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Interstate 280 Wildlife Connectivity Research Project

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Project Date: 
Monday, August 29, 2011 to Saturday, April 1, 2017
Project Status: 

Interstate 280 is a busy highway on the San Francisco Peninsula. It is also adjacent to wild open spaces for about 20 miles. This means that the native wildlife that live in these wild areas sometimes attempt to cross the highway. When they cross the surface, they usually get hit by a car. This project provides access to wildlife cameras placed at under-crossings that might provide wildlife with a safe way to cross the highway, underneath.

Participating Organizations and/or Sponsors

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This represents the Final Report for the project. It contains the basic findings from the 2-year study, and is an updated version of the draft report (7/2013). The report includes the results from the deer movement study, the wildlife-vehicle collision study (unsuccessful crossing of freeway), and the wildlife-camera study (safe passages under freeway). It also includes recommendations for reducing wildlife-vehicle collisions and improving driver safety on I-280.

Geospatial Data

Google Earth file of project locations for the Interstate 280 project.


Project Map

Observation Summary

This is a summary of animal observation across all locations and positions.

Animal Image Count Animal Count
1 Eastern Fox Squirrel 1 1
2 Black-Tailed Jackrabbit 1 1
3 Eastern Gray Squirrel 2 2
4 Blue Jay 2 2
5 Gray Fox 3 3
6 Striped Skunk 4 4
7 Bobcat 12 12
8 Virginia Opossum 32 34
9 Coyote 133 139
10 Raccoon 153 231
11 Mule (or Black tailed) Deer 1,116 1,442