ARC is an interdisciplinary partnership working to facilitate new thinking, new methods, new materials and new solutions for wildlife crossing structures. Our goal is to ensure safe passage for both humans and animals on and across our roads. Situated at the intersection of science and design, we are a forum for creative collaborations and surprising synergies.

Concept design for the winning entry in the 2010 ARC International Wildlife Crossing Infrastructure Design Competition by HNTB with Michael Van Valkenburgh & Associates.

Image © HNTB & MVVA

Antelope, elk, moose and deer pose a familiar threat to motorists on North America's roads, in rural and suburban areas alike.

Image © Marcel Huijser, WTI

Vehicle-wildlife collisions have increased by 50% in the last 15 years, costing Americans more than $8 billion annually.

Image © WTI

Wildlife-vehicle collisions are a daily risk on the busy I-70 near Vail, Colorado, which bisects one of the most significant wildlife habitats in the Rocky Mountains.

Image © CDOT


A growing threat to people and to animals, collisions between wildlife and vehicles have been increased by 50 percent in the last 15 years. These accidents now cost Americans $8 billion every year.

ARC engages new thinking to design crossing structures that reconnect landscapes, safeguarding our wildlife populations, their habitats and our ecosystems. The right solution will reduce the number of collisions to save human and animal lives, at a lower cost. In supporting innovative approaches to these structures, we are working to improve highway safety for people and animals.

Wildlife-vehicle collisions pose a significant risk to a wide range of wildlife species and their populations throughout North America.

Image © Paula Mackay, WTI

Large mammals are not an uncommon sight on North American roadways and pose an increased risk to drivers and passengers in the event of a collision.

Image © Sandra Jacobson

Traffic signage in Colorado warns motorists to be alert for wildlife on the road in high-risk areas.

Image © Nina-Marie Lister

Images captured by research cameras stationed at wildlife crossing structures reveal the diversity of animals frequenting these structures.

Image © Tony Clevenger, WTI


Integrating science and design, ARC is changing the way people and animals see and understand our landscapes. We use interdisciplinary collaboration and international cooperation to address a continental problem at local sites and scales.

Wildlife crossings offer new opportunities for innovative research and educational outreach, such as infrared web-cameras that feed real-time visual data to handheld applications for scientists and the public alike.

Image © HNTB & MVVA

Wildlife crossing structures must serve two distinct groups of users: human and animal, each with different needs and perceptions. Successful designs integrate the needs of both.

Image © Janet Rosenberg & Associates

Educational outreach is an important facet of new design for wildlife crossings, in which guided observation, interpretation and conservation awareness are integral features.

Image © Olin Studio

Wildlife crossing structures must be designed to perform ecologically for a range of local target species and their habitats.

Image © HNTB & MVVA


Dynamic conditions demand flexible solutions and responsive materials. ARC explores new, sustainable infrastructure material strategies to respond to people, animals, and their shared environments.

Woodcore fiberglass is an innovative material proposed in this concept design for a wildlife crossing that is an iconic landmark for motorists, yet unremarkable to the colour-blind animals it serves.

Image © Janet Rosenberg & Associates

Models of the finalist concepts help to communicate the diversity of technological and design innovation in the 2010 ARC International Wildlife Crossing Design Competition.

Image © Olin Studio

Wildlife crossing structures advance leading-edge innovation in materials technology.

Image © Olin Studio

Construction of wildlife crossing structures demands innovation in building techniques, particularly in high-traffic locales where road closures must be minimized or avoided.

Image © HNTB & MVVA


ARC works to implement creative solutions for wildlife crossing infrastructure to benefit humans and animals. Our success depends on partners and projects across North America.

Join us, and become part of the solution.

Pillar-free designs using thin-shell concrete offer improved safety and beauty.

Image © Zwarts & Jansma Architects

Wildlife crossing overpasses in Banff, Alberta, Canada are the first in North America.

Image © Nina-Marie Lister

Eco-ducts are among more than 50 wildlife crossing structures in the Netherlands.

Image © Henri Cormont, RWS

The Netherlands was one of the first countries to deploy a network of wildlife crossings across the landscape.

Image © Henri Cormont, RWS

A concept design for a wildlife bridge using reclaimed timbers emphasizes the importance of sustainability and cost-effectiveness in the design wildlife crossings.

Image © Balmori Associates


Initiated by the Western Transport Institute at Montana State University and the Woodcock Foundation in New York City, ARC quickly drew additional support from the Edmonton Community Foundation, the Federal Highway Administration and the American Association of State Highway Transportation Officials. It continues to draw mounting support from federal and state agencies, universities, professional associations and non-profit organizations in the U.S. and Canada.


Steve Albert, Western Transportation Institute
Rob Ament, Western Transportation Institute
Terry Brennan, USDA, Forest Service
Alexandra Christy, Woodcock Foundation
Renee Callahan, Western Environmental Law Center
Tony Clevenger, Western Transportation Institute
Monique DiGiorgio, Western Environmental Law Center
Bethany Gravell, Rocky Mountain Wild
Mary Gray, Federal Highway Administration
Jeremy Guth, Woodcock Foundation
Neil Hetherington, Western Transportation Institute
Angela Kociolek, Western Transportation Institute
Harvey Locke, WILD
Steve Liebowitz, Woodcock Foundation
Nina-Marie Lister, Ryerson University
Ted Smith, Yellowstone to Yukon Conservation Initiative
Roger Surdahl, Federal Highway Administration – Central Federal Lands Highway Division

ARC Competition Finalists

Balmori Associates (New York) with StudioMDA, Knippers Helbig Inc.,
David Skelly, CITA, Bluegreen, John A. Martin & Associates, and David Langdon

HNTB Engineering with Michael Van Valkenburgh & Associates (New York)
with Applied Ecological Services, Inc.

The Olin Studio (Philadelphia) with Explorations Architecture (Paris),
Buro Happold (London) and Applied Ecological Services

Janet Rosenberg & Associates (Toronto)
with Blackwell Bowick Partnership, Dougan & Associates, and Ecokare International.

Zwarts & Jansma Architects (Amsterdam)
with OKRA Landscape Architects, IV-infra and Planecologie.

ARC Partners

American Association of State Highway and Transportation Officials
American Society of Landscape Architects
Animal Assistance Foundation
Canadian Consulate - Denver
Canadian Pacific
Center for Large Landscape Conservation
Colorado Department of Transportation
Coordinated Technology Improvement Program for:
Federal Highway Administration - Federal Lands Highway
National Park Service
Bureau of Indian Affairs
United States Fish and Wildlife Service
United States Forest Service
Crosbie Communications Ltd.
Defenders of Wildlife
Edmonton Community Foundation
Federal Highway Administration
Gallivan Media
Gravit-e Technologies
I-70 Coalition
Montana State University, Western Transportation Institute
National Park Service
Parks Canada
Research & Innovative Technology Administration
Rocky Mountain Wild
Ryerson University
United States Forest Service
University of Toronto
Western Environmental Law Center
Western Governors' Wildlife Council
Woodcock Foundation
Yellowstone to Yukon Conservation Initiative
ZAS Architects Inc.





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