedestrian Connections

Hill

L.A. River crossing

Randolph St. R.R. Bridge

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Gateways From Communities and from the Freeway- Work with community to identify locations and content of gateways

Del Amo

Alondra

Imperial

Florence

Slauson

I710/I-5

Bandini/Atlantic

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Potential Arterial Gateways (Public Art)

Photovoltaic panels

LED light fixture

Galvanized steel pipewith slot for light fixture

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Freight Corridor: Design Principles• Design railings, sound walls and structures to reduceapparent massing as viewed from the community- Thin cantilevered sections of viaducts- Curved sound walls and/or walls with varied shadow patterns- Perforated or translucent screen walls- Light colors and materials that blend with the sky

• Graceful structural elements

• LED and colored lighting asaccents

• Integrate with the L.A. River

I-70, Glenwood Canyon, CO

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Artistic Treatments at Bridges: Design Principles• In scale with the speed of the freeway

• Large-scale contemporary art work at select locations

• On/off ramps sound walls could differentiate an adjoiningcommunity

• Recycled material art and other public art representingcommunities on arterial crossings

• Renewable energy as sculpturalelements and providing energy forLED lighting

• Four Workshops withWorking Group

- Design Principles, Gateways, Linkages- Bridges and Freight Corridor- Aesthetics and Sustainable Concepts- Urban Design Concepts

• Key View EnhancementDrawings for Freight Corridor

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Next Steps