Santa Cruz-Chaco Transmission Line Project, Bolivia October 10, 2016 | Latin America Project Update The 500 kV Santa Cruz-Chaco line project would connect substations Las Brechas and Yaguacua, and stretch about 430 km across the departments of Santa Cruz, Chuquisaca and Tarija. This content is available to only paying subscribers. Username or E-mail Password Remember Me Forgot Password