Forty Foot Road Pedestrian Bridge

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Forty Foot Road Pedestrian Bridge
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Coauthors William Collins, RLA, VP
Simone Collins Inc. John Ruff,
P.E. QBS International Inc. Kristen York,
P.E. McMahon Associates Inc. Bashar
Qubain, P.E., Ph.D., Pres. GeoStructures Inc.
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Project Location Towamencin Township,
Montgomery County, Pennsylvania

Philadelphia
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Town Center Plan
Bridge Location Depress the state highway
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Town Center Area
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Goal Economic Re-development
Adjacent construction
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Phases
Initial
Build out
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Site plan bridge as a landscape structure
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Bridge Design Concept
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Site depressed alignment
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Material all Concrete

• Hybrid Design
• Precast conventional and custom
• Cast in place custom details

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Data
Span 78.5 Feet (clear) Width 40 Feet Vert.
Clearance 16.5 Feet Material Concrete
Cost 1.04M (bridge) 0.308M (4)
MSE 13M Total Project Completed 2007
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Integral Aesthetics considerations
Scale Form Light Texture Color
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Scale
Pedestrian and Vehicular
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Form typical construction
Stringer beam Safety barrier Sound wall
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Form Structural Innovation

• Fascia beam design combines the functions of
• Stringer beam
• Safety barrier
• Sound wall
• Art canvas

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Form Art
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Form Engineering
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Formwork
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Form Retaining Walls
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Form Deck
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Formwork
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Form Façade
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Form pylon panel details
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Form test panels
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Light
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Texture treatments and materials
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Texture formwork
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Texture continuity
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Color
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Color
Photo - renderings
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Texture affects Color
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Texture - with Color mockups
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Color density
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Materials affect Color
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Color the power of white
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Color of Light
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Attention to details is the amenity
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Beauty human reactions
Doylestown, PA
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The Grail
A model
Salginatobel Maillart
Merritt Parkway Dunkleberger
Aesthetics interpret structural forces
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• Awards

2009 Merit Award American Society of Landscape
Architects 2008 Concrete Bridge Award Portland
Cement Association 2007 Project of the Year
American Society of Highway Engineers
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Acknowledgements Towamencin Township Client
/ Owner PennDOT Partner funding /
construction Professional Team Simone
Collins Landscape Architecture Bridge
Designer QBS International Inc. Structural
Engineer McMahon Associates Inc. Civil and
Transportation Engineers GeoStructures Geotechni
cal Engineers RoadCon Inc. Contractor
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• Thank you