Daniel Dolan / Architects with Guajardo Associates
Design Architect: Daniel Dolan / Architects, Chicago—Daniel Dolan (project designer) Architect of Record: Guajardo Associates, Chicago—Alphonse Guajardo (project executive); Donald Copper (project principal) Engineer: Earth Tech, Inc. — Lawrence L. Kirchner (project engineer), Eric Lindemann (project manager)
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35th STREET | 41st /43rd STREETS | NORTH AVENUE |
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Architect's Statement
THE LAKEFRONT, PARKS & PEDESTRIAN ACCESS
Chicago has preserved its lakefront as public parkland accessible to all its citizens for enjoyment of the fourth largest fresh water lake in the world. This democratic access to the lake for recreation, exercise, family events and special civic events has made Chicago one of the most desirable cities in the world to live in and to visit.
At many points along Lake Shore Drive, the most effective pedestrian access to the lakefront is by bridge. These bridges are a crucial component in the link between Chicago neighborhoods and the lakefront. They provide an equal opportunity for all to enjoy the benefits of lakefront parks. These bridges serve as neighborhood landmarks.
Within the lakefront parks, the bridges are a nexus of circulation, bringing together cyclists, skaters, runners and walkers of all ages and abilities. Here, there are opportunities for meeting, gathering, entertainment and refreshment. These bridges serve as landmarks in the lakefront parks.
From Lake Shore Drive, the bridges are opportunities to make bold civic statements; to project the pride of place that has always characterized Chicago. The rapid succession of bridges spanning the South Drive can be a dynamic gateway to Chicago's downtown, museum campus and convention centers. These bridges would serve as landmarks on Lake Shore Drive.
THE CONCEPT
The action of wind and water results in the natural beauty of waves. The desire to connect Chicago's communities to its lakefront created the inspiration for a 'wave of steel.' The team of Earth Tech, Daniel Dolan Architects and Guajardo Associates propose the wave form for the pedestrian bridges at 43rd, 41st, and 35th Streets. We believe this tidal image is appropriate to Lake Michigan, the lakefront park, and Lake Shore Drive.
Approaching Lake Michigan from the neighborhoods, the wave presents a graceful, inviting form. On the bridge and inside the wave, the form presents a fluid and exciting canopy structure, each side alternating crests and valleys, and framing views of the lake, downtown Chicago, and the flowing traffic of Lake Shore Drive.
Driving North on Lake Shore Drive, the bridges will serve as a remarkable gateway experience approaching downtown Chicago. From both directions, the repetitive experience of the graceful form in a few short blocks will give the effect of a sequence of waves cresting and crashing ashore.
THE BRIDGE
The structure of the bridges is the wave form itself: two long-span through-type box trusses, comprised of welded, painted tubular steel members. A 25' wide pedestrian walkway and bicycle path is centered within the curvilinear structure, whose linear components rotate through two cycles of oscillation. The North and South trusses are _ cycle out of phase, creating the unique expression of a wave gaining momentum and ultimately cresting and breaking.
The walkway path surface is an athletic running surface tile, over a composite deck, supported on wide flange steel beams spanning between tapered wide flange outrigger beams. The outrigger beams carry the 45' width of the truss system through an 18" diameter steel tube. The outrigger design locates the structure at a 10' distance from the walkway edge, preventing climbing and inhibiting potential vandalism. An 8" square cable net positioned over the outrigger beams further restricts access to the structure. A 4' painted steel guardrail with braided stainless steel cables offers protection for pedestrians and cyclists.
The waveform structure is very effectively illuminated by metal halide up-lights mounted on each face of the outrigger beams.
The bottom chord of each truss is cambered 32" over the 210' spans. Massive reinforced concrete piers support the spans at pin connections. The sculpted piers at the East and West ends are inclined at 608 in opposing direction of the cant of the wave at the support points.
Utility lines that currently run above the 35th Street bridge are proposed to be integrated into the structure below the walkway. Highway signage will be integrated into the bridge design as necessary.
THE SITE DESIGN
The lake side and neighborhood side landings are treated in unique ways. At the lake side, the truss members engage the ramp and stairs. A landmark plaza is proposed at the lake side of each bridge, generous enough for gatherings, events and the safe conduct of pedestrian, skating and cycling traffic. The plaza at the 35th Street bridge is anchored by a sculpture of two abstracted sailing boats that appear to be sailing Lake Michigan from the bridge perspective. The masts of these vessels are intended as flagpoles. They are also intended to anchor the bridge experience on the lake side, as the Stephen Douglas memorial and monument does on the land side.
At the neighborhood side of each bridge, the structure is articulated to lend a grand scale to the stairs and ramp approaching the span. The top plane of the truss emerges as a dramatic canopy structure. For each bridge, this approach will be designed specifically for the neighborhood context.
The proposed bridges spanning South Lake Shore Drive will restore a sense of civic pride and excitement to neighborhood use of the lakefront. The design will generously accommodate large groups, families, cyclists and skaters, and those with mobility impairments. The safety of pedestrians and vehicle traffic alike will be top priority in developing the design.
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Architect's Statement
THE LAKEFRONT, PARKS & PEDESTRIAN ACCESS
Chicago has preserved its lakefront as public parkland accessible to all its citizens for enjoyment of the fourth largest fresh water lake in the world. This democratic access to the lake for recreation, exercise, family events and special civic events has made Chicago one of the most desirable cities in the world to live in and to visit.
At many points along Lake Shore Drive, the most effective pedestrian access to the lakefront is by bridge. These bridges are a crucial component in the link between Chicago neighborhoods and the lakefront. They provide an equal opportunity for all to enjoy the benefits of lakefront parks. These bridges serve as neighborhood landmarks.
Within the lakefront parks, the bridges are a nexus of circulation, bringing together cyclists, skaters, runners and walkers of all ages and abilities. Here, there are opportunities for meeting, gathering, entertainment and refreshment. These bridges serve as landmarks in the lakefront parks.
From Lake Shore Drive, the bridges are opportunities to make bold civic statements; to project the pride of place that has always characterized Chicago. The rapid succession of bridges spanning the South Drive can be a dynamic gateway to Chicago's downtown, museum campus and convention centers. These bridges would serve as landmarks on Lake Shore Drive.
THE CONCEPT
The action of wind and water results in the natural beauty of waves. The desire to connect Chicago's communities to its lakefront created the inspiration for a 'wave of steel.' The team of Earth Tech, Daniel Dolan Architects and Guajardo Associates propose the wave form for the pedestrian bridges at 43rd, 41st, and 35th Streets. We believe this tidal image is appropriate to Lake Michigan, the lakefront park, and Lake Shore Drive.
Approaching Lake Michigan from the neighborhoods, the wave presents a graceful, inviting form. On the bridge and inside the wave, the form presents a fluid and exciting canopy structure, each side alternating crests and valleys, and framing views of the lake, downtown Chicago, and the flowing traffic of Lake Shore Drive.
Driving North on Lake Shore Drive, the bridges will serve as a remarkable gateway experience approaching downtown Chicago. From both directions, the repetitive experience of the graceful form in a few short blocks will give the effect of a sequence of waves cresting and crashing ashore.
THE BRIDGE
The structure of the bridges is the wave form itself: two long-span through-type box trusses, comprised of welded, painted tubular steel members. A 25' wide pedestrian walkway and bicycle path is centered within the curvilinear structure, whose linear components rotate through two cycles of oscillation. The North and South trusses are _ cycle out of phase, creating the unique expression of a wave gaining momentum and ultimately cresting and breaking.
The walkway path surface is an athletic running surface tile, over a composite deck, supported on wide flange steel beams spanning between tapered wide flange outrigger beams. The outrigger beams carry the 45' width of the truss system through an 18" diameter steel tube. The outrigger design locates the structure at a 10' distance from the walkway edge, preventing climbing and inhibiting potential vandalism. An 8" square cable net positioned over the outrigger beams further restricts access to the structure. A 4' painted steel guardrail with braided stainless steel cables offers protection for pedestrians and cyclists.
The waveform structure is very effectively illuminated by metal halide up-lights mounted on each face of the outrigger beams.
The bottom chord of each truss is cambered 32" over the 210' spans. Massive reinforced concrete piers support the spans at pin connections. The sculpted piers at the East and West ends are inclined at 608 in opposing direction of the cant of the wave at the support points.
Utility lines that currently run above the 35th Street bridge are proposed to be integrated into the structure below the walkway. Highway signage will be integrated into the bridge design as necessary.
THE SITE DESIGN
The lake side and neighborhood side landings are treated in unique ways. At the lake side, the truss members engage the ramp and stairs. A landmark plaza is proposed at the lake side of each bridge, generous enough for gatherings, events and the safe conduct of pedestrian, skating and cycling traffic. The plaza at the 35th Street bridge is anchored by a sculpture of two abstracted sailing boats that appear to be sailing Lake Michigan from the bridge perspective. The masts of these vessels are intended as flagpoles. They are also intended to anchor the bridge experience on the lake side, as the Stephen Douglas memorial and monument does on the land side.
At the neighborhood side of each bridge, the structure is articulated to lend a grand scale to the stairs and ramp approaching the span. The top plane of the truss emerges as a dramatic canopy structure. For each bridge, this approach will be designed specifically for the neighborhood context.
The proposed bridges spanning South Lake Shore Drive will restore a sense of civic pride and excitement to neighborhood use of the lakefront. The design will generously accommodate large groups, families, cyclists and skaters, and those with mobility impairments. The safety of pedestrians and vehicle traffic alike will be top priority in developing the design.
|
|
|
|
Architect's Statement
THE LAKEFRONT, PARKS & PEDESTRIAN ACCESS
Chicago has preserved its lakefront as public parkland
accessible to all its citizens for enjoyment of the fourth largest fresh
water lake in the world. This democratic access to the lake for recreation,
exercise, family events and special civic events has made Chicago one
of the most desirable cities in the world to live in and to visit.
At many points along Lake Shore Drive, the most effective pedestrian access
to the lakefront is by bridge. These bridges are a crucial component in
the link between Chicago neighborhoods and the lakefront. They provide
an equal opportunity for all to enjoy the benefits of lakefront parks.
These bridges serve as neighborhood landmarks.
Within the lakefront parks, the bridges are a nexus of circulation, bringing
together cyclists, skaters, runners and walkers of all ages and abilities.
Here, there are opportunities for meeting, gathering, entertainment and
refreshment. These bridges serve as landmarks in the lakefront parks.
From Lake Shore Drive, the bridges are opportunities to make bold civic
statements; to project the pride of place that has always characterized
Chicago. The rapid succession of bridges spanning the South Drive can
be a dynamic gateway to Chicago's downtown, museum campus and convention
centers. These bridges would serve as landmarks on Lake Shore Drive.
THE CONCEPT
The action of wind and water results in the natural beauty of waves. The
desire to connect Chicago's communities to its lakefront created the inspiration
for a 'wave of steel.' The team of Earth Tech, Daniel Dolan Architects
and Guajardo Associates propose the wave form for the pedestrian bridges
at 43rd, 41st, and 35th Streets. We believe this tidal image is appropriate
to Lake Michigan, the lakefront park, and Lake Shore Drive.
Approaching Lake Michigan from the neighborhoods, the wave presents a
graceful, inviting form. On the bridge and inside the wave, the form presents
a fluid and exciting canopy structure, each side alternating crests and
valleys, and framing views of the lake, downtown Chicago, and the flowing
traffic of Lake Shore Drive.
Driving North on Lake Shore Drive, the bridges will serve as a remarkable
gateway experience approaching downtown Chicago. From both directions,
the repetitive experience of the graceful form in a few short blocks will
give the effect of a sequence of waves cresting and crashing ashore.
THE BRIDGE
The structure of the bridges is the wave form itself: two long-span through-type
box trusses, comprised of welded, painted tubular steel members. A 25'
wide pedestrian walkway and bicycle path is centered within the curvilinear
structure, whose linear components rotate through two cycles of oscillation.
The North and South trusses are _ cycle out of phase, creating the unique
expression of a wave gaining momentum and ultimately cresting and breaking.
The walkway path surface is an athletic running surface tile, over a composite
deck, supported on wide flange steel beams spanning between tapered wide
flange outrigger beams. The outrigger beams carry the 45' width of the
truss system through an 18" diameter steel tube. The outrigger design
locates the structure at a 10' distance from the walkway edge, preventing
climbing and inhibiting potential vandalism. An 8" square cable net positioned
over the outrigger beams further restricts access to the structure. A
4' painted steel guardrail with braided stainless steel cables offers
protection for pedestrians and cyclists.
The waveform structure is very effectively illuminated by metal halide
up-lights mounted on each face of the outrigger beams.
The bottom chord of each truss is cambered 32" over the 210' spans. Massive
reinforced concrete piers support the spans at pin connections. The sculpted
piers at the East and West ends are inclined at 608 in opposing direction
of the cant of the wave at the support points.
Utility lines that currently run above the 35th Street bridge are proposed
to be integrated into the structure below the walkway. Highway signage
will be integrated into the bridge design as necessary.
THE SITE DESIGN
The lake side and neighborhood side landings are treated in unique ways.
At the lake side, the truss members engage the ramp and stairs. A landmark
plaza is proposed at the lake side of each bridge, generous enough for
gatherings, events and the safe conduct of pedestrian, skating and cycling
traffic. The plaza at the 35th Street bridge is anchored by a sculpture
of two abstracted sailing boats that appear to be sailing Lake Michigan
from the bridge perspective. The masts of these vessels are intended as
flagpoles. They are also intended to anchor the bridge experience on the
lake side, as the Stephen Douglas memorial and monument does on the land
side.
At the neighborhood side of each bridge, the structure is articulated
to lend a grand scale to the stairs and ramp approaching the span. The
top plane of the truss emerges as a dramatic canopy structure. For each
bridge, this approach will be designed specifically for the neighborhood
context.
The proposed bridges spanning South Lake Shore Drive will restore a sense
of civic pride and excitement to neighborhood use of the lakefront. The
design will generously accommodate large groups, families, cyclists and
skaters, and those with mobility impairments. The safety of pedestrians
and vehicle traffic alike will be top priority in developing the design.
