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US State DOT Wildlife Crossing Structures: Home


This LibGuide was created in response to a request for information and resources used by state DOTs for the design of wildlife mitigation structures. It has since grown through the contribution of many transportation librarians, researchers and others throughout the US and Canada.  Support for the LibGuide platform comes through the National Transportation Library. This is part of an ongoing project of the Western Transportation Knowledge Network to provide a series of resource guides covering topics of interest to the transportation community, particularly in the Western US states.

Most links in this guide open to full-text, or to an introductory page that allows the user to down-load the full-text PDF.  In some cases, the links go to the abstract of a fee-based article, in which case researchers, students and instructors should contact the library to see if access can be obtained through inter-library loan.

If you have any suggestions for this guide, or have resources that you would like to have added, please contact Laura Wilt at . 

US Government, TRB and AASHTO Guides and Manuals

Wildlife Crossings and Structures

Wildlife Overpass

Roads and highways encroach on wildlife habitats, increasing the risk of vehicle/wildlife interactions and posing a danger, not only to the wildlife, but often to drivers as well.  Transportation agencies continue to address this problem, working to provide safe passage for animals - from turtles to grizzly bear - and provide protection for the travelling public.  This guide identifies many of the studies and guidelines currently in use.

Guide Author

Laura Wilt, MLIS

Librarian, Oregon Dept. of Transportation

About WTKN

This guide is a product of the the Western Transportation Knowledge Network (WTKN), a diverse group of transportation organizations from AASHTO Region 4 focused on improving the access to transportation information, data and research to help the entire community. Membership includes libraries representing state Departments of Transportation (DOTs), academic institutions, transit agencies, metropolitan planning organizations (MPOs) and private industry.  Learn more about us.

Partnering organizations: