BUTTERF Y -WING BRIDGE

. . BUTTERF Y -WING BRIDGE FRANK LLOYD WRIGHT ARCHITECT

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SA N F RA N C I SCO BRIOGE VIEW OF MAIN SPAN

FRANK LLOYO WRIGHT ARCHITECT PENCil ON T1t"'CING PAPER- 19'"

b r d 9 e for a re a son 5

supports rail & same alignment as existing all concrete viaduct structu r e bicycle and pedestrian acce s s

view park at ship arch ntermodal station for TI people mover

candidate for base isolation designed by Frank Lloyd Wright I n 1949

www. The W rig h t B rid 9 e. com or write Including 8 S A ,S.E. to . The W right Bridge P.O. Box 20082 Oa kland 94620

IrS A MATTER OF WRIGHT vs WRONG Prep.1red as a public service to facilitate discussion by

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REPLACING THE EASTERN SPAN OF THE BAY BRIDGE. IT'S A MATTER OF WRIGHT vs WRONG

ILLUSTRATIONS COPYRIGHT FRANK LLOYD WRIGHT FOUNDATION

MTC'sdecisionthattherep!acement BUTTERFLY-WING BRIDG E span of the Bay Bridge "must have towers"- to make it an "important" bridge - resulted in the hodgepodge F RAN K L LOY D W RIG H TAR CHI TEe T design now on the boards. A "camel" of a bridge: one-half a suspension bridge with two miles of on-ramp! If conshucted, this will be a monwuent to MTC's attempt at greatness, but a sad 150 year joke on the East Bay. And certainly not a "signature span".

MTC's "rail option" is to trade two car lanes for one rail lane - and only hght rail at that. Not satisfied, the cities of Oakland, San Francisco, Emeryville and Berkeley have spoken at the polls. They want rail to be an integral part of the bridge, not an afterthought.

what to do? There is a call for an international competition. With only one rock to support a tower, any new design can only mimic MTC's mishmash design.

There is, waiting in the wings, a simple, elegant answer, one that has no compe!:ition: Frank Lloyd Wright's Butterfly-wing Bridge. Called by some the most artful bridge designed, this bridge satisfies all the concerns, B wants, and needs for a replacement of the eastern Bay Bridge span - a bridge with skill and grace. R

Wright's design can be evaluated without missing A

a heartbeat in the schedule. Wright's associate on this bridge, architect Aaron G. Green, needs to refine Wright's design in place of the viaduct work now being done. As the enclosed drawings attest, this is truly a bridge for all reasons .

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I. E~ PRESENTED ~ND PO ... ISHEO FOR STOD,"URPOSES M IJiE.IM8LE AlITR'''IV' FOR THE EMTE •• ~y BRIDGE SP~ • useD WITH PERMISSION THE OPI",ONS ""'RESSEO AA' 'OTTHOS' OFTHE ... o GREEN Oft TH' FllW FOUNOAT"",

E A S T S P A N E M E N T

ALL REA SON S

SAN FRANCISCO BRIDGE VIEW OF MAIN SPAN

FRANK LLOYD WRIGHT, ARCHITECT PENCIL ON TRACING PAPER' • 19~9

DOCUMENT .821 011 COPYRIGHT THE fft"NK LLOYD WRIGHT FOUNOATION

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WWW. THEWR.GHTBRIDCUi.C,OM

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REPLACING THE EASTERN SPAN OF THE BAY BRIDGE.

ILLUSTRATIONS COPYRIGHT FRANK lLOYD WRIGHT FOUNDATION

FRANK LLOYD

BUTIERFLY

T H E W R G

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IT'S AMATTEROF WRIGHT vs WRONG

WRIGHT

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SAN FRANCISCO BRIDGE VIEW

FRANK LLOYD WRIGHT. ARCHITECT Aaron G Groen. Archllect//llustrator IN~OlOfUO "HeIL 0"1 TIIVoCIHO PAPE"- - 1953

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rawn by Wright's Bay Area associate, architect Aaron G. Green, this illustration shows the approximate view from Treasure Island. Called by some the most

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artful bridge design, a blending of engineering and architecture, Frank Lloyd Wright's design would be an instant landmark.

Wright's design can be built along ~ ",UVtTt.DMOpuIUSHEO fO't Srl>DV pUlU'OSt'Aa m ~LIALTEft""T1Vf.'~ THE EAaTIR .. BAYMIDO! &PM. ustOWITH "1UobS&1Oft. !Hl OfIIHK)N.I UJ'ftIHaoMl HOl THeel Of" THI A G OIltE£ .. Oft THE FUW 'OUHDATK)N

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the same alignment of the existing bridge eliminating any conflict with Yerba Buena Island uses.

Wright's unique Butterfly-wing bridge has both skill and grace.

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IUUSTRATIONS COPYRIGHT FRANK LLoYD WRIGHT FOUNDATION

SAN FRANCISCO BRIDGE VIEW

FRANK LLOYD WRIGHT, ARCHITECT PENCIL ON TRACING PAPER'· 1953

fUW FNO OOCUJ.tfNT "821.01$ COPYRIGHT THE FRANK LLOYD WRIGHT FOUNDATION

SCOTTSDALE. AAIZC»IA

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he design of Frank Lloyd Wright's Butterfly-wing Bridge meets any and all criteria for the Bay Bridge eastern span. The arches gracefully skip across from the eastern shore to Yerba Buena Island. These classic compression arches compliment the catenary suspension cables of the western span. Wright's Butterfly-wing bridge has both skill and grace.

NO COMPETITION NEEDED If a competition were to be held,

we would have the same result for a "tower" design. With only one "rock," there can only be one tower. Wright's design, with its park and integrated rail, pedestrian and cycling access, far and away exceeds any parameters an international competition could reasonably expect to have.

ITS A MATTER OF WRIGHT vs WRONG

FRANK LLOYD WRIGHT

BUTTERFLY-W T NG

ARCHITECT

BRIDGE

THE R E S N 0

GRACEFUL DESIGN The graceful arches of Wright's

design are a pleasant juxtaposition to the western suspension span catenary cables of the Bay Bridge

BASE ISOLATION The arches spring from the water

line. Base isolation used isolates the entire bridge from earthquakes, unlike Calhan's current design .

COM PET T o N

SAME ALIGNMENT Wright's design allows

construction of his design to be along the same right-of-way as the existing bridge eliminating any conflict with Yerba Buena Island uses. The two roadbeds can be built along side the existing bridge, then the center rail portion can be completed after the existing bridge is dismantled.

• r PREseNTEDAHOPU81ISHED FOR STUDY PURPOSE.8#t.S D:lt V\A1l£AlTERNATIVE fOR rttE EAST£lltN BAY MIDGE SPM · IJSEOWITH PERMISSfON THE OPINIONS !XPRESSEDARE NOTlHOSEOFTJ04E A. G GItUN OR THE fLLW FOUNDATION WWW. THrWlltIGHTBIIIUDCOI . C.OM.


ILLUSTRATIONS COPYRIGHT FRANK LLOYD WRIGHT FOUNDATION

I n 1947 Frank Lloyd Wright presented the Bay Area with what some call the most artful bridge designed: the Butterfly-wing Bridge. This unique bridge can truly be called a '-bridge for all reasons."


SAN FRANCISCO BRIDGE PLAN VIEW OF MAIN SPAN

FRANK LLOYD WRIGHT. ARCIiITECT PENCIL ON TRACING PAPER' • 19.9

fl.LW "NO OOCUUENl 4'2 ' 002 COfl'''''UGHT 1M! 'ItAHK LLOYD ~IUOHT FOUNDATION

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SAME ALIGNMENT ••••••••• Wright's design allows


PUBLIC PARK The most unique feature of

Wright's design is the "public park" located at the top of the large shlpchannel arch.

This park can have a dual purpose for this site: an overlook to the East Bay, and a perfect spot for an intermodal transit station with a Treasure Island rransportaion system.


FRANK LLOYD WRIGHT

BUTTERFLY-WI G

ARCHITECT

BRIDGE

W R G H T

RAIL INCLUDE. Wright incorporated rail as an

integral part of the structure. He uses the space for rail as a structural back bone for the bridge.

TRANSIT STATION A transit station at the high point of

the bridge will be a "high point" for tourists and site-seers overlooking the east bay. The station would be the "answer" to access to Treasure Island.

N L N E

LANDMARK STATUS Lastly, it must be pointed out the

distinct advantage having a true Frank Lloyd Wright design bridge for the east bay span of the Bay Bridge: An architect with an established international reputation, using his design would afford the bridge "landmark" status (w}right from the beginning!

PRE.Sf:HTEOANOfl'UBI.ISHEO "OR STUDY PURII'Oe(s AS ItI.1 VlAllfALTEft "ATIVE: Fc::wt THE EASTER'" BAY ,'UOOE8PAH · UI!OWlTH Nfll:NI"'~ THE OPINIOHS I!XPlituaEDAAI NOTTMOeI OF THE A.. 0 OJIUN Oft THEfLlW f'OUHOATION


ILLUSTRATIONS COPYRIGHT FRANK LLOYD WRIGHT F OUNDATION

Wright', de,ign oom .. with a premium structural engineering pedigree:

Structural engineer T.Y. Lin, along with Wright's associate, architect Aaron G. Green, were members of a consortium that promoted this design for a "second crossing" for the bay.


SAN FRANCISCO BRIDGE VIADUCT· SIDE VIEW

FRANK LLOYD WRIGHT, ARCHITECT PENCIL ON TRACING PAPER' • 19~9

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SAME ALIGNMENT Wright's des ign allows



RAN K L LOY 0 w R G H T S F

B UT TERFLY-WTNG BRIDGE

T H E w R G

STRUCTURALLY SOUND U sing "post-tensioning"

techniques, this bridge can easJy sit on the bay mud. Wright's design is a candidate for "base isolation" - a construction technique where the entire structure floats on its foundation .. This reduces the structural loads, which results in a less expensive bridge and foundation.

H T D E S G N

GRACEFUL DESIGN The graceful arches of Wright's

design are a pleasant juxtaposition to the western suspension span catenary cables of the Bay Bridge


PRESENTED AlII 0 PUBUSHED FOR STUDY PUltf'OSEI /4:s D:fl V\A.Il[ AlTfJtNATIV! I'OIt TWE EASTERN 8A.Y "-100£ SPAN . U8[OWtll4 fOfJ'M1S!UOH THE OPlNJOH$ EXPRE.&SEDAAI NOT THOlE Of THE A. 0 GREEN OR THE FUW FOUNDATION WWW . THEW.,CHTB.UD40 •• CO"","

R EPLACING THE EASTERN SPAN OF TH E B AY BRIDGE.

IUUSTRAOONS c OPYRIGHT F RANK LLoYD W RIGHT F OUNDATION

SAME ALIGNMENT Wright's design allows

construction of his design to be along the same right-of-way as the existing bridge eliminating any conflict with Yerba Buena Island uses.

The two roadbeds can be built along side the existing bridge, then f-the center rail portion can be completed after the existing bridge is

dismantled.

SAN FRANCISCO BRIDGE VIADUCT VIEW ·SECTION

FRANK LLOYD WRIGHT, ARCHITECT PENCIL ON TRACING PAPER' . lQ53

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Irs A MATTER OF WRIGHT vs WRONG

LLOYD WRIGHT ARCHITECT

B RIDGE ER~LY - WI G

G H RT 0 N

ail is an integral part of Wright's Butterfly-wing Bridge. He uses the space for rail as a structural back bone for the bridge. (The note on the drawing indicates "make larger for rapid transit cars ."

RAIL INCLUDED Wright incorporated rail as an

integral part of the structure.

TRANSIT STATION A transit station at the high point

of the bridge will be a "high point" for tourists and site-seers overlooking the east bay.

TREASURE ISLAND ACCESS The station on the bridge would

be the "answer" to access to Treasure Island. Any development would be easily accomplished with this bridge in place with its transit station overlooking the East Bay.

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REPLACING THE EASTERN SPAN OF THE BAY BRIDGE IT'S A MATTER OF WRIGHT vs WRONG

BUTTERFLY-WING BRIDGE FRANK LLOYD WRIGHT ARCHITECT

a b rId g e for a J J rea son s

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SAME ALIGNMENT - Wright's design i;1.11ows construction of his design

to be along the same right-of-way as the existing bridge eliminating any conflict with Yerba Buena Island uses. The two roadbeds can be built along side the

existing bridge, then the center rail portion can be completed after the existing bridge is dismantled. Pedestrian and cycling access may be up a center parkway.

VIADUCT DESIGN - This bridge is designed for San Francisco Bay mud. It is a "viaduct" type design, which, unlil<e a suspension bridge does not need to have a "rocl<" for its foundation. With base isolation, its costs are reduced.

RAIL INCLUDED - Wright incorporated rail as an integral part of the

structure. The space for rail is a structural bacl< bone for the bridge.

PUBLIC PARK - The most unique feature of Wright's design is the park

located at the top of the large ship-channel arch. This parl< can have a dual purpose for this site: an overlool< to the East Bay, and a perfect spot for an inter

modal transit station with a Treasure Island transportaion system. The parl< will

be accessible by pedestrian, cycle or public transit only.

TRANSIT STATION - A transit station at the ship-channel arch will

afford easy transfer to a Treasure Island transit system:.

GRACEFUL DESIGN The graceful arches of Wright's design are a pleasant juxtaposition to the western suspension span catenary cables of the Bay Bridge

These classic compression arches compliment the catenary suspension cables of

the western span.

NO COMPETITION NEEDED - With only one "rock," there can only

be one tower. Wright's design, with its parl< and integrated rail, pedestrian and cycling

access, far and away exceeds any competition.

Wright S Butterfly -wing bridge has both skill and grace.

PRESENTED AND PUBLISHED FOR STUOY PURPOSES AS Ilif VIABLE ALTERNATIVE LlAL.OYQOIAIOHN", FOR THE EASTERN BAY BRIDGE SPAN· USED WITH PERMISSION THE OPINIONS

. AJ:~mCT .ocGiNffilNG EXPRESSED ARE NOT THOSE OF THE AARON G GREEN OR THE FRANK LLOYD WRIGHT FOUNDATION. ILLUSTRATIONS COPYRIGHT FRANK LLOYD WRIGHT FOUNDATION. (COLOR ADDEO FOR CLARITY BY LEAL CHARONNAT), USED WITH PERMISSION.

WWW.THEWRIGHTBRIPGE •. COM

OR WRITE (INCLUOE S.A S.E.) TO: THE WRIGHT BRIDGE

P.O. BOX 20082 OAKLAND, CA 94620

1 ••

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Item 1

ACCNO _000713

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BUTTERF Y -WING BRIDGE