Corridors & Crossings

Creating Safe Passage for People and Wildlife

Animals need to move. By doing so they shape and maintain the landscapes in which they live by transporting seeds, pollinating plants, and controlling pests. They also help shape the cultural identities of the people who live in these landscapes.

We use science such as spatial models and maps to help planners identify how and where animals move across the landscape, and how people help or hinder that movement. We apply this knowledge to support on-the-ground action, from helping wildlife safely cross roads to identifying and protecting vital ecological linkages.

In addition to this technical guidance, the Center provides policy advice and expertise. We work with decisionmakers and stakeholders to collaboratively develop, advance, and implement policies that protect wildlife movement, reconnect habitat, and support conservation at the landscape scale.

Creating Safe Passage for Desert Tortoises

Desert Tortoises need to move—and often cross roads—to find food, to reach water, and for other activities essential for survival. Unfortunately, this threatened species is being struck and killed by the thousands each year by motorists in the southwestern US, and their population numbers continue to decline. The Center is working with the US Fish and Wildlife Service and other public and private partners to minimize tortoise deaths along roadways. The initiative aims to establish standard policies and practices that can be implemented consistently across the Desert Tortoise’s four-state range, with the goal of providing safe passage for these animals across roads. Learn more

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Resources for Reducing Wildlife-Vehicle Collisions and Enhancing Habitat Connectivity

The recently passed Bipartisan Infrastructure Law includes multiple provisions related to conserving fish and wildlife, including the new $350-million Wildlife Crossings Pilot Program. Additionally, habitat connectivity projects are now eligible for funding from more than a dozen other transportation programs under the Bipartisan Infrastructure Law. To assist eligible applicants in understanding these new funding and policy opportunities, the Center has created and jointly developed a number of resources, including toolkits, guides, and webinars. Learn more

Wildlife overpass crossing

Promoting Citizen Science Through a Smartphone App

New technology has created an opportunity for the public to collect data that will help make roads safer for wildlife and motorists. The Center partnered with Montana State University Western Transportation Institute (WTI) and ARC Solutions to make the ROaDS (Roadkill Observation and Data System) tool available to states, tribes, and nonprofit organizations through a smartphone app. Developed by WTI, US Fish and Wildlife Service, and the National Park Service, the app enables uniform data collection on roadkill and sightings of live animals on or near roads. By making this data-collection tool widely available, and providing technical assistance on its use, the Center is helping natural resource managers and transportation planners better understand wildlife movement patterns to help reduce wildlife-vehicle collisions. Learn more

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Blackfeet Animal-Vehicle Collision Reduction Master Plan

The first-ever reservation-wide animal-vehicle collision study in the US has been finalized by the Center and the Blackfeet Nation Fish and Wildlife Department. The completed Animal-Vehicle Collision Reduction Master Plan provides the Blackfeet Nation with a blueprint to reduce wildlife and livestock collisions within the reservation through mitigation projects proposed in the plan. Learn more


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