Within Caltrans District 9, the highest frequency of Wildlife Vehicle Collisions (WVC) are documented on Highway 395 and Highway 203 in Mono County between the Community of Crowley Lake and the Town of Mammoth Lakes (TOML). Collisions with large mammals, mainly mule deer, come with risk of property damage or even injury to drivers. Furthermore, WVCs can negatively impact deer populations, which are important to the economy, culture, and biology of the region. This project proposes to construct a wildlife crossing corridor consisting of overcrossings, undercrossings, and an exclusion fence to reduce WVCs. There are 5 project alternatives consisting of different WVC reduction treatments along the corridor.
November 2022 Wildlife Crossing Update:
In November of 2022, California’s Wildlife Conservation Board (WCB) approved a $3.17 million grant for the Mammoth Lakes 395 Wildlife Crossing Project to fund Caltrans’ PA&ED (Project Approval and Environmental Document) phase of the project. This includes the completion of an environmental document and a Project Report. Once PA&ED is complete, there is still the PS&E (Plans, Specifications, and Estimate) phase to complete that would finalize all the design, obtain permits and agreements, secure any needed Right of Way to acquire, and prepare a package for a contractor to bid on to construct the project.
The PA&ED phase kicks off in March of 2023.