Location: Yosemite National Park
Client: National Park Service

Yosemite National Park has identified a need for extensive repairs to Tioga Road (Highway 120), which in the summer serves as a major travel corridor through Yosemite National Park and across the crest of the Sierra Nevada. The Tioga Road Rehabilitation Project is intended to address various rehabilitation needs, including road surface and culvert and drainage system improvements, along a 27‐mile stretch of the road from Crane Flat to the May Lake junction west of Olmstead Point and Tenaya Lake. Under contract to the National Park Service Denver Service Center, TEC is completing the Tioga Road Rehabilitation EA for Yosemite National Park, as required by NEPA, which will guide the resurfacing and improvement of the road and its associated drainage features and will consider various alternatives along the route. The Tioga Road corridor traverses riparian and wetland areas and may also contain archeological sites and other historic features such as stonework or culverts. TEC is completing wetland delineations along 27 miles of the route and cultural resource field surveys along the entire 47 miles of the route. The EA and associated wetland, Wild and Scenic River, and cultural resource studies will evaluate and disclose the potential impacts of the project to these and other park resources. The EA will provide comprehensive mitigation measures to minimize any impacts to the physical, biological, cultural, and social environment.