Interstate 15 in western Riverside and U.S. 101 in Los Angeles and Ventura Counties cut through large areas of wildlife habitat which seclude species populations. The few who do cross are in danger of traffic collisions. One of the species who are most affected by this are the Santa Ana Mountain Lion population in the Riverside and Temecula area. The Mountain Lions are essentially on a habitat island which promotes inbreeding and the promotion of deleterious genes that can lead to a decline in their population. If assisted the Mountain Lions will be able to breed more successfully and escape possible endangerment.

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As a team of engineers, ecologists, and other professionals, we are working together to develop 3 different proposals to reduce the Mountain Lion deaths and promote healthy reproduction by exposure to new land. The team is working on plans and specifications for an overpass, underpass, and culvert to create a passageway for Mountain Lions to safely cross the I-15.

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A Wildlife Crossing System would facilitate two-way migration, the increase of gene flow, and genetic diversity in Mountain Lions.