Download - Mary McCahon Bridge Aesthetics
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Practical Ideas for Making History &Context Matter in Design Decisions
Mary E. McCahon
Senior Historian
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How do we make history live andat the same time point the way tothe future?
I. M. Pei
When History Is the Context
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Yesterdays Context, Todays or Tomorrows?
Courtesy: Fred Gottemoeller
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Yesterdays Context, Todays or Tomorrows?
Courtesy Fred Gottemoeller
Columbus, OH
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Regulations Require it. Community Wants to Be Considered Historic & Special. Only Imitation of the Past Will Fit. Engineers Do It To Appease Preservation & Public. Its Cheaper & Easier to Make Standard Bridge Look Sort of Old. Preservation Hates Because Creates False History.
No Winners.
History and Context Are Supposed to Matter
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Are Context-Sensitive
Design Choices Really
Limited To (Poorly)
Imitating the Past?
History and Context Are Supposed to Matter
Too Often
History &CSS Ends
Up Being
Applied
Decoration
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Take Away Point -- Contemporary Is Often Better Choice
How Much More Appropriate Would This Railing Be For ModernBridge in Rural Setting, Like At the Mill?
-- Meets Design Criteria & Makes Historic & Contextual Sense.
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Old Bridge
ModernReplacement
There are Good Choices Beyond Decoration Ones
That Defer To Past But Dont Create False History
Modern Bridges Where History Matters
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History Not Understood: Old Was Once Modern
Modern 1914 Encased Stringer
Decorated Box Beam Replacement
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History Not Understood: This Is Decoration, Not Preservation
New Bridge Creates
False Sense ofHistory: Design isPure Conjecture
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History Not Used to Inform Design of New Bridge
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Historic RoadsThrough Estate
New Bridge
& Road
HD Boundary
Back Channel
Historic Bridge Isolated
Historic
Bridge
New Bridge and Road
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Real Stone Masonry IsHistoric Material
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History Overshadowed by Applied Decoration
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More Appropriate Designs for Rural and Suburban Settings
Simple, Quiet Designs
Use Color To Blend
Let Context or Setting MakeStatement
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Since 1979, codified (36 CFR 67)measure of appropriateness for federallyfunded or permitted work to identifiedhistoric properties.
10 Points Guiding Rehabilitation & NewConstruction
National Policy Since 1979
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3. Changes that create a false sense ofhistorical development shall not beundertaken.
9. New Construction shall be
differentiated from the old and becompatible with the massing, size, andcharacter of the setting
Criteria Against Which Effects Assessed
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Creating False History
Decorated Box BeamsAttempt to Recreate Arch
Bridge
Not Conform to SOI Standards
Box Beam Superstructure
Old Arch
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TY Lin Internationals Olympia-Yashiro Friendship Bridge
Olympia, WA
Old
New
New Bridge UsesPrinciples of Good
Design to BeCompatible withHistory: MeetsSOI Standards
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Good Contemporary Design
Compliments Historic & ScenicContexts
Yuma, AZ I-8
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Looking Forward In Historic District
Source: Anonymous
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New Sauvie Island Bridge Modern Technology
and history in the making.
Courtesy Robert Hadlow, ODOT
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Standard Designs Are Often The Correct Design: Its Our History Too
Many Times Workhorse Bridge Is OK
P. Brandenburg
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Moderns Still Needs to Blendwith Historic
Historic Districts
Generally All AboutScale and Material
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Old Informs New to Preserve Historic Significance
Oregons Stealth Railing Provides 10 Kip Containment ; Used
When Design Exception Can Be Supported.
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Old Informs New To Preserve Historic Significance
Same Intent
Preserve OriginalDesign WhileMaking Adequate forCurrent Use
Carroll Co. Indiana
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Old Informs New To Preserve Historic Significance
SuccessfulModificationof StandardDesign
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Forming (and Enjoying) Traffic Railings
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Old Informs New To Preserve Historic Significance
Is This AnAdverse Effect?
Lets Talk
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Dayton @ Confluence 4 Rivers -- 10 bridges 1907-1927
City Embark on Construction
Campaign Using Good
Contemporary Design Based
on Old City Beautifu l Movement
Philosophy
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8 Bridges At End of Useful Life Rehab Not Prudent
Washington St.
We learned a lot
on this one.
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The Learning Curve
Monument Ave
Ridge Ave
Monument Ave
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Old Bridge
New Does Not Have to Replicate Old
SHPOAgrees
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Stewart St Replacement Moves To Strong Statement of Own Time
Design TeamWoolpert EngineeringTY Lin International
and Context Reflects Yesterday,Today and Tomorrow
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Mary E. [email protected]
Thank You