More than 25 amphibians and reptiles are listed as threatened or endangered in California.  Highways pose movement barriers for many these species. As California’s human population increases and climate changes additional stress will be placed on existing populations. Reptiles and amphibians will need to cross highway corridors to maintain their populations as their ranges shift. This preliminary investigation would provide needed information on the interaction between sensitive reptiles and amphibians and highways, identify possible best practices for implementation, and identify what additional information needs to be developed to insure compliance with law and policy while expanding the highway system.