Global climate change is the defining environmental issue of our time. From devastating wildfires to historic storms and rising seas, the effects are already being felt and will continue to get worse. According to NASA, sea levels could rise anywhere from 8 inches to 6.5 feet by 2100. Additional impacts include increased spread of diseases; extensive species extinction; mass human, animal, and plant migrations; and resource wars over dwindling food and water supplies. Furthermore, these impacts will disproportionately affect the world’s poorest and most vulnerable communities.
Sustained, meaningful commitments and actions to substantially reduce greenhouse gas (GHG) emissions from all sectors of our economy can help avoid the worst of these negative impacts. The benefits of these actions will be measured in lives saved and communities spared.
In 2015, the international community gathered in Paris, France, and agreed to a landmark cooperative framework for limiting global temperature rise to “well below” 2 degrees Celsius above pre-industrial levels. In order to meet this goal, GHG emissions will need to peak by 2020 and fall to zero by 2050. This is an immense goal, but also achievable.
Landscape architects are helping to shift us to a carbon neutral future. Landscape architects plan and design dense, walkable communities that reduce emissions from transportation and sprawl. They make the built environment more energy and carbon efficient with strategies like green roofs, water-efficient design, and use of sustainable materials and construction practices. They defend and expand carbon-sequestering landscapes such as forests, wetlands, and grasslands, helping to drawdown atmospheric carbon dioxide. All of these efforts also enable communities to better adapt to climate change and improve their resilience.
The threats posed by climate change are immense, and there is no single strategy that will solve the climate crisis on its own. Instead, mitigation requires an “all hands on deck” approach as we seek to reduce GHG emissions wherever possible. Achieving a carbon neutral future will only come about through the cumulative effect of countless individual actions. Every one of those individual actions counts.
With urban infrastructure in urgent need of revitalization, it’s time for new thinking about how the civic realm can better serve public needs and meet environmental goals.
The ASLA Chinatown Green Street, in downtown Washington, D.C., is a unique demonstration project that on one city block combines advanced “green,” “complete,” and “smart” street concepts. It addresses comprehensively the pressing problems of stormwater runoff and pollution, energy inefficiency, and pedestrian safety. At the same time, it enhances the vitality of the public realm and reflects cultural sensitivity, while demonstrating the ability of cutting-edge green infrastructure to support the goals of property and business owners.
When the Chinatown Green Street demonstration project is complete, cities everywhere will be able to study its strategies and outcomes and draw lessons that can improve our understanding of how a reimagined infrastructure can profoundly enhance the quality of 21st-century American life.
The American Society of Landscape Architects (ASLA) proudly announces the 25 winners of the ASLA 2018 Professional Awards. Selected from 368 entries, the awards recognize the best of landscape architecture in the general design, analysis and planning, communications, research and residential design categories from the United States and around the world.
The winners will receive their awards at the ASLA 2018 Annual Meeting and EXPO in Philadelphia on Monday, October 22, at the Pennsylvania Convention Center.
Winning projects are designated as either an honor award or an award of excellence, which is the highest possible distinction.
General Design Category
Award of Excellence
Brooklyn Bridge Park: A Twenty Year Transformation, Brooklyn, New York
by Michael Van Valkenburgh Associates (Brooklyn, New York) for Brooklyn Bridge Park
Chicago Riverwalk | State Street to Franklin Street, Chicago
by Sasaki (Watertown, Massachusetts) and Ross Barney Architects (Chicago) for the Chicago Department of Transportation
Iqaluit Municipal Cemetery, Iqaluit, Nunavut, Canada
by LEES+Associates (Vancouver, B.C., Canada) for the City of Iqaluit
Legacy and Community: Juxtaposing Heritage and Invention for Duke University’s West Campus, Durham, North Carolina
by Reed Hilderbrand LLC Landscape Architecture (Cambridge, Massachusetts) for Duke University
Longwood Gardens Main Fountain Garden, Kennett Square, Pennsylvania
by West 8 Urban Design & Landscape Architecture (Rotterdam, Netherlands) for Longwood Gardens Inc.
Re-Envisioning Pulaski Park, Northampton, Massachusetts
by STIMSON (Cambridge, Massachusetts) for the City of Northampton
Tippet Rise Art Center, Fishtail, Montana
by Oehme, van Sweden | OvS (Washington, D.C.) for Tippet Rise Art Center
Tongva Park and Ken Genser Square, Santa Monica, California
by James Corner Field Operations LLC (New York) for the City of Santa Monica
Walker Art Center Wurtele Upper Garden, Minneapolis
by Inside | Outside + HGA (Minneapolis) for the Walker Art Center
Analysis and Planning Category
Award of Excellence
A Colorado Legacy: I-25 Conservation Corridor Master Plan, Douglas County, Colorado
by Design Workshop (Aspen, Colorado) for The Conservation Fund
Extending Our History, Embracing Our Future, Madison, Wisconsin
by SmithGroup (Ann Arbor, Michigan) for University of Wisconsin-Madison
From Pixels to Stewardship: Advancing Conservation Through Digital Innovation, Austin, Texas
by Andropogon Associates Ltd. (Philadelphia) for the Shield-Ayres-Bowen Family
Iowa Blood Run Cultural Landscape Master Plan, Madison, Wisconsin
by Quinn Evans Architects (Madison, Wisconsin) for Iowa Department of Natural Resources (Todd Coffelt, Michelle Wilson, John Pearson, Frank Rickerl, Pat Schlarbaum, and Kevin Pape), State Historical Society of Iowa (Jen Bancescu, Doug Jones, Susan Kloewer, and Steve King), Iowa Office of the State Archaeologist
Willamette Falls Riverwalk, Oregon City, Oregon
by Snøhetta (New York) for Project Partners: Oregon Metro, City of Oregon City; Clackamas County; State of Oregon; PGE Falls Legacy LLC
Award of Excellence
100 Years of Landscape Architecture at The Ohio State University
by Landscape Architecture Section, Knowlton School, The Ohio State University (Columbus, Ohio)
Homeplace: Conversation Guides for Six Communities, Rebuilding After Hurricane Matthew
by NC State University Coastal Dynamics Design Lab (Raleigh, North Carolina) for the Hurricane Matthew Disaster Recovery and Resilience Initiative (HMDRRI)
Marnas: A Journey through Space, Time, and Ideas
by Anne Whiston Spirn, FASLA
VanPlay: Plan to Play
by Design Workshop Inc. (Denver) for the Vancouver Park Board
Atlas for the End of the World – Atlas for the Beginning of the Anthropocene
by Richard Weller, ASLA, University of Pennsylvania (Philadelphia)
Design with Dredge: Resilient Landscape Infrastructure in the Chesapeake Bay, Baltimore, Maryland
by Mahan Rykiel Associates (Baltimore, Maryland) for the Maryland Port Administration
Urban Aquatic Health: Integrating New Technologies and Resiliency into Floating Wetlands, Baltimore
by Ayers, Saint, and Gross (Baltimore) for the National Aquarium
Residential Design Category
Award of Excellence
Balcones Residence, Austin, Texas
by Word + Carr Design Group (formerly known as Mark Word Design) (Austin, Texas)
Sustaining A Cultural Icon: Reconciling Preservation and Stewardship in a Changing World, Newport, Rhode Island
by Reed Hilderbrand LLC Landscape Architecture (Cambridge, Massachusetts) for Dorrance Hill Hamilton
Yard, Portland, Oregon
by 2.ink Studio (Portland, Oregon) for the Key Development Group
The Landmark Award recognizes a distinguished landscape architecture project completed between 15 and 50 years ago that retains its original design integrity and contributes significantly to the public realm of the community in which it is located.
The Landmark Award
From Weapons to Wildlife: The Rocky Mountain Arsenal National Wildlife Refuge Comprehensive Management Plan (Douglas County, Colorado)
by Design Workshop Inc. (Denver, Colorado)
The professional awards jury included:
Mark A. Focht, FASLA, Chair, New York City Parks and Recreation, New York City
Gerdo Aquino, FASLA, SWA Group, Los Angeles
Anita Berrizbeitia, ASLA, Harvard Graduate School of Design, Cambridge, Massachusetts
Christian Gabriel, ASLA, U.S. General Services Administration, Washington, D.C.
Terry Guen-Murray, FASLA, Terry Guen Design Associates, Chicago
Dale Jaeger, FASLA, WLA Studio, Athens, Georgia
Sam Lubell, Journalist, New York City
Patrick Phillips, Urban Land Institute, Washington, D.C.
Barbara Wilks, FASLA, W Architecture + Landscape Architecture LLC, New York City
For the selection of the Research Category, the jury was joined by M. Elen Deming, FASLA, North Carolina State University, Raleigh, North Carolina, for the Landscape Architecture Foundation (LAF) and Ashley Steffens, ASLA, College of Environment and Design, University of Georgia, Athens, Georgia for the Council of Educators in Landscape Architecture (CELA).
Transportation infrastructure is a significant part of the landscape. The original social network, it connects us to families and friends, jobs and businesses, education and recreation, and is a vital part of the public realm. However, conventional, car-centric approaches to transportation have contributed to negative outcomes for people and the environment:
Highways and interstates have been built through the middle of cities and neighborhoods, dividing communities and creating corridors of air, noise, and visual pollution. Poor, minority, and otherwise-disadvantaged communities often bear the brunt of these costs.
In too many communities, access to jobs, services, and social networks is dependent upon ownership of a costly personal vehicle. Many residents of sprawling suburban and rural areas are trapped in “transit deserts” without viable alternatives to car ownership, limiting their access to jobs, food, and even medical care.
Infrastructure has been built in vulnerable areas using design approaches that do not take the effects of climate change into account, increasing risk of failure and stranding evacuees in increasingly-frequent extreme weather events.
Transportation infrastructure can be a gateway for invasive plants that crowd out native plant communities and damage sensitive ecosystems.
Stormwater runoff from streets and other paved surfaces is laden with pollutants from cars, leading to downstream pollution and degraded water quality in streams, rivers, lakes, and estuaries.
These outcomes are not inevitable, however. Sustainable transportation is:
Low-emission: Sustainable transportation systems don’t contribute to climate change; instead, they encourage low-emission modes of transportation such as mass transit, biking, or walking. Sustainable land use practices such as transit oriented development facilitate multi-modal systems where residents can easily walk or bike to meet basic daily needs. Landscape architects plan regions, cities, and neighborhoods and design streets that support widespread adoption of low-emission transportation options.
Active: A lifestyle organized around human-powered transportation choices such as walking and biking is healthy. A 2016 report found that walkable, transit-oriented communities increased physical fitness and mental health. Residents of such communities were also more likely to meet or exceed daily physical activity recommendations. Landscape architects encourage active transportation by designing safe, pleasant routes for walking and biking.
Equitable: Access to such healthy, sustainable transportation options should be viewed as a right. All residents—regardless of their income, race, age, disability, religion or national origin—should have access to affordable, safe, accessible, multi-modal transportation options that allow them to fully participate in the community. Landscape architects facilitate community-driven planning, policy making, and design that includes all members of the community, especially those most affected by poverty, communities of color, and historically-marginalized communities.
Resilient: Extreme weather events can easily shut down transportation networks. Multi-modal transportation systems are resilient to the uncertainties posed by climate change, such as rising temperatures, more frequent and intense storms, and sea level rise. Landscape architects design systems with multiple, interconnected transportation options that create redundancy and flexibility, qualities that help communities evacuate and rebuild quickly in the face of natural disasters.
Ecological: A sustainable transportation network is ecological, working with natural systems to capture and filter stormwater, reduce flooding, support pollinator species, strengthen biodiversity, and protect wildlife populations. With green infrastructure, wildlife crossings, pollinator highways, and environmentally-sensitive roadway alignment, design, and construction, landscape architects integrate nature into our transportation networks, reaping the benefits of ecosystem services while minimizing conflict between humans and wildlife.
Beautiful: As a major component of our landscape and public realm, transportation infrastructure should be beautiful, inviting, and memorable. Thoughtful design creates durable, lasting spaces that forge community identity, equity, and ownership. Landscape architects ensure that transportation infrastructure contributes to the aesthetic value of the built environment.
A special thanks to our expert advisory panel for their guidance: Diane Jones Allen, D. Eng, ASLA, PLA, associate professor and program director of landscape architecture, University of Texas, Arlington, and principal, DesignJones LLC; Jean Senechal Biggs, ASLA, senior project manager, DKS Associates; and Robert Loftis, PLA, ASLA, associate landscape architect, MRWM Landscape Architects.
A High Line for Houston?– Texas Medical Center News, 8/1/18
“Landscape architect James Corner will bring his vision to TMC3’s Helix Park.”
San Francisco’s Imposing Transit Center Ready to Roll at Last– The San Francisco Chronicle, 8/6/18
“For the past decade, the transit center that will replace San Francisco’s Transbay Terminal has been the subject of grand plans and political controversies, struggles to stay on schedule and squabbles over costs.”
Transforming Tulsa, Starting with a Park– The New York Times, 8/10/18
“The Olmsted-style transformation of 66 acres in the central city is now Gathering Place, a much-anticipated $465 million park that opens Sept. 8 as one of the largest and most ambitious public parks ever created with private funds — and the latest example of deep-pocketed citizens rebuilding cities through projects they perceive to be in the public good.”
Robert Gibbs, ASLA, is president of the Gibbs Planning Group, which has advised and planned commercial areas in some 500 town centers and historic cities in the U.S. and abroad. Gibbs is a charter member of the Congress for New Urbanism, a lecturer at the Harvard University Graduate School of Design, author of Principles of Urban Retail Planning and Development, and co-author of eight books.
There’s going to be hundreds of stores closing. In 2018 already more stores have closed than in 2017. What this means for the industry: a lot of retailers are moving stores into downtowns.
Research shows millennials and other shoppers want the experience of being in an urban environment rather than just buying a pair of pants online. So mall closures are good for cities. You’re going to see retailers moving back into cities, and many Internet-based companies opening brick and mortar stores.
Warby Parker, an online eyeglass company, is opening physical stores, and Amazon’s opening two hundred bookstores in cities. Internet-based companies have found when they open a brick-and-mortar store, their online sales go up 10-15 percent.
About a fourth-to-a-half of malls will close in the next five to ten years.
The malls that are going to be sustainable — after what I call post-mall period — will be ones well-positioned, with really strong demographics — either high-end demographics or strong middle-class demographics. They’ll have good locations with access to regional transportation.
Only malls that keep their department stores will survive. A mall cannot function without department stores. So when they lose all but one or all of their department stores, they have to close.
The other factor for successful malls is to be mixed use and incorporating residential, office, and civic space into their properties. Just being a retail destination alone is not sustainable right now.
Transitioning to mixed use is not that hard to do because malls were built with more than twice the parking that is necessary by today’s standards. So, about half of the parking lots can be converted into other land uses.
The Grove in Los Angeles and 3rd Street Promenade in Santa Monica offer highly-stylized versions of urban forms – in the case of the Grove, an old European urban downtown, and 3rd Street Promenade, the American main street. Are successful contemporary shopping districts about re-using familiar urban forms in new ways?
Oh, very much so. The traditional grid or traditional straight main street is the best format for the new town centers being developed. There has been a lot of experimentation with curvilinear forms with parallel streets, and those haven’t worked too well. It has to be a simple main street.
We find the best shopping districts are only about a quarter of a mile long, about 1,200 feet. If you have a longer corridor, then we break it into sections. Where they come together, we anchor it with some form of civic or retail space. So, just the old fashioned street works the best, or with the very-slight deflection.
Some background on promenades like the one on 3rd Street in Santa Monica: In the 1960s and 70s, many downtowns declined and lost significant market share to large suburban shopping malls. In a well-intended response, over 250 downtowns imitated shopping centers and closed their main streets to vehicles in order to create outdoor pedestrian malls. Kalamazoo, Michigan, and Fresno, California, were pioneers in this experiment.
Unfortunately, all but ten of the pedestrian malls were a failure (the ones that survived are mostly in college towns). Most of the downtowns declined even further and remained almost entirely-vacant for decades. Even Santa Monica’s Third Street promenade and Miami Beach’s Lincoln Road were initially overwhelming failures. Without department stores, the pedestrian malls lacked the necessary critical mass of shopping to justify the inconvenience of parking in remote decks. Small retailers cannot afford much advertising and rely on drive-by impulse traffic for sales.
We have been advising several downtowns, including Fresno, to re-open their streets to cars with generous parallel parking. The key is to implement modern traffic-calming measures, an attractive public realm, and realistic codes to enable walkability and cross-shopping.
What are the core components of a successful retail district layout? How do you get density, inter-connectivity, and scale right? On the one hand, there is the model of Soho in NYC, with its grid layout, but you also have the standard outlet mall, defined by an arterial form.
A fairly straight or simple, deflected street works the best. It’s essential a retail district have multiple uses. All four land uses are best: commercial, office, civic, and residential. It’s also essential to have a good public realms in these centers and appropriate sidewalks for the type of transect that it is, whether it be a town or a city or hamlet. There has to be a good public space, such as a square or a plaza.
Retailers have higher sales and are willing to pay higher rents when they’re located on a square. We have found retailers who will give up exposure on the end caps of a street in exchange for being on the square, because that is where more people are and where they will achieve higher sales.
It’s really important for landscape architects to embrace the public realm, to be strong advocates for parks and plazas, a nice streetscape.
Retail has been described as a tool for revitalizing small town main streets and the downtowns of major cities. What else needs to come with retail to make the revitalization effort work?
Retail alone can’t revitalize a downtown. One of the most important elements is transportation. Streets have to be calmed from highways into real, walkable streets. Many downtowns are suffering just for lack of on-street parking or because the streets are too wide and traffic is too fast.
In addition, it is important to have a strong civic component: the library, city hall, courthouses should be in the downtown, not in the suburbs. For example, we find a good library can bring an average of 1,200 people per day — that’s as many as a good department store.
High density residential and office space are important as well. The Urban Land Institute (ULI) recently did a study that found every office worker directly supports twenty-five square feet of retail and restaurant space. If we can get office workers downtown, you can share parking with the office, because of off-peak times with retail.
So downtowns have to return to being real mixed-use, urban, walkable centers.
What is the role of landscape architecture in successful retail environments?
The leaders of many shopping center developers we work with are landscape architects. Many of our clients are former landscape architects or practicing landscape architects.
More than the engineers, architects or the MBA types, we find landscape architects have a holistic approach, and we enjoy working with them. They understand the physical realm and design, but also politics, the environment, and a little bit of engineering and economics.
More broadly, the landscape architect working on a retail environment has to advocate for good place-making: a nice public realm — public squares of plazas; traffic calming; and the right height-to-width ratios on the streets so streets aren’t too wide.
Do trees and other green features increase sales?
Trees are really essential for a competitive shopping district. There was a study by Kathleen Wolfe that indicated trees increase price elasticity by 9-12 percent. In other words, people feel comfortable paying up to twelve percent more for the same product if they purchase in a well-landscaped place with nice streets. Also, when properly located, street trees keep people in the downtown district longer. They feel more relaxed and are more likely to spend more money.
We’re working in Palm Desert, California, and found the shady side of the street has significantly higher sales and rents than the sunny side of the street. We’re redesigning the street to be asymmetrical, so that the sunny side will have a wider sidewalk so that we can put in a triple bosque of trees for shade. In this case, the shade is directly responsible for higher sales in retail. Research indicates that, too.
The one pet peeve I have is that many landscape architects — including myself (as I’ve done this) — tend to put street trees on an arbitrary grid, 22 feet or 28 feet on center, whatever. Very often the trees end up blocking a merchant’s storefront, sign, or window display.
We believe developers and communities should put in a lot of street trees but use common sense when locating them. Street trees should be on the property lines of commercial buildings rather than in middle and in front of buildings.
Street trees are very important for retail sales, and that’s been proven. Also, for residential values, there are studies that indicate home values are much higher on shady streets than streets without trees.
Urban stores of retailers like Bonobo, Apple, and others are essentially show-rooms, where you try out goods and then purchase online and receive products by mail. What other technology-enabled retail innovations do you see coming to the built environment?
Technology has been good and bad. One negative is many online manufacturers are selling directly to the customers, and they are not sending merchandise to small retailers. They’re cutting the retailer out of the better merchandise, which is hurting their sales.
A positive is many stores are getting rid of cash registers so you can walk in and out.
Another positive: Store are becoming warehouse and distribution centers. Department stores are now places where you can do a same-day pick-up of an order you made online. Physical stores are becoming return centers for Amazon and other online sites. For example, Kohl’s is partnering with Amazon to be a return center. This helps bring people to that shopping district who ordinarily wouldn’t go there. They’re going to make a return and then while they are making their return, they will go to restaurants or other shops.
Climate change is intensifying the negative impacts of standard development practices and is putting people and communities across the United Sates at risk. The American Society of Landscape Architects (ASLA) convened an interdisciplinary Blue Ribbon Panel on Climate Change and Resilience in September 2017, and this week ASLA released a blueprint for helping secure a sustainable and resilient future that summarizes the panel’s work and recommendations.
Promote holistic planning and provide multiple benefits
Take into account environmental justice, racial and social equity
Reflect meaningful community engagement
Regularly evaluated and reviewed for unintended consequences
Address broader regional issues as well as local and site-specific concerns.
Smart Policies for a Changing Climate also found that:
Designing and planning in concert with natural systems promotes resilience, capitalizes on the benefits of natural systems and provides greater long-term return on investment.
Key strategies include use of green infrastructure, native plants, urban and suburban tree planting plans, and healthy soil management practices.
Compact, walkable, and transit-oriented “smart growth” communities reduce energy use and are climate smart.
Special attention must be paid to vulnerable communities in coastal and inland flood plains and underserved and low-income communities.
Transportation should be considered critically as not only a connection point between home to work/services, but also as a source of greenhouse gas emissions, and a contributor or detractor to a community’s appearance and function in light of a weather event.
Agricultural systems must be addressed because they are being stressed by unsustainable farming practices and farmland is being lost to expanding development and sprawl.
“Our nation, states, counties, and cities are looking for solutions to mitigate the risks from the changing climate and extreme weather events,” said Nancy C. Somerville, Hon. ASLA, ASLA executive vice president and CEO. “With this report, landscape architects and their design and planning colleagues forward public policy recommendations that can make communities safer while taking climate change and existing natural systems into account.”
ASLA released the report at an evening reception and candid discussion yesterday with Somerville, and ASLA Blue Ribbon Panel members Adam Ortiz, director for the Department of the Environment for Prince George’s County, Maryland, and Diane Jones Allen, program director for Landscape Architecture, the College of Architecture, Planning and Public Affairs at the University of Texas at Arlington and principal landscape architect with DesignJones LLC.
We have provided a platform for landscape architects, public officials, and other design and planning professionals to share their views on how to help communities adapt to climate change through smart design policies. Go to https://climate.asla.org.
The Blue Ribbon Panelists included a diverse range of practitioners, experts and stakeholders with different levels of experience working in different aspects of geographic and technical design. They are:
Vaughn Rinner, FASLA, SITES AP, ASLA Immediate Past President, Chair;
Armando Carbonell, FAICP, Senior Fellow and Chair, Department of Planning and Urban Form, Lincoln Institute of Land Policy;
Mark Dawson, FASLA, Managing Principal, Sasaki Associates Inc.;
Tim Duggan, ASLA, Founder, Phronesis;
Ying-yu Hung, ASLA, Managing Principal, Principal, SWA, Los Angeles Studio;
Dr. Dwane Jones, Ph.D., Director of the Center for Sustainable Development + Resilience at the University of the District of Columbia;
Diane Jones Allen, ASLA, Program Director for Landscape Architecture, the College of Architecture Planning and Public Affairs at the University of Texas at Arlington and principal landscape architect with DesignJones LLC;
Adam Ortiz, Director for the Department of the Environment for Prince George’s County, Maryland;
Nancy Somerville, Hon. ASLA, SITES AP, Executive Vice President and CEO, ASLA; and;
Dr. Jalonne L. White-Newsome, Ph.D., Senior Program Officer, Environment, The Kresge Foundation.
Some quotes from panelists on the importance of adopting effective public policies and landscape architecture design solutions:
“The plans we’re going to have in the future to deal with living with water have to be more realistic. We have to live with the acknowledgement that there will be hurricanes and areas that naturally want to flood. How do we build differently as opposed to thinking we can keep water out?”
Diane Jones Allen, ASLA Program Director for Landscape Architecture, the College of Architecture, Planning, and Public Affairs at the University of Texas at Arlington
“We have a number of antiquated policies within governmental structures. Reevaluating them every five years or so would help us to reflect what is currently happening and to better project how we should design communities to be able to proactively respond to such changes and challenges.”
Dr. Dwane Jones, Ph.D. Director of the Center for Sustainable Development + Resilience at the University of the District of Columbia
“All public projects really have to be interdisciplinary. They have to incorporate the local culture, the local economy, forward-thinking design concepts, as well as good engineering. All that together, in a very thoughtful way that respects the complexity of our society, is a way to make a sustainable project that people enjoy and love.”
Adam Ortiz Director for the Department of the Environment for Prince George’s County, Maryland
“One of the things we need to be doing is do a lot more experimentation. Sometimes you just need to be able to try things and see if that solution can take you forward. If it’s not a good solution, let’s try something else. That kind of creativity and ideas is really what innovation is all about.”
Vaughn B. Rinner, FASLA, SITES AP Immediate Past President, American Society of Landscape Architects
“Our standard development practices are not sustainable, but when we understand and work with natural systems, we can build safer and healthier communities.”
Nancy C. Somerville, Hon. ASLA. SITES AP Executive Vice President and CEO, American Society of Landscape Architects
“My hope is that we embed true kinds of community engagement, justice, and equity into our focus on climate change and resilience. We need to really do that in a way where it’s not so scientific. The social engineering matters as well. It’s what you’re doing in your profession that impacts people and makes those impacts equitable.”
Dr. Jalonne L. White-Newsome, Ph.D. Senior Program Officer, Environment The Kresge Foundation
Why retrofit cities and suburbs with green infrastructure? Re-inserting the landscape back into the built environment helps us strike a better balance with nature, boost neighborhood health, and solve stormwater management problems. In a session at the Congress for New Urbanism (CNU) in Savannah, Georgia, a landscape architect, an urban designer, and a civil engineer offered fresh takes on why green infrastructure is so valuable.
According to landscape architect Kevin Robert Perry, ASLA, founder of Urban Rain Design, the issue is the sheer amount of impervious surfaces, the oceans of asphalt in our cities and suburbs, which can account for half of the built environment. “We need to get more water into the ground.” He said communities should take a “decentralized, natural approach” to getting more stormwater off pavement and into the ground, where it can recharge underlying aquifers.
In increasing levels of optimization, communities can maximize landscape along streets; increase their tree canopies; create park-like streets, sidewalks, and driveways; scale up networks of green, complete, streets; or build an “entire green envelope, covering buildings and streets” across the entire city or suburb.
But Perry noted the need to keep actual green infrastructure solutions simple and low-cost. His well-known Siskiyou Green Street in Portland, Oregon, cost just $20,000.
Ellen Dunham-Jones, professor of urban design at Georgia Tech and author of Designing Suburban Futures, and her students collaborated with the Atlanta city government, as it begins to realize its vision of a new city design, which is rooted in Atlantans’ love of the legacy of Martin Luther King, Jr, who was born and raised there, and the city’s luxuriant tree canopy, which covers some 45 percent of the city. The design paints a picture of equitable growth in an urban forest.
Dunham-Jones and her students began to examine how a city expecting to triple in population could still maintain its tree canopy, with all its health and stormwater management benefits.
Beyond concentrating development in centers and corridors, so as to protect old growth trees, another way to do this is to retrofit trees into neighborhoods through novel regulations.
Using the Cascade Road neighborhood, a majority African American community in southwest Atlanta, as a study site, she sent out seven pairs of students to identify some options. Her team recommended re-planting or relocating trees off private property into nearby public conservation easements, and “fee-simple” donations of wetlands and flood zones that have mature trees to the city government.
“The idea is to move more trees into the public realm. We can protect them better if they are on public property; and we can also protect the rights of private property owners.”
She said Atlanta hopes to enshrine many of these ideas in a new, more stringent “nature ordinance,” designed to replace the current tree ordinance, which has relatively lax rules on tree removal.
And Paul Crabtree, a civil engineer who runs the Crabtree Group, concluded that those who are forging innovative green infrastructure solutions in communities should be considered “shock troops, highly-skilled soldiers on the front line, taking heavy casualties, even when successful.” After much persuasion and many grants, he managed to create an innovative “tree zipper” in the middle of a street in Ojai, California.
Over four days of the Congress for New Urbanism (CNU) in Savannah, Georgia, autonomous vehicle (AV) optimists and pessimists presented their hopes and fears about the coming technology-driven transportation revolution. AVs can either increase speed and efficiency and reduce transportation costs, or create more congestion and sprawl, kill off public transit, and increase transportation inequities. AVs will be coming in the next few years, or won’t be seen in most places for a few decades. AV ride share companies like Uber, Waymo, and Lyft only have our best interests at heart, or they are self-serving and want to remake streets to optimize for AVs, to the detriment of other modes of transit. AV companies can be given a long leash and work with state or local governments in partnership, or these companies need to be closely regulated.
Amid the broad debate by planners, landscape architects, architects, and traffic engineers that happened across multiple sessions, possible benefits and dangers of AVs became clear, as did the shape of solutions to possible problems.
Gerry Tierney, director of Perkin + Will’s Smart Mobility Lab, thinks AVs will enable cities to create narrower car lane widths — just 8 feet instead of the usual 10 or 12. AVs are expected to communicate with each other to increase efficiency and speed, forming a platoon. With this scenario, “headway between vehicles will be shortened, increasing the capacity of streets by two or three times.”
Tierney thinks we can give that extra road space created by AV platoons over to the public realm. “We can create new mixed-use lanes for bikes, e-bikes, scooters, and e-scooters, along with widened sidewalks, and green infrastructure.”
In an analysis of San Francisco’s streets, Tierney found that green space in transportation networks could be increased by 42 percent with the reduced lanes for AVs, spreading 1.3 Golden Gate Park’s amount of greenery throughout city streets.
Car companies will soon offer subscription services so that car ownership — and the number of cars on the road — will decrease. Today, the average car is only used 4-5 percent of the time. With subscription services for AVs, utilization rates will increase to 96 percent. “Fleet size can be reduced but carry the same number of people.”
AVs could be parked in towers, reducing the need for homeowners to purchase a parking lot, which can add 24 percent to the cost of a unit in a city like San Francisco. Parking will plummet, freeing up space for Amazon deliveries and reducing congestion.
According to transportation planner Patrick Seigman, some 80 percent of the cost of taxis are the driver. As such, AV rideshare “taxis” — like Uber or Lyft — will cause the “cost of taxis to plummet.” With buses and trains powered by autonomous technologies, the cost of transit could also further decrease.
Autonomous rapid transit (ART) could further increase road capacity. Tierney imagines 20-seat shuttles on dedicated lanes. Siegman pointed to self-driving shuttles now in use in Switzerland and Las Vegas, which have a top speed of 25 miles per hour. Instead of a driver, they have a conductor who can only push a stop button.
Peter Calthorpe, a leading planner, said that “autonomous vehicles will mean death for cities.” He said single-passenger ride share travel 35 percent more miles than regular vehicles, and AV shared taxis can be expected to travel 30-60 percent more miles, and AV single taxis, 50-90 percent more miles. “Dedicated lanes for AVs will only increase sprawl as private vehicles travel farther.” Furthermore, given speed is of the essence, “people won’t share — there’s no time advantage to sharing.” With AVs, “vehicle miles traveled will double and roads will become impassable.”
Tierney worried that AVs could create a “two class system” — those with access to AVs and those without. “We could imagine people playing video games in a Mercedes Benz subscription AV while those who can’t afford are then starved of transit options.”
Architect and urban design Kevin Klinkenberg, said in Savannah, Georgia, Uber and Lyfts can be expensive if you aren’t just taking a short trip downtown. “Even if AVs cut the cost by half, there is still a large section of the population who won’t be able to afford them.”
Transit rides are already subsidized and are losing money in many places; AVs can therefore put further pressure on strapped transit systems, speeding up the killing of routes.
He also wondered who will pay for all the beautiful, green, multi-modal, AV-optimized streets, so often seen in renderings? “With AVs, where will the money come from?” Most cities are already completely strapped and can’t fix potholes on time.
Christopher Fornash, a transportation engineer with Nelson/Nygaard, thinks it will be 20-30 years before we see “pervasive autonomy.” He imagines autonomous cars, buses, and trains, with inter-connections. But Tierney wonders where pedestrians will go in this system? “If you have AV through-ports for efficiency, how does a pedestrian cross the street? I hope not bridges.”
Fornash worries that AV companies have already pre-empted city regulation of AVs, because in 10 states, “it’s too late, city right of ways are now in state control. AV companies now have the ability to use streets on their own terms.”
According to Klinkenberg, the transportation system is controlled by a small number of engineers, policymakers, and companies. “It’s not open to political or economic feedback. There will be the same result if you add AV to the mix. We’re just swapping new technology into the same system.”
Tierney said it’s important for planners and policymakers to “design around community values and prioritize road access. We need to reverse engineer these systems and design for what we want. There is an opportunity to reclaim cities from the car.”
Alex Engel, program manager with National Association of City Transportation Officials (NACTO), which just released the smart Blueprint for Autonomous Vehicles, said “we can’t let the private sector dominate the conversation about AVs. We need to produce public policies that shape outcomes. We need to use good data and code the curb.”
Calthorpe called for instead investing in autonomous rapid transit (ART), like bus rapid transit (BRT) but with more nimble vehicles, which is already up and running in Zhuzhou, China. “If ART have dedicated lanes, autonomous vans or buses could be 30 percent faster than BRT and cost 80 percent less because there would be no drivers.”
Siegman calls for restoring control of streets back to local areas, giving cities and communities the right to “charge right prices for curb access and parking, and driving on streets.”
As an example, he pointed to San Francisco airport, which now charges taxis and ride share a $7.60 fee for accessing the curb for drop-offs and pick-ups in the most convenient zone, but half the price for access to a less convenient spot at the top of a garage.
Cities could charge riders of AVs for pick-ups and drop-offs in order to finance equitable access to public transit, including low-cost ART, and green street improvements.
“By 2030, there will be more than 75 million older Americans aged 65 and up,” said Danielle Arigoni, director of livable communities at AARP, in a session at the Congress for New Urbanism (CNU) in Savannah, Georgia. This older population will need more livable, age-friendly communities that can meet their needs by offering affordable housing where they can age in place, accessible mass transit and walkable neighborhoods, and daily sources of civic and social engagement and meaning.
AARP recently released comprehensive new survey data, the first major data set in four years. They found that 8 out of 10 older adults want to stay in their home as they age. However, only 46 percent believe they can actually age in place because of accessibility, affordability, and lifestyle issues.
Arigoni thinks communities need to work much harder to keep older residents in their communities. “Older adults are an asset — they are the ‘experienced class’ who add value with their purchasing and voting power. They volunteer their expertise and are entrepreneurial.”
So what can communities do to better keep older adults? Arigoni said diversifying the housing stock is important.
In too many places, when an older person can no longer drive, it’s like a “receiving a serious medical sentence.” Being stuck at home means isolation, which has the health impact of “smoking about 15 cigarettes a day.” The health impacts are particularly acute for older adults.
Home sharing is a way to solve this problem. Some 15 percent of older adults already do this in order to get help with transportation, but also for companionship or economic reasons.
Accessory dwelling units (ADUs), sometimes described as “granny flats or mother-in-law suites,” which are independent units on the lot of a single family detached home, are another way to provide nearby support. Some one-third of older adults would consider building an ADU or living in one, but only 7 percent do, in part because “lots of regulations prevent them.”
8 out of 10 older adults want safe streets, which is why AARP has been supporting walkability audits and pursuing complete street policies at the state and local levels.
84 percent of older adults drive themselves, while 38 percent walk and 10 percent use ride share. Some 43 percent have used Uber, Zipcar, Lyft, and the like; some 55 percent are not likely to use. “What’s preventing them? 50 percent cited safety and privacy issues. Another cohort lacked the technology or knowledge. And 17 percent had disability concerns.”
Arigoni thinks the vast majority of accessibility issue with ride sharing can be resolved. “We have to solve the disability component — the last few feet of ride sharing.”
To promote livable communities, particularly for older adults, AARP has put its considerable advocacy muscle behind Measure M in California, a $120 billion bond for public transit, which subsequently passed.
And they partnered with the World Health Organization (WHO) to create the AARP Network of Age-friendly States and Communities, which 246 communities and two states have joined. In 2017, AARP gave 90 communities grants to undertake a 5-year age-friendly community planning process designed to result in a concrete action plan.
In Macon-Bibb, Georgia, which was the first city to sign onto the network, the age-friendly planning process was a “catalyst for things we wanted to accomplish,” said Myrtle Habersham, a consultant and AARP executive committee member.
Macon-Bibb assembled a 28-person age-friendly council, went out into the community, and identified priorities, like redesigning the city’s 2nd street corridor, creating new bus routes and mixed-income housing. The team also invested in revitalizing decrepit parks. “At the beginning of the process, we started with 30 volunteers and now there are 200,” said David Pilgrem, with AARP who was involved in the effort.